Patient support

Abstract
This disclosure describes a mattress having a plurality of vertically-oriented inflatable bladders and a pneumatic box located inside the mattress. In one embodiment, the patient support includes a plurality of pressure sensors positioned underneath the bladders. In still another embodiment, the patient support includes one or more filler portions that are selectable so that the patient support may conform to bed frames having different deck configurations.
Description
BACKGROUND OF THE DISCLOSURE

The present disclosure relates to a device for supporting a patient, such as a mattress. In particular, the present disclosure relates to patient supports appropriate for use in hospitals, acute care facilities, and other patient care environments. Certain embodiments disclosed herein relate to pressure relief support surfaces, or patient support surfaces that are configured to accommodate and operate with a variety of sizes and styles of beds, bed frames, and patient types.


SUMMARY OF THE DISCLOSURE

In one illustrated embodiment of the present invention, a patient support is provided that has a cover defining an interior region. A base is positioned in the interior region. Inflatable bladders extend upwardly from the base along a vertical axis. The vertical axis is substantially perpendicular to the base.


Pressure sensors may be positioned underneath the base. The pressure sensors may be arranged so that each sensor is aligned with at least one of the vertical bladders. The pressure sensors may be enclosed within an enclosure. The enclosure may be located in the interior region of the cover.


The pressure sensors may include one or more light transmitters or conductors or optical fibers. The pressure sensors may operate to measure pressure applied to one or more of the bladders. One or more of the pressure sensors may evaluate changes in intensity of light energy diffused within the sensor.


One or more pressure transducers may be coupled to the inflatable bladders. The pressure transducers may operate to measure internal pressure of fluid within the bladders.


A support layer may be positioned above the inflatable bladders. The support layer may have at least one support characteristic that is different from a support characteristic of the inflatable bladders. The support layer may include a breathable or air-permeable material. The support layer may include resilient portions. The support layer may include projections and depressions. The support layer may be enclosed within an enclosure. The enclosure may be located in the interior region of the cover.


The inflatable bladders may be substantially can-shaped or cylindrical. One or more of the inflatable bladders may include a beveled portion located between a top portion and a vertical portion of the bladder.


The patient support may include one or more removable filler portions. The filler portions may be selected to conform the patient support to bed frames having one or more deck configurations, including flat deck and step or recessed deck configurations.





BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present invention are more particularly described below with reference to the following figures, which illustrate exemplary embodiments of the present invention:



FIG. 1 is a perspective view of a patient support positioned on an exemplary hospital bed, with a portion of the patient support being cut away to show interior components of the patient support;



FIG. 2 is a perspective view of a patient support, with a portion being cut away to show interior components of the patient support;



FIG. 3 is an exploded view of components of the illustrated embodiment of a patient support;



FIG. 4 is a schematic view of an exemplary three-dimensional support material;



FIG. 5 is a side view of selected components of the illustrated embodiment of a patient support;



FIG. 6 is a top view of components of a patient support also shown in FIG. 5;



FIG. 7 is a perspective view of a first bladder assembly for a patient support;



FIG. 8 is a side view of the bladder assembly of FIG. 7;



FIG. 9 is a top schematic view of the bladder assembly of FIG. 7;



FIG. 10 is a close-up schematic view of Area A of FIG. 9;



FIG. 11 is a close-up schematic view of Area B of FIG. 9;



FIG. 12A is a top view of a portion of a bladder assembly including a vertical bladder and an inlet tube;



FIG. 12B is a cross-sectional view taken along line B-B of FIG. 12A;



FIG. 12C is a cross-sectional view taken along line C-C of FIG. 9;



FIG. 13 is a cross-sectional view of a portion of a base and vertical bladder;



FIG. 14 is a perspective view of a second bladder assembly for a patient support;



FIG. 15 is a top schematic view of the bladder assembly of FIG. 14;



FIG. 16 is a perspective view of a third bladder assembly for a patient support;



FIG. 17 is another perspective view of the bladder assembly of FIG. 16;



FIG. 18 is a side view of the bladder assembly of FIG. 16;



FIG. 19 is a top schematic view of the bladder assembly of FIG. 16;



FIG. 20 is a top view of exemplary sensor pads;



FIG. 21 is a perspective view of an exemplary sensor pad showing interior components thereof;



FIG. 22 is a perspective view of an exemplary bolster assembly;



FIG. 23 is a schematic view of air zones of the illustrated patient support and associated air supply system;



FIGS. 24A and 24B are schematic diagrams of portions of a control system for the illustrated patient support;



FIG. 25 is an exploded view of an exemplary pneumatic assembly; and



FIG. 26 is a perspective view of the pneumatic assembly of FIG. 25.





DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS


FIG. 1 shows an embodiment of a patient support or mattress 10 in accordance with the present invention. Patient support 10 is positioned on an exemplary bed 2. Bed 2, as illustrated, is a hospital bed including a frame 4, a headboard 36, a footboard 38, and a plurality of siderails 40.


Frame 4 of the exemplary bed 2 generally includes a deck 6 supported by a base 8. Deck 6 includes one or more deck sections (not shown), some or all of which may be articulating sections, i.e., pivotable with respect to base 8. In general, patient support 10 is configured to be supported by deck 6.


Patient support 10 has an associated control unit 42, which controls inflation and deflation of certain internal components of patient support 10, among other things. Control unit 42 includes a user interface 44, which enables caregivers, service technicians, and/or service providers to configure patient support 10 according to the needs of a particular patient. For example, support characteristics of patient support 10 may be adjusted according to the size, weight, position, or activity level of the patient. User interface 44 is password-protected or otherwise designed to prevent access by unauthorized persons.


User interface 44 also enables patient support 10 to be adapted to different bed configurations. For example, deck 6 may be a flat deck or a step or recessed deck. A caregiver may select the appropriate deck configuration via user interface 44. Inflation or deflation of specific mattress components may occur in response to user selection of a hospital bed frame or deck configuration.


Referring now to FIG. 2, patient support 10 has a head end 32 generally configured to support a patient's head and/or upper body region, and a foot end 34 generally configured to support a patient's feet and/or lower body region. Patient support 10 includes a cover 12 which defines an interior region 14. In the illustrated embodiment, interior region 14 includes a first layer 20, a second layer 50, and a third layer 52. However, it will be understood by those skilled in the art that other embodiments of the present invention may not include all three of these layers, or may include additional layers, without departing from the scope of the present invention.


In the illustrated embodiment, first layer 20 includes a support material, second layer 50 includes a plurality of vertically-oriented inflatable bladders located underneath the first layer 20, and third layer 52 includes a plurality of pressure sensors located underneath the vertical bladders of second layer 50, as more particularly described below.


Also located within interior region 14 are a plurality of bolsters 54, one or more filler portions 56, and a pneumatic valve control box 58. A fire-resistant material (not shown) may also be included in the interior region 14.


Patient support 10 may be coupled to deck 6 by one or more couplers 46. Illustratively, couplers 46 are conventional woven or knit or fabric straps including a D-ring or hook and loop assembly or Velcro®-brand strip or similar fastener. It will be understood by those skilled in the art that other suitable couplers, such as buttons, snaps, or tethers may also be used equally as well.


Components of one embodiment of a patient support in accordance with the present invention are shown in exploded view in FIG. 3. This embodiment of patient support 10 includes a top cover portion 16 and a bottom cover portion 18. Top cover portion 16 and bottom cover portion 18 couple together by conventional means (such as zipper, Velcro® strips, snaps, buttons, or other suitable fastener) to form cover 12, which defines interior region 14. While a plurality of layers and/or components are illustrated within interior region 14, it will be understood by those of skill in the art that the present invention does not necessarily require all of the illustrated components to be present.


A first support layer 20 is located below top cover portion 16 in interior region 14. First support layer 20 includes one or more materials, structures, or fabrics suitable for supporting a patient, such as foam, inflatable bladders, or three-dimensional material. Suitable three-dimensional materials include Spacenet, Tytex, and/or similar materials. One embodiment of a suitable three dimensional material for support layer 20 is shown in FIG. 4, described below.


Returning to FIG. 3, a second support layer 50 including one or more inflatable bladder assemblies, is located underneath the first support layer 20. The illustrated embodiment of the second support layer 50 includes first, second and third bladder assemblies, namely, a head section bladder assembly 60, a seat section bladder assembly 62, and a foot section bladder assembly 64. However, it will be understood by those skilled in the art that other embodiments include only one bladder assembly extending from head end 32 to foot end 34, or other arrangements of multiple bladder assemblies, for example, including an additional thigh section bladder assembly. The illustrated bladder assemblies 60, 62, 64 and their components are described below with reference to FIGS. 5-19. In general, bladder assemblies disclosed herein are formed from a lightweight, flexible air-impermeable material such as a polymeric material like polyurethane, urethane-coated fabric, vinyl, or rubber.


A pressure-sensing layer 69 illustratively including first and second sensor pads, namely a head sensor pad 68 and a seat sensor pad 70, is positioned underneath bladder assemblies 60, 62, 64. Head sensor pad 68 is generally aligned underneath head section bladder assembly 60, and seat sensor pad 70 is generally aligned underneath seat section bladder assembly 62, as shown. Head filler 66 may be positioned adjacent head sensor pad 68 near head end 32 so as to properly position head sensor pad 68 underneath the region of patient support 10 most likely to support the head or upper body section of the patient. In other embodiments, a single sensor pad or additional sensor pads, for example, located underneath foot section bladder assembly 64, and/or different alignments of the sensor pads, are provided. Sensor pads 68, 70 are described below with reference to FIGS. 20-21.


In the illustrated embodiment, a turn-assist cushion or turning bladder or rotational bladder 74 is located below sensor pads 68, 70. The exemplary turn-assist cushion 74 shown in FIG. 3 includes a pair of inflatable bladders 74a, 74b. Another suitable rotational bladder 74 is a bellows-shaped bladder. Another suitable turn-assist cushion is disclosed in, for example, U.S. Pat. No. 6,499,167 to Ellis, et al., which patent is owned by the assignee of the present invention and incorporated herein by this reference. Turn-assist cushions 74 are not necessarily a required element of the present invention.


A plurality of other support components 66, 72, 76, 78, 80, 84, 86, 90 are also provided in the embodiment of FIG. 3. One or more of these support components are provided to enable patient support 10 to be used in connection with a variety of different bed frames, in particular, a variety of bed frames having different deck configurations. One or more of these support components may be selectively inflated or deflated or added to or removed from patient support 10 in order to conform patient support 10 to a particular deck configuration, such as a step or recessed deck or a flat deck.


The support components illustrated in FIG. 3 are made of foam, inflatable bladders, three-dimensional material, other suitable support material, or a combination of these. For example, as illustrated, head filler 66 includes a plurality of foam ribs extending transversely across patient support 10. Head filler 66 could also be an inflatable bladder. Filler portion 72 includes a foam layer positioned substantially underneath the sensor pads 68, 70 and extending transversely across the patient support 10. In the illustrated embodiment, filler portion 72 includes a very firm foam, such as polyethylene closed-cell foam, with a ½-inch thickness.


Head bolster assembly 76, seat bolster assembly 78, and foot section bolster assembly 86 each include longitudinally-oriented inflatable bladders spaced apart by coupler plates 144. Bolster assemblies 76, 78, 86 are described below with reference to FIG. 22.


As illustrated, first foot filler portion 80 includes a plurality of inflatable bladders extending transversely across patient support 10, and second foot filler portion 84 includes a foam member, illustratively with portions cut out to allow for retractability of the foot section or for other reasons. Deck filler portion 90 includes a plurality of transversely-extending inflatable bladders. As illustrated, deck filler portion 90 includes two bladder sections located beneath the head and seat sections of the mattress, respectively, and is located outside of cover 12. Deck filler portion 90 may include one or more bladder regions, or may be located within interior region 14, without departing from the scope of the present invention.


Also provided in the illustrated embodiment are a pneumatic valve box 58 and an air supply tube assembly 82. Receptacle 88 is sized to house pneumatic valve box 58. In the illustrated embodiment, receptacle 88 is coupled to bottom cover portion 18 by Velcro® strips. Pneumatic box 58 and tube assembly 82 are described below with reference to FIG. 6, FIG. 23, and FIGS. 25-26.


In the illustrated embodiment, support layer 20 includes a breathable or air permeable material which provides cushioning or support for a patient positioned thereon and allows for circulation of air underneath a patient. The circulated air may be at ambient temperature, or may be cooled or warmed in order to achieve desired therapeutic effects.


Also in the illustrated embodiment, support layer 20 includes or is enclosed in a low friction air permeable material (such as spandex, nylon, or similar material) enclosure that allows support layer 20 to move with movement of a patient on patient support 10, in order to reduce shear forces, for instance. In other embodiments, the enclosure is made of a non-air permeable, moisture/vapor permeable material such as Teflon or urethane-coated fabric.


In FIG. 4, an exemplary three-dimensional material suitable for use in support layer 20 is depicted. This illustrated embodiment of support layer 20 includes a plurality of alternating first and second layers 27, 29. Each layer 27, 29 includes first and second sublayers 28, 30. As shown, the sublayers 28, 30 are positioned back-to-back and each sublayer 28, 30 includes a plurality of peaks or semicircular, cone, or dome-shaped projections 22 and troughs or depressions 24. A separator material 26 is provided between the first and second sublayers 28, 30. In other embodiments, separator material 26 may instead or in addition be provided between the layers 27, 29, or not at all.


Any number of layers and sublayers may be provided as may be desirable in a particular embodiment of support layer 20. Certain embodiments include 4 layers and other embodiments include 8 layers. In general, 0-20 layers of three dimensional material are included in support layer 20.


Suitable three-dimensional materials for use in support layer 20 include a polyester weave such as Spacenet, manufactured by Freudenberg & Co. of Weinheim, Germany, Tytex, available from Tytex, Inc. of Rhode Island, U.S.A., and other woven, nonwoven, or knit breathable support materials or fabrics having resilient portions, microfilaments, monofilaments, or thermoplastic fibers. Other embodiments of support layers and suitable three dimensional materials are described in U.S. patent application Ser. No. 11/119,980, entitled PRESSURE RELIEF SUPPORT SURFACE.


An exemplary second support layer including a base 96 and a plurality of inflatable bladders 50 is shown in the side view of FIG. 5. Inflatable bladders 50 extend upwardly away from base 96 along a vertical axis 101. Inflatable bladders 50 are arranged into a plurality of bladder zones, namely head bladder zone 60, seat bladder zone 62, and foot bladder zone 64. First and second foot filler portions 80, 84 and tube assembly 82 are located in the foot end 34 of patient support 10 below foot bladder assembly 64. Pneumatic valve box 58 is also located in foot end 34 of patient support 10 underneath foot bladder zone 64. In other embodiments, pneumatic box 58 may be located elsewhere in patient support 10 or outside patient support 10.


In FIG. 6, a top view of the above-described embodiment of patient support 10 is provided, with cover 12, support layer 20, and foot bladder assembly 64 removed to show the arrangement of delivery tube 92, air distributor 94, and pneumatic box 58 in the foot section 34. Pneumatic box 58 includes valves, circuitry, and other components for connecting vertical bladders 50 to an air supply 152 (FIG. 23) for inflation and deflation of vertical bladders 50. Pneumatic box 58 is described below with reference to FIGS. 25 and 26.


Delivery tube 92 is connected to an air supply and provides air to air distributor 94. In the illustrated embodiment, delivery tube extends transversely and/or diagonally across the width of patient support 10 and may be curved or angled toward seat section bladder zone 62. Tube 92 and distributor 94 are made of a lightweight air impermeable material such as plastic.


Air distributor 94 is coupled to an end of delivery tube 92 located near seat section bladder zone 62. Air distributor 94 is an elongated hollow member including one or more apertures 93 which allow air to exit the tube 92 and circulate among vertical bladders 50 and three-dimensional material 20. In certain embodiments, the air is directed upwardly through support layer 20. A vent (not shown) is provided in cover 12 to allow the circulated air to exit interior region 14. The vent is generally located on the opposite end of patient support 10 from the supply tube 92. An additional vent may be provided in the three-dimensional material enclosure, in embodiments where three-dimensional material 20 is enclosed in an enclosure within interior region 14 as discussed above. In those embodiments, the vent is also generally be located opposite the supply tube 92.


In the illustrated embodiment, air provided by delivery tube 92 does not bleed upwardly through cover 12, however, in other embodiments cover 12 may include a breathable or air permeable material allowing for air to flow upwardly through the cover 12 to the patient. Also, in other embodiments, a single supply tube is provided in place of delivery tube 92 and air distributor 94. While shown in the illustrated embodiment, the above-described air circulating feature is not necessarily a required component of the present invention.


Exemplary vertical bladder assemblies are shown in the perspective views of FIGS. 7, 14, 16, and 17. FIG. 7 illustrates a head section bladder assembly 60. Head section bladder assembly 60 includes a base or substrate 96 and a plurality of vertically-oriented inflatable bladders 50 extending upwardly from the base 96 along an axis 101 which is substantially perpendicular to base 96.


Head section bladder assembly 60 has a head end 32, a foot end 34, a first side 33 and a second side 35. Vertical bladders 50 are arranged in longitudinally-extending columns from head end 32 to foot end 34, and in transversely extending rows from first side 33 to second side 35.


Each bladder 50 is coupled to base 96 by a coupling 104. In the illustrated embodiment, radio frequency (RF) welding is used to couple bladders 50 to base 96. In other embodiments, other conventional coupling means, such as adhesives or sealants, may be used.


Base 96 includes an upper base portion or substrate 97 and a lower base portion or substrate 95 as best shown in FIGS. 12B, 12C and 13. Air channels 212 (best shown in FIG. 12B) are formed between upper base portion 97 and lower base portion 95 and provide air to bladders 50 from an air supply (FIG. 24B). Air release channels 206 are coupled to air channels 212 as shown in FIG. 12B.


Elbow ports 110 and fittings 114 are coupled to air release channels 206 and to relief valves 112 as shown in FIG. 16. One suitable fitting 114 is a ½ inch by ⅜ inch barbed connector, model no. C8-6WN made of nylon, available from Eldon James Corp. of Loveland, Colo.


Pressure relief valves 112 release air to the atmosphere, for example, if the internal air pressure within the bladders 50 exceeds a maximum value. One suitable relief valve 112 is a 2.0 psi pressure relief valve model no. 730ROA available from Halkey-Roberts of St. Petersburg, Fla. In the illustrated embodiment, relief valves 112 are inserted into tubing such as ½ inch clear PVC tubing.


Returning now to FIGS. 7 and 9, upper base portion 97 is coupled to lower base portion 95 by welds 104, forming a plenum. Fasteners, 106, 108, 109 are generally spaced apart along the outer edges of base 96. Fasteners 106, 108, 109 secure the bladder assembly 60 within interior region 14, i.e. by coupling bladder assembly 60 to another bladder assembly, or to an inner portion of cover 12, or to stiffener plates 144, or to another component within interior region 14. As shown, fasteners 106 couple the bladder assembly 60 to the sensor pad 68, fasteners 108 couple bladder assembly 60 to support plate 144, and fasteners 109 couple bladder assembly 60 to bladder assembly 62. Fasteners 106, 108, 109 are, in the illustrated embodiment, plastic or metal buttons and snaps. However, other suitable fasteners, such as rivets, may also be used.


Elbow ports 110 are spaced apart and located along the edges of first and second sides 33, 35 of bladder assembly 60. In the illustrated embodiment, ⅜-inch ports 110 are provided on each side of bladder assembly 60 and at least one port is provided for each of head section assembly 60, seat section assembly 62, and foot section assembly 64.


Semi-circular regions 103 facilitate coupling of head section bladder assembly 60 with another bladder assembly, among other things. For instance, semi-circular regions 103 are sized to mate with vertical bladder portions of another bladder assembly, such as seat section bladder assembly 62.



FIG. 8 is a side view of bladders 50 of head section bladder assembly 60. Bladders 50 each have a vertical portion 100, a top portion 98, and an angled or beveled portion 102 located in between the top portion 98 and the vertical portion 100. Each bladder 50 is coupled to base 96. Bladders 50 have a vertical height 116. In certain embodiments, vertical height 116 of bladders in the head section bladder assembly 60 is about 4 to about 6 inches. In one embodiment, vertical height 116 is about 4.9 inches and the height including plenum 95, 97 is about 6 inches.



FIG. 9 shows the pattern of couplings 104 (i.e., RF welds) used in the head section bladder assembly 60 of the illustrated embodiment of the present invention. Radio frequency welds 104 are provided around the circumference of each bladder 50, intermittently between the bladders 50 on the base 96, and along the outer edges of the bladder assembly. Welds 194 around the circumference of each bladder 50 couple coupling portion 99 of bladder 50 to upper base portion 97 as best shown in FIGS. 10, 11, 12B and 12C. Welds 196, 198 couple upper base portion 97 to lower base portion 95 as best shown in FIGS. 10, 11, and 12B. Dielectric welds 105 are used to join elbow ports 110 to upper base portion 95 as best shown in FIGS. 11 and 12B.



FIG. 10 is a close-up view of Area A of FIG. 9, showing outer edge welds 192, bladder welds 194, first circular welds 196, and second circular welds 198. In the illustrated embodiment, the welds 198 have an outer diameter 197 of about 4 inches and a thickness of about 0.125 inches; welds 196, 198 have an outer diameter of about 0.75 inches and a thickness of about 0.125 inches; and welds 192 have a thickness of about 0.125 inches. Other suitable weld configurations may be used without departing from the scope of the present invention. In some cases, circular welds 196, 198 may encircle fasteners 106, 108.



FIG. 11 additionally shows a weld 200 encircling an elbow port 110, which, as mentioned above, is done by dielectric welding.



FIG. 12A illustrates a portion of bladder assembly 60 including a weld 196, a bladder 50, and an elbow port 110. As discussed above, bladder 50 includes a top portion 98 and a beveled portion 102. Bladder 50 is substantially cone- or can-shaped or cylindrical in shape. However, in other embodiments, bladder 50 is square or cube-shaped, rectangular, hexagonal, octagonal, or any other suitable shape as will be understood by those of ordinary skill in the art. Welds 196, 194, and 200 are generally circular in shape. In the case of bladder weld 194, weld 194 is positioned along the circumference of bladder 50. In the case of weld 200, weld 200 is positioned along the circumference of elbow port 110.



FIG. 12B shows a cross sectional view of FIG. 12A taken along line 12B-12B. As shown in FIG. 12B, an air channel 212 supplies air from an air supply (not shown) to interior region 204 of bladder 50. Some of the air provided by air channel 212 resides in release channel 206. If the pressure in interior region 204, 206, 212 exceeds a maximum value, a pressure relief valve 112 coupled to channel 206 will release air to the atmosphere.


Air channel 212 is formed between upper base portion 97 and lower base portion 95, which are coupled together at welds 196. Upper base portion 97 includes a plurality of cut-out regions or holes (not shown) into which material forming bladders 50 is inserted. Each bladder 50 has an end portion 99 that is positioned between upper base portion 97 and lower base portion 95 as shown in FIGS. 12C and 13. End portion 99 is secured to upper base portion 97 by coupling or weld 194. Similarly, release channel 206 includes an end portion 111 which is secured to upper base portion 97 by coupling or weld 200.


In the illustrated embodiment, bladder 50 is thermoformed and only welded where end portion 99 meets upper base portion 97. In other embodiments, bladder 50 may be hand-crafted; i.e., top portion 98 is welded to vertical portion 100 and vertical portion 100 also includes a welded seam.


Another cross-section of a portion of a bladder assembly 60 is shown in FIG. 13. FIG. 13 depicts an exemplary fastener 106, 108 suitable for coupling upper base portion 97 to lower base portion 95, and or for coupling base 96 to another surface (such as bottom surface of cover 12) within interior region 14. In the illustrated embodiment, each fastener 106, 108 includes a first fastener portion or stud 208 and a second fastener portion or post 210. In other embodiments, first fastener portion 208 is a button and second fastener portion 210 is a socket. In any case, first and second fastener portions 208, 210 are configured to mate with one another thereby coupling the intervening materials together.



FIG. 13 also illustrates air channel 212 located between upper and lower base portions 97, 95, vertical bladder wall 100 extending upwardly away from base 96, bladder top portion 98, and crown or bevel portion 102 located between top portion 98 and wall portion 100, defining an interior bladder region 204. In the illustrated embodiment, the diameter of each vertical bladder 100 is about 3.5″. A smaller or larger diameter may be used in other embodiments.



FIGS. 14 and 15 depict an exemplary seat section bladder assembly 62. Seat section bladder assembly is generally configured to support a patient's seat, thighs, or midsection. The components of seat section bladder assembly 62 are substantially as described above with reference to head section bladder assembly 60. Bladders 50 of seat section bladder assembly 62 have a vertical height 116. In the illustrated embodiment, vertical height 116 is the same or about the same as vertical height 116 of the bladders in head section assembly 60.



FIGS. 16-19 depict an exemplary foot section bladder assembly 64. Foot section bladder assembly 64 is generally configured to support a patient's legs and/or feet. The components of foot section bladder assembly 64 are substantially as described above with reference to head section bladder assembly 60. Bladders 50 of foot section bladder assembly have a vertical height 118 as shown in FIG. 18. In the illustrated embodiment, vertical height 118 is shorter or smaller than vertical height 116. In certain embodiments, vertical height 118 is about 2 to about 5 inches. In one embodiment, vertical height is about 3.5 inches and the height including plenum 95, 97 is about 4 inches.


As shown in FIG. 19, the illustrated embodiment of foot section bladder assembly 64 is wider than head and seat section bladder assemblies 60, 62. In this embodiment, foot section bladder assembly 64 includes longitudinal sections 214, 216, which may function as bolsters for the foot section. Longitudinal sections 214, 216 are separately inflatable from the remainder of the foot section 64, in the illustrated embodiment.


In the illustrated embodiment, patient support 10 includes a pressure sensing member 67 located underneath the bladder assemblies 60, 62, 64. As shown in FIG. 20, pressure sensing member 67 includes a first or head section sensor pad 68 and a second or seat section sensor pad 70. Further, each sensor pad 68, 70 includes first and second sensor pad portions 124, 126. Each sensor pad portion 124, 126 includes a plurality of pressure sensors 136 located on a substrate 220. Sensors 136 are designed to respond when pressure is applied to the top surface of patient support 10, i.e. by a patient. Sensors 136 are spaced apart and arranged on substrate 220 so that they are positioned adjacent or underneath or aligned with one or more vertical bladders 50. In the illustrated embodiment, a sensor 136 is positioned underneath the center or middle portion of each vertical bladder 50. Substrate 220 is made of a substantially rigid material such as plastic. An additional interface layer may be provided between base 96 and substrate 220 to direct applied force to sensors 136, or for other reasons. Sensors 136 include a soft or flexible material such as foam and one or more light conductors or optical fibers (not shown) located within the foam. Sensors 136 and substrate 137 are enclosed within a cover 22 as shown in FIG. 21.


The sensors 136 in each sensor pad 68, 70 are coupled to a collector/transmitter 128, 130, which receives pressure data from sensors 136 and transmits the data to a circuit located in pneumatic box 58 by communication lines 132. A collector/transmitter 128, 130 is located at one end of each sensor pad portion 124, 126.


In the illustrated embodiment, the pressure data obtained by sensors 136 is indicative of an amount of pressure being applied (i.e., by a patient or portion thereof being supported by patient support 10) to one or more vertical bladders 50. The pressure sensing apparatus 67 and components and operation thereof are described in more detail in U.S. patent application Ser. No. 11/119,991, titled PATIENT SUPPORT HAVING REAL TIME PRESSURE CONTROL.



FIG. 22 depicts a bolster assembly 76, 78. Bolster assemblies 76, 78 are generally configured to support portions of a patient along the longitudinal edges of patient support 10. One or more bolster assemblies 76, 78 may be provided in order to conform patient support 10 to a particular bed frame configuration, to provide additional support along the edges of patient support 10, aid in ingress or egress of a patient from patient support 10, maintain a patient in the center region of patient support 10, or for other reasons. For example, internal air pressure of the bolster bladders may be higher than the internal bladder pressure of assembles 60, 62, 64, or may be increased or decreased in real time, to accomplish one of these or other objectives.


Each bolster assembly 76,78 includes a plurality of bolsters, namely, an upper bolster 140 and a lower bolster 142, with the upper bolster 140 being positioned above the lower bolster 142. Each upper and lower bolster combination 140, 142 is configured to be positioned along a longitudinal edge of patient support 10. Each upper and lower bolster combination 140, 142 is enclosed in a cover 138.


In the illustrated embodiment, the bolsters 140, 142 are inflatable bladders. In other embodiments, either or both bolsters 140, 142 may be constructed of foam, or filled with three-dimensional material, fluid, or other suitable support material. For example, in one embodiment, upper bolster 140 includes two layers of foam: a viscoelastic top layer and a non visco elastic bottom layer, while lower bolster 142 is an inflatable bladder. The bolsters 140, 142 may be inflated together, or separately, as shown in FIG. 23, described below.


Each bolster combination 140, 142 is coupled to one end of one or more support plates 144 which provide support for other components of patient support 10 including vertical bladders 50. Support plates 144 may be made of a substantially rigid or stiff yet lightweight material such as molded plastic. In other embodiments, plates 144 may be constructed of stainless steel or steel, if additional weight is desired, i.e. for addition, collapsibility for ease of storage of patient support 10, for instance. Support plates 144 may be provided in order to give support to patient support 10 particularly during transport, for ease of assembly, or for other reasons.


In the illustrated embodiment, each support plate 144 is a rectangular member extending transversely across the width of the mattress 10. As shown in the drawings, there are five such rib-like members 144 spaced apart underneath the head and seat sections of the mattress. In other embodiments, each support plate 144 has its middle section (i.e., the section extending transversely) cut out so that only the two plate ends remain at each spaced-apart end (underneath the bolsters); thereby providing five pairs of support plates 144 spaced apart along the longitudinal length of the mattress 10.


Bolster assembly 86 is similar to bolster assemblies 76, 78 except that its upper layer includes the vertical bladders 50 of longitudinal sections 214, 216. Bolster assembly 86 has a longitudinally-oriented bladder as its lower bolster portion.


A schematic diagram of the pneumatic control system of patient support 10 is shown in FIG. 23. Reading FIG. 23 from second to first, there is shown a simplified top view of patient support 10 with portions removed to better illustrate the various air zones 160, a simplified side view of patient support 10, a schematic representation of pneumatic valve box 58, a schematic representation of control unit 42, and air lines 146, 148, 150 linking control unit 42, valve box 58, and air zones 160.


As shown in FIG. 23, air zones 160 of patient support 10 are assigned as follows: zone 1 corresponds to head section bladder assembly 60, zone 2 corresponds to seat section bladder assembly 62, zone 3 corresponds to foot section bladder assembly 64, zone 4 corresponds to upper side bolsters 140, zone 5 corresponds to lower side bolsters 142, zone 6 corresponds to upper foot bolsters 140, zone 7 corresponds to lower foot bolsters 142, zone 8 corresponds to first turn-assist bladder 74, zone 9 corresponds to second turn-assist bladder 74, zone 10 corresponds to deck filler 90, and zone 11 corresponds to foot filler 80.


An air line 150 couples each zone 160 to a valve assembly 162 in valve box 58. Valve box 58 is located in the foot section 34 of patient support 10. Illustratively, valve box 58 is releasably coupled to bottom portion 18 of cover 12 in interior region 14, i.e., by one or more Vecro®-brand fasteners or other suitable coupler.


Each air line 150 is coupled at one end to an inlet port 135 on the corresponding bladder or bladder assembly. Each air line 150 is coupled at its other end to a valve assembly 162. Each valve assembly 162 includes first or fill valve 163 and a second or vent valve 165. First valves 163 are coupled to air supply 152 of control unit 42 by air lines 148. First valves 163 thereby operate to control inflation of the corresponding zone 160 i.e. to fill the zone with air. Second valves 165 operate to at least partially deflate or vent the corresponding zone 160, for example, if the internal air pressure of the zone 160 exceeds a predetermined maximum, or if deflation is necessary or desirable in other circumstances (such as a medical emergency, or for transport of patient support 10).


Each valve 163, 165 has an open mode 224 and a closed mode 226, and a switching mechanism 228 (such as a spring) that switches the value from one mode to another based on control signals from control unit 42. In closed mode 226, air flows from air supply 152 through the value 163 to the respective zone 160 to inflate the corresponding bladders, or in the case of vent valves 165, from the zone 160 to atmosphere. In open mode 228, no inflation or deflation occurs.


In the illustrated embodiment, an emergency vent valve 230 is provided to enable quick deflation of turning bladders 74 which draws air from atmosphere through a filter 164 and also vents air to atmosphere through filter 164. Air supply 152 is an air pump, compressor, blower, or other suitable air source.


Air supply 152 is coupled to a switch valve 155 by air line 146. Switch valve 166 operates to control whether inflation or deflation of a zone occurs. An optional proportional valve 171 may be coupled to air line 148 to facilitate smooth inflation or deflation of turn-assist bladders 74, or for other reasons.


In the illustrated embodiment, valve box 58 includes a first valve module 156 and a second valve module 158. First valve module 156 includes valves generally associated with a patient's first side (i.e., first side, from the perspective of a patient positioned on patient support 10) and second valve module 158 includes valves generally associated with a patient's second side (i.e., second side).


The various zones 160 are separately inflatable. Certain of the zones 160 are inflated or deflated to allow patient support 10 to conform to different bed frame configurations. For example, the deck filler 90 (zone 10 in FIG. 23) is inflated to conform patient support 10 to certain bed frame configurations, such as step deck configurations including the TotalCare® and CareAssist® bed frames, made by Hill-Rom, Inc., the assignee of the present invention, but is deflated when patient support 10 is used with a flat deck bed frame, such as the Advanta® bed made by Hill-Rom, Inc. As another example, the foot filler 80 (zone 11 in FIG. 23) is inflated when patient support 10 is used with the VersaCare®, TotalCare®, or CareAssist® beds, but the lower side bolsters 142 (zone 5 in FIG. 23) are not inflated when patient support 10 is used with a VersaCare® bed. As still another example, the lower foot bolsters 142 (zone 7 in FIG. 23) are inflated when patient support 10 is used on flat decks or other bed frames, including the Advanta® and VersaCare® bed frames made by Hill-Rom, Inc.



FIGS. 24A and 24B are a simplified schematic diagram of a control system and the patient support or mattress 10 of the present invention. FIG. 24A illustrates the patient support 10 including the various components of patient support 10 whereas FIG. 24B illustrates the control unit 42 and various components therein. The patient support 10 includes the sensor pad 52 which is coupled to the pneumatic valve control box 58 as previously described. The sensor pad 52 includes a head sensor pad 68 and a seat sensor pad 70. The head sensor pad 68 is located at the head end 32 of the mattress 10. The seat sensor pad 70 is located at a middle portion of the mattress 10 which is located between the head end 32 and a location of the pneumatic valve control box 58. The seat sensor pad 70 is located such that a patient laying upon the mattress 10 may have its middle portion or seat portion located thereon when in a reclined state. In addition, when the head end 32 of the mattress 10 is elevated, the seat portion of the patient is located upon the seat sensor pad 70. As previously described with respect to FIG. 3, the head sensor pad 68 is located beneath the head section bladder assembly 60 and the seat sensor pad 70 is located beneath the seat section bladder assembly 62. Each one of the sensors of the head sensor pad 68 or the seat sensor pad 70 is located beneath on at least adjacent to one of the upstanding cylindrical bladders or cushions 50. A head angle sensor 502 is coupled to the control box 58 where signals received from the sensor 52 may provide head angle information and pressure adjustment information for adjusting pressure in the seat bladders 62.


The sensor pad 52 is coupled through the associated cabling to the pneumatic control box 58. The pneumatic control box 58 includes a multiplexer 508 coupled to the head sensor pad 68 and the seat sensor pad 70 through a signal and control line 510. The multiplexer board 508 is also coupled to an air control board 512 which is in turn coupled to a first valve block 514 and a second valve block 516. A communication/power line 518 is coupled to the control unit 42 of FIG. 24B. Likewise, a ventilation supply line 520 which provides for air flow through the patient support 10 for cooling as well as removing moisture from the patient is also coupled to the control unit 42 of FIG. 24B. An air pressure/vacuum supply line 522 is coupled to the control unit 42 as well.


The control unit 42 of FIG. 24B, also illustrated in FIG. 1, includes the display 44, which displays user interface screens, and a user interface input device 524 for inputting to the control unit 42 user selectable information, such as the selection of various functions or features of the present device. The selections made on the user interface input device 524 control the operation of the patient support 10, which can include selectable pressure control of various bladders within the mattress 10, control of the deck 6, for instance to put the bed 2 in a head elevated position, as well as displaying the current state of the mattress or deck position, and other features.


An algorithm control board 526 is coupled to the user interface input device 524. The algorithm control board 526 receives user generated input signals received through the input device 524 upon the selection of such functions by the user. The input device 524 can include a variety of input devices, such as pressure activated push buttons, a touch screen, as well as voice activated or other device selectable inputs. The algorithm control board 526 upon receipt of the various control signals through the user input device 524 controls not only the operation of the mattress 10 but also a variety of other devices which are incorporated into the control unit 42. For instance, the algorithm control board 526 is coupled to a display board 528 which sends signals to the display 44 to which it is coupled. The display board 528 is also connected to a speaker 530 which generates audible signals which might indicate the selection of various features at the input device 24 or indicate a status of a patient positioned on patient support (e.g. exiting) or indicate a status of therapy being provided to the patient (e.g., rotational therapy complete). The algorithm control board 526 receives the required power from power supply 532 which includes an AC input module 534, typically coupled to a wall outlet within a hospital room.


The algorithm control board 526 is coupled to an air supply, which, in the illustrated embodiment includes a compressor 536 and a blower 538. Both the compressor 536 and the blower 538 receive control signals generated by the algorithm control board 526. The compressor 536 is used to inflate the air bladders. The blower 538 is used for air circulation which is provided through the ventilation supply line 520 to the mattress 10. It is, however, possible that the compressor 536 may be used to both inflate the bladders and to circulate the air within the mattress 10. A pressure/vacuum switch valve 540 is coupled to the compressor 536 which is switched to provide for the application of air pressure or a vacuum to the mattress 10. A muffler 541 is coupled to the valve 540. In the pressure position, air pressure is applied to the mattress 10 to inflate the mattress for support of the patient. In the vacuum position, the valve 540 is used to apply a vacuum to the bladders therein such that the mattress may be placed in a collapsed state for moving to another location or for providing a CPR function, for example. A CPR button 542 is coupled to the algorithm control board 526.


As illustrated, the algorithm control board 526, the compressor 536, the blower 538, and the user input device or user control module 524 are located externally to the mattress and are a part of the control unit 42, which may be located on the footboard 38 as shown in FIG. 1. The sensors and sensor pad 52, the pneumatic valve control box 58, and the air control board or microprocessor 512 for controlling the valves and the sensor pad system 52 are located within the mattress 10. It is within the present scope of the invention to locate some of these devices within different sections of the overall system, for instance, such that the algorithm control board 526 could be located within the mattress 10 or the air control board 512 could be located within the control unit 42.


As shown in FIGS. 25-26, control box 58 includes a multiplexer 252 and an air control board 250. Control board 250 is coupled to multiplexer 252 by a jumper 254. Multiplexer 252 is further coupled to head sensor pad 68 and seat sensor pad 70 through a signal and control line (not shown). Control board 250 is also coupled to first valve module 156 and second valve module 158 by wire leads 251. A communication/power line 258 couples control board 250 to the control unit 42. Communication line 258 couples to a communication plug 259 of control board 250. Jumper 254 couples multiplexer 252 to control board 250 for power and access to communication line 258. Wire leads 251 provide actuation power to first and second valve modules 156, 158.


An angle sensor cable 256 is provided to send a signal from a head angle sensor 502 to the control board 250. Angle sensor cable 256 couples to an angle plug 257 of control board 250. In the illustrated embodiment, head angle sensor 502 is located within head bolster assembly 76 as indicated by FIG. 24A. Head angle sensor 502 indicates the angle of elevation of the head end 32 of bed 2 as the head section of the frame 4 articulates upwardly raising the patient's head or downwardly lowering the patient's head. In one embodiment, angle sensor 502 transmits the angle of head end 32 to all nodes or circuit boards within the mattress control system 42, 58. Angle sensor 502 generates an indication or indicator signal when head end 32 is at an angle of at least 5°, at least 30°, and at least 45°. The head angle indication is transmitted to the control unit 42 which evaluates and processes the signal. When head end 32 is at an angle above 30° turn assist 74 becomes inoperative primarily for patient safety reasons. When head end 32 is at an angle above 45° information is transmitted to control unit 42 for use in the algorithms. The 5° angle indication is primarily to ensure relative flatness of patient support 10. In the illustrated embodiment, angle sensor 502 is a ball switch or string potentiometer.


As discussed above, first and second valve modules 156, 158 include fill valves 163 and vent valves 165. First valve module 156 includes fill valves 163a-f and vent valves 165a-f. Second valve module 156 includes fill valves 163g-l and vent valves 165g-l. Fill valves 163a-l and vent valves 165a-l are 12 Volt 7 Watt solenoid direct active poppet style valves in the illustrated embodiment. Control board 252 is able to actuate each fill valve 163a-l and vent valve 165a-l independently or simultaneously. Fill valves 163a-l and vent valves 165a-l are all able to be operated at the same time. In operation to initiate each valve 163, 165, control board 250 sends a signal to the valve to be operated. The signal causes a coil (not shown) within each valve to energize for ½ second and then switches to pulsate power (i.e., turn on and off at a high rate) to save power during activation. The activation in turn cause the valve to either open or close depending on which valve is initiated.


Fill valves 163 are coupled to air supply 152 of control unit 42 by second air line 148. Air line 148 includes an outer box line assembly 260 and an inner box line assembly 262. Outer box line assembly 260 includes an exterior inlet hose 264 and an elbow 266 coupled to exterior inlet hose 264. Inner box line assembly 262 includes an interior inlet hose 268 coupled to elbow 266, a union tee connector 270, a first module hose 272, and a second module hose 274. Connector 270 includes a first opening 276 to receive interior inlet hose 268, a second opening 278 to receive first module hose 272, and a third opening 280 to receive second module hose 274. First and second module hoses 272, 274 each couple through a male coupler 282 to first and second valve modules 156, 158 respectively. In operation, air from air supply 152 travels through supply line 148, enters outer box line assembly 260 through exterior inlet hose 264 and passes through elbow 266 to interior inlet hose 268. The air then travels from inlet hose 268 to union tee connector 270 where the air is divided into first module hose 272 and second module hose 274. The air passes through first and second module hoses 272, 274 into first and second valve modules 156, 158 respectively. The operation of first and second valve modules 156, 158 is described below.


Control box 58 includes a base 284, a cover 286, and a tray 288. Cover 286 includes a plurality of fasteners (i.e., screws) 290. Base 284 includes a plurality of threaded cover posts 292. Cover posts 292 are configured to receive screws 290 to couple cover 286 to base 284. Cover 286 and base 284 define an inner region 298. Tray 288 couples to base 284 with a plurality of rivets 291 riveted through a plurality of rivet holes 293 located on tray 288 and base 284.


Inner box line assembly 262, first valve module 156, second valve module 158, control board 250, and multiplexer 252 are contained within inner region 298. Base 284 further includes a plurality of control board posts 294, a plurality of multiplexer posts 296, and a plurality of module posts 300. First and second valve modules 156, 158 are coupled to module posts 300 by shoulder screws 302 and washers 304. Control board 250 and multiplexer 252 are respectively coupled to control board posts 294 and multiplexer posts 296 by a plurality of snap mounts 306.


First and second valve modules 156, 158 attach to third air lines 150a, b, d-f, and g-l through a plurality of couplers 308. Couplers 308 include a first end 310 and a second end 312. Third air lines 150a, b, d-f, and g-l each include a fitting (not shown) receivable by second end 312. Each first end 310 mounts to a port 314 in first and second valve modules 156, 158. First end 310 mounts through a plurality of openings 316 in base 284.


A plurality of feedback couplers 318 mount through a plurality of feedback openings 320 in base 284. Feedback couplers 318 include a first feedback end 322 and a second feedback end 324. First feedback end 322 couples to a feedback line (not shown) that in turn couples to a feedback port 135 located on each air zone 160. Second feedback end 324 receives a feedback transfer line 326. Each transfer line 326 couples to a pressure transducer 328 located on the control board 250. Pressure transducer 328 receives the pressure from each air zone 160 and transmits to control unit 42 a pressure data signal representing the internal air pressure of the zone 160. Control unit 42 uses these pressure signals to determine the appropriate pressures for certain mattress functions such as CPR, patient transfer, and max-inflate. Pressure signals from the transducer 328 coupled to the foot zone 160k are also used to maintain optimal pressure in foot zone 160k. In the illustrated embodiment, pressure in foot zone 160k (zone 3) is computed as a percentage of the pressure in seat zone 160e (zone 2). The pressures in seat zone 160e and head zone 160f are determined using both the tranducers 328 and the pressure sensors 136. The pressures in one or more of the zones 160 may be adjusted in real time.


As shown in FIG. 23, fill valves 163a-l and vent valves 165a-l are coupled to various portions of patient support 10 through third air lines 150a, b, d-f, and g-l. Fill valve 163a and vent valve 165a are coupled to upper foot bolsters 140c, fill valve 163b and vent valve 165b are coupled to lower side bolsters 142a, b, fill valve 163c is coupled to atmosphere and vent valve 165c is reserved for future therapies. Also, fill valve 163d and vent valve 165d are coupled to first turn assist 74a, fill valve 163e and vent valve 165e are coupled to seat bladders 62, fill valve 163f and vent valve 165f are coupled to head bladder assembly 60, fill valve 163g and vent valve 165g are coupled to foot filler 80, fill valve 163h and vent valve 165h are coupled to upper side bolsters 140a, b, fill valve 163i and vent valve 165i are coupled to deck filler 90, fill valve 163j and vent valve 165j are coupled to first turn assist 74b, fill valve 163k and vent valve 165k are coupled to foot bladders 164, fill valve 163l and vent valve 165l are coupled to lower foot bolsters 142c. Vent valves 165d, j are biased in the open position to vent air from first and second turn assist 74a, 74b when first and second turn assist 74a, 74b are not in use. Vent valves 165d, j return to their open position if the mattress loses power or pressure venting air from the first and second turn assist 74a, 74b. When air is vented from a zone 160, the pressure in the zone 160 after deflation is determined by the control system 42, 58 in real time rather than being predetermined.


In one embodiment, a user enters an input command to control unit 42. Control unit 42 processes the input command and transmits a control signal based on the input command through communication line 258 to control board 250. Additionally or alternatively, control signals could be based on operational information from control unit 42 to increase or decrease pressure within one or more of the zones 160 based on information obtained from transducers 328 and/or sensors 136.


It should be noted that in the illustrated embodiment, the mattress controls 42, 58 are independent from operation of the bed frame 4. In other embodiments, however, bed frame 4 and mattress 10 may be configured to exchange or share data through communication lines. For instance, data is communicated from bed frame 4 to mattress system 42, 58 and used to adjust support parameters of mattress 10. For instance, in one embodiment, a signal is transmitted from frame 4 when foot section 34 is retracting, so that mattress systems 42, 58 responds by decreasing internal pressure of vertical bladders 50 in foot assembly 64.


As described above, air supply 152 is capable of supplying air or acting as a vacuum to remove air from zones 160. While in supply mode, a microprocessor on control board 250 actuates corresponding fill valve 163a-l or vent valve 165a-l based on the control signal from control unit 42. For example, if the control signal indicates the pressure in head bladder assembly 160 is to be increased fill valve 163f is actuated. However, if the control signal indicates the pressure in head bladder assembly 160 is to be decreased vent valve 165f is actuated. While in vacuum mode one or more fill valves 163a-l may be actuated to allow for rapid removal of air within the corresponding zones.


The present invention has been described with reference to certain exemplary embodiments, variations, and applications. However, the present invention is defined by the appended claims and therefore should not be limited by the described embodiments, variations, and applications.

Claims
  • 1. A mattress, comprising a cover having a top portion and a bottom portion spaced from the top portion, the top portion and the bottom portion defining an interior region, the interior region comprisinga plurality of inflatable zones, each zone comprising at least one air bladder, anda pneumatic box defining an inner region, the inner region of the pneumatic box comprising a microprocessor, a valve assembly electrically coupled to the microprocessor, the valve assembly comprising a first plurality of valves in fluid communication with a first side of the inflatable zones, a second plurality of valves spaced from the first plurality of valves and being in fluid communication with a second side of the inflatable zones, a tee connector, and an inlet hose coupled to the first plurality of valves and to the second plurality of valves and to a source of pressurized air located outside the pneumatic box via the tee connector.
  • 2. The mattress of claim 1, wherein the pneumatic box is releasably coupled to the bottom portion of the cover in the interior region.
  • 3. The mattress of claim 2, wherein the pneumatic box is positioned underneath the inflatable zones in the interior region.
  • 4. The mattress of claim 3, wherein the pneumatic box is positioned underneath a sensor pad.
  • 5. The mattress of claim 4, wherein the mattress comprises at least a head section and a foot section spaced from the head section, the foot section comprises a plurality of vertical air cells positioned across a width of the foot section, and the pneumatic box is positioned underneath the vertical cells in the foot section of the mattress.
  • 6. The mattress of claim 1, comprising a head angle sensor located in the interior region of the mattress and an angle sensor cable having one end coupled to the head angle sensor and another end coupled to the pneumatic box, wherein the angle sensor cable is located in the interior region and configured to send electrical signals from the head angle sensor to the microprocessor in the pneumatic box.
  • 7. The mattress of claim 1, wherein the valve assembly comprises a valve module, the valve module comprises a plurality of independently actuatable fill valves and vent valves, each of the fill valves is fluidly coupled to one of the inflatable zones, and each of the vent valve is fluidly coupled to one of the inflatable zones.
  • 8. The mattress of claim 1, wherein the plurality of inflatable zones comprises a head section bladder assembly, a seat section bladder assembly, a foot section bladder assembly, and a turn-assist bladder assembly.
  • 9. The mattress of claim 1, wherein the pneumatic box comprises a plurality of pressure sensors, and each pressure sensor senses the internal air pressure of one of the inflatable zones.
  • 10. The mattress system of claim 9, wherein the air supply comprises a first source of pressurized air in fluid communication with a layer of resilient, breathable fabric and a second source of pressurized air in fluid communication with each of the inflatable zones.
  • 11. The mattress system of claim 9, wherein the valve assembly comprises a first valve module and a second valve module, and a tee connector couples the air supply to the first and second valve modules.
  • 12. A mattress, comprising a cover having a top portion and a bottom portion spaced from the top portion, the top portion and the bottom portion defining an interior region, the interior region comprisinga resilient, breathable three-dimensional fabric,a plurality of inflatable zones, each zone comprising at least one air bladder, at least one of the zones comprising a plurality of vertical air cells positioned across a width of the mattress,a sensor pad configured to sense force applied to the mattress, anda pneumatic box defining an inner region, the inner region of the pneumatic box comprising a microprocessor, a valve assembly electrically coupled to the microprocessor, the valve assembly comprising a plurality of valves in fluid communication with each of the inflatable zones, wherein the valve assembly comprises a first valve module and a second valve module spaced from the first valve module, the first valve module comprises a first plurality of valves, each valve of the plurality of first valves is fluidly coupled to one side of the inflatable zone, the second valve module comprises a second plurality of valves, each valve of the second plurality of valves is fluidly coupled to another side of the inflatable zone, and the inner region of the pneumatic box comprises a tee connector and an inlet hose coupled to the first valve module and to the second valve module and to a source of pressurized air located outside the pneumatic box by the tee connector.
  • 13. A mattress system, comprising a mattress comprisinga cover defining an interior region, the interior region comprisinga layer of resilient, breathable three-dimensional fabric,a plurality of inflatable zones, each zone comprising at least one air bladder, at least one of the zones comprising a plurality of vertical air cells positioned across a width of the mattress,a pneumatic box defining an inner region, the inner region of the pneumatic box comprising a multiplexer electrically coupled to the sensor pad and to a microprocessor, a valve assembly electrically coupled to the microprocessor, the valve assembly comprising a first plurality of valves in fluid communication with a first side of the inflatable zones and a second plurality of valves spaced from the first plurality of valves and in fluid communication with a second side of the inflatable zones, and the inner region of the pneumatic box comprising an inlet hose coupled to the first plurality of valves, the second plurality of valves, and an air supply located outside the pneumatic box by a tee connector,a control unit spaced from the mattress, the control unit comprising a user input device, a display, and the air supply,a first air line coupling the air supply to the layer of resilient, breathable three-dimensional fabric, andan electrical line coupling the control unit to the pneumatic box.
  • 14. A mattress, comprising a cover having a top portion and a bottom portion spaced from the top portion, the top portion and the bottom portion defining an interior region, the interior region comprisinga resilient, breathable three-dimensional fabric,a plurality of inflatable zones, each zone comprising at least one air bladder, at least one of the zones comprising a plurality of vertical air cells positioned across a width of the mattress,a sensor pad configured to sense force applied to the mattress, anda pneumatic box defining an inner region, the inner region of the pneumatic box comprising a multiplexer electrically coupled to the sensor pad and to a microprocessor, a valve assembly electrically coupled to the microprocessor, the valve assembly comprising a plurality of valves in fluid communication with each of the inflatable zones, and the inner region of the pneumatic box comprising a plurality of hoses and a tee connector, the plurality of hoses and the tee connector coupling the valve assembly to a source of pressurized air located outside the pneumatic box.
  • 15. The mattress of claim 14, wherein the plurality of inflatable zones comprises a plurality of filler bladders located in the interior region, and one of the filler bladders is inflated when the mattress is used with a first bed frame and not inflated when the mattress is used with a second bed frame.
  • 16. A mattress, comprising a cover having a top portion and a bottom portion spaced from the top portion, the top portion and the bottom portion defining an interior region, the interior region comprisinga resilient, breathable three-dimensional fabric,a plurality of inflatable zones, each zone comprising at least one air bladder, at least one of the zones comprising a plurality of vertical air cells positioned across a width of the mattress,a sensor pad configured to sense force applied to the mattress, anda pneumatic box defining an inner region, the inner region of the pneumatic box comprising a multiplexer electrically coupled to the sensor pad and to a microprocessor, a valve assembly electrically coupled to the microprocessor, the valve assembly comprising a first valve module comprising a first plurality of valves, a second valve module comprising a second plurality of valves, the first and second valve modules being supported by different sides of the pneumatic box, the first and second valve modules being in fluid communication with each of the inflatable zones,wherein the pneumatic box comprises a plurality of pressure sensors, and each pressure sensor senses the internal air pressure of one of the inflatable zones,wherein an air supply located outside the pneumatic box comprises a first source of pressurized air in fluid communication with the layer of resilient, breathable fabric and a second source of pressurized air in fluid communication with each of the inflatable zones, andwherein the first valve module controls inflation and deflation of a first side of the inflatable zones and the second valve module controls inflation and deflation of a second side of the inflatable zones located opposite the first side, andwherein the inner region of the pneumatic box comprises a tee connector, a plurality of hoses coupled to the tee connector, the first and second valve modules and to the air supply.
  • 17. A pneumatic system for a mattress, comprising: a box comprising a base and a cover removably coupled to the base, the base and the cover defining an inner region, the inner region comprisinga multiplexer configured to receive control signals from a control unit located outside the mattress,an air control circuit board in two-way electrical communication with the multiplexer,a plurality of air control valves coupled to the air control circuit board, including a first valve supported by a first end of the box and a second valve supported by a second end of the box,a fastener coupled to the box to releasably couple the box to an interior portion of a mattress,a first hose coupled to the first valve,a second hose coupled to the second valve, andan inlet hose coupled to the first hose, the second hose, and to a source of pressurized air located outside the box, anda tee connector, wherein the first hose, the second hose, and the inlet hose are coupled to the connector.
  • 18. The pneumatic system of claim 17, wherein the plurality of air control valves comprises a first valve module supported by a first end of the box and a second valve module supported by a second end of the box opposing the first end.
  • 19. A pneumatic system for a mattress, comprising: a box comprising a base and a cover removably coupled to the base, the base and the cover defining an inner region, the inner region comprisinga multiplexer configured to receive sensor signals from a sensor pad located in the mattress and to receive control signals from a control unit located outside the mattress,an air control circuit board in two-way electrical communication with the multiplexer,a plurality of air control valves coupled to the air control circuit board, anda fastener coupled to the box to releasably couple the box to an interior portion of a mattress,wherein the plurality of air control valves comprises a first valve module supported by a first end of the box and a second valve module supported by a second end of the box spaced from the first end, andwherein each of the first and second valve modules comprises a first fill valve coupled to a foot bladder of the mattress, a first vent valve coupled to the foot bladder, a second fill valve coupled to a head bladder of the mattress, a second vent valve coupled to the head bladder of the mattress, a third fill valve coupled to a turn assist bladder of the mattress, a third vent valve coupled to the turn assist bladder of the mattress, and the third vent valve is biased in an open position, andwherein the inner region of the box comprises a tee connector, a first module hose coupled to the first valve module and the tee connector, a second module hose coupled to the second valve module and the tee connector, and an inlet hose coupled to the first and second valve modules and the tee connector and to a source of pressurized air located outside the box.
  • 20. A pneumatic system for a mattress, comprising: a box comprising a base and a cover removably coupled to the base, the base and the cover defining an inner region, the inner region comprisinga multiplexer configured to receive sensor signals from a sensor pad located in the mattress and to receive control signals from a control unit located outside the mattress,an air control circuit board in two-way electrical communication with the multiplexer,a plurality of air control valves coupled to the air control circuit board, anda fastener coupled to the box to releasably couple the box to an interior portion of a mattress,wherein the plurality of air control valves comprises a first valve module supported by a first end of the box and a second valve module supported by a second end of the box spaced from the first end, andwherein the inner region of the box comprises a tee connector, a first module hose coupled to the first valve module and the tee connector, a second module hose coupled to the second valve module and the tee connector, and an inlet hose coupled to the tee connector and to a source of pressurized air located outside the box.
CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 11/324,520 to Bobey et al., entitled PATIENT SUPPORT, filed Jan. 3, 2006, now U.S. Pat. No. 7,698,765 which is a continuation of U.S. patent application Ser. No. 11/120,080 to Bobey et al, entitled PATIENT SUPPORT, filed May 2, 2005, now abandoned which claims the benefit of U.S. Provisional patent application Ser. No. 60/567,215 to Balaton et al., entitled PRESSURE RELIEF SUPPORT SURFACE, filed Apr. 30, 2004, and U.S. Provisional Patent Application Ser. No. 60/665,241 of Hopkins et al., entitled THERMOREGULATING DEVICE WITH SUPPORT CELLS, filed Mar. 25, 2005, and U.S. Provisional Patent Application Ser. No. 60/665,141 of Hopkins et al., entitled THERMOREGULATING DEVICE, filed Mar. 25, 2005, and U.S. Provisional Patent Application Ser. No. 60/636,252 of Chambers et al., entitled QUICK CONNECTOR FOR MULTIMEDIA, filed Dec. 15, 2004, and U.S. Provisional Patent Application Ser. No. 60/608,013 of Branson, entitled ROTATION SENSOR FOR A MATTRESS, filed Sep. 8, 2004, and all of which are incorporated herein by this reference in their entirety. The inventors of the above applications and the inventors of the present invention are obligated to assign their rights to the same assignee. The present application is also related to U.S. patent application Ser. No. 11/119,980, entitled PRESSURE RELIEF SURFACE, and U.S. patent application Ser. No. 11/119,991, entitled PATIENT SUPPORT HAVING REAL TIME PRESSURE CONTROL, and U.S. patent application Ser. No. 11/119,635, entitled LACK OF PATIENT MOVEMENT MONITOR AND METHOD, all of which are filed on the same date herewith, and all of which are incorporated herein by this reference. The inventors of the above applications and the inventors of the present invention are obligated to assign their rights to the same assignee. In addition, PCT patent application no. PCT/CA05/00658, entitled BODY SUPPORT APPARATUS HAVING AUTOMATIC PRESSURE CONTROL AND RELATED METHODS of Lokhorst et al. is incorporated herein by this reference in its entirety.

US Referenced Citations (560)
Number Name Date Kind
779576 Berryman Jan 1905 A
800967 Young et al. Oct 1905 A
1121277 Mitchell Dec 1914 A
1332933 Sylvester Mar 1920 A
1758546 Wartmann May 1930 A
1772310 Hart Aug 1930 A
1969554 Gloudemans Aug 1934 A
2425790 Fletcher Aug 1947 A
3303518 Ingram Feb 1967 A
3428973 Hargest et al. Feb 1969 A
3492988 DeMare Feb 1970 A
3605145 Graebe Sep 1971 A
3639927 Munch Feb 1972 A
3656478 Swersey Apr 1972 A
3746835 Yu et al. Jul 1973 A
3747952 Graebe Jul 1973 A
3772717 Yuen et al. Nov 1973 A
3836900 Mansfield Sep 1974 A
3852738 Niederberger et al. Dec 1974 A
3866604 Curless et al. Feb 1975 A
3870450 Grabe Mar 1975 A
3903878 Spann Sep 1975 A
3931654 Spann Jan 1976 A
3938205 Spann Feb 1976 A
3939829 Spann Feb 1976 A
3946451 Spann Mar 1976 A
3978530 Amarantos Sep 1976 A
3991414 Moran Nov 1976 A
3999235 Mollura Dec 1976 A
4002216 Solow Jan 1977 A
4005236 Graebe Jan 1977 A
4020482 Feldl Apr 1977 A
4038973 Moore Aug 1977 A
4067005 Levy et al. Jan 1978 A
4108170 Spann Aug 1978 A
4114620 Moore et al. Sep 1978 A
4135504 Spann Jan 1979 A
4172216 O'Shea Oct 1979 A
4179692 Vance Dec 1979 A
4185813 Spann Jan 1980 A
4193149 Welch Mar 1980 A
4195287 McCoy et al. Mar 1980 A
4196425 Williams, Jr. et al. Apr 1980 A
4210317 Spann et al. Jul 1980 A
4214326 Spann Jul 1980 A
4220984 Truher et al. Sep 1980 A
4233700 Spann Nov 1980 A
4242672 Gault Dec 1980 A
4263586 Nicholas Apr 1981 A
4295133 Vance Oct 1981 A
4320766 Alihanka et al. Mar 1982 A
4327714 Spann May 1982 A
4347633 Gammons et al. Sep 1982 A
4378476 Nicholas Mar 1983 A
4418514 Spann Dec 1983 A
4433678 Spann Feb 1984 A
4435864 Callaway Mar 1984 A
4448228 Hashimoto et al. May 1984 A
4471952 Spann Sep 1984 A
4477935 Griffin Oct 1984 A
4482138 Spann Nov 1984 A
4483029 Paul Nov 1984 A
4483663 Myers Nov 1984 A
4525885 Hunt Jul 1985 A
4527298 Moulton Jul 1985 A
4537266 Greenberg Aug 1985 A
4539560 Fleck et al. Sep 1985 A
4541135 Karpov Sep 1985 A
4541136 Graebe Sep 1985 A
4542547 Sato Sep 1985 A
4554930 Kress Nov 1985 A
4573456 Spann Mar 1986 A
4577185 Andersen Mar 1986 A
4583084 Henderson et al. Apr 1986 A
4598701 Schaefer Jul 1986 A
4603445 Spann Aug 1986 A
4605582 Sias et al. Aug 1986 A
4628556 Blackman Dec 1986 A
4633237 Tucknott et al. Dec 1986 A
4637083 Goodwin Jan 1987 A
4638307 Swartout Jan 1987 A
4638519 Hess Jan 1987 A
4639360 Valyocsik Jan 1987 A
4655505 Kashiwamura et al. Apr 1987 A
4665573 Fiore May 1987 A
4665574 Filips et al. May 1987 A
4673605 Sias et al. Jun 1987 A
4679264 Mollura Jul 1987 A
4686725 Mitchell Aug 1987 A
4688283 Jacobson et al. Aug 1987 A
4689844 Alivizatos Sep 1987 A
4694520 Paul Sep 1987 A
4694521 Tominaga Sep 1987 A
4698864 Graebe Oct 1987 A
4700180 Vance Oct 1987 A
4700447 Spann Oct 1987 A
4701168 Gammons Oct 1987 A
4711275 Ford et al. Dec 1987 A
4726087 Schaefer et al. Feb 1988 A
4728551 Jay Mar 1988 A
4730610 Graebe Mar 1988 A
4742437 Downey May 1988 A
4745647 Goodwin May 1988 A
4768241 Beney Sep 1988 A
4768249 Goodwin Sep 1988 A
4797962 Goode Jan 1989 A
4800973 Angel Jan 1989 A
4803625 Fu et al. Feb 1989 A
4825486 Kimura et al. May 1989 A
4825868 Susa et al. May 1989 A
4827763 Bourland May 1989 A
4829615 Raymond May 1989 A
4832007 Davis, Jr. et al. May 1989 A
4833457 Graebe, Jr. May 1989 A
4837877 Hamada et al. Jun 1989 A
4839512 Speck Jun 1989 A
4839932 Williamson Jun 1989 A
4845323 Beggs Jul 1989 A
4860397 Gusakov Aug 1989 A
4862538 Spann et al. Sep 1989 A
4884304 Elkins Dec 1989 A
4901387 Luke Feb 1990 A
4905266 Kuck et al. Feb 1990 A
4907308 Leininger et al. Mar 1990 A
4907845 Wood Mar 1990 A
D307687 Raburn May 1990 S
D307688 Schaefer May 1990 S
D307689 Schaefer May 1990 S
D307690 Raburn May 1990 S
4934002 Watanabe Jun 1990 A
4934468 Koerber, Sr. et al. Jun 1990 A
4944060 Perry et al. Jul 1990 A
4945588 Cassidy et al. Aug 1990 A
4947152 Hodges Aug 1990 A
4949414 Thomas et al. Aug 1990 A
4951334 Maier Aug 1990 A
4951335 Eady Aug 1990 A
4953244 Koerber, Sr. et al. Sep 1990 A
4953913 Graebe Sep 1990 A
4962552 Hasty Oct 1990 A
4969459 Gusakov Nov 1990 A
4982466 Higgins et al. Jan 1991 A
4989283 Krouskop Feb 1991 A
4991244 Walker Feb 1991 A
4993920 Harkleroad et al. Feb 1991 A
4995124 Wridge, Jr. et al. Feb 1991 A
5003654 Vrzalik Apr 1991 A
5005240 Vrzalik Apr 1991 A
5007124 Raburn et al. Apr 1991 A
5008141 Shinozuka Apr 1991 A
5010610 Ackley Apr 1991 A
5010772 Bourland et al. Apr 1991 A
5010774 Kikuo et al. Apr 1991 A
5014375 Coonrad et al. May 1991 A
5016268 Lotman May 1991 A
5020176 Dotson Jun 1991 A
5025519 Spann et al. Jun 1991 A
5029352 Hargest et al. Jul 1991 A
5036559 Hargest Aug 1991 A
5039158 Maier Aug 1991 A
5044029 Vrzalik Sep 1991 A
5048137 Rogers Sep 1991 A
5052068 Graebe Oct 1991 A
5060174 Gross Oct 1991 A
5062169 Kennedy et al. Nov 1991 A
5067189 Weedling et al. Nov 1991 A
5068935 Hagopian Dec 1991 A
5070560 Wilkinson Dec 1991 A
5072468 Hagopian Dec 1991 A
D322907 Raburn Jan 1992 S
5090077 Caden et al. Feb 1992 A
5092415 Asano Mar 1992 A
5103519 Hasty Apr 1992 A
5105488 Hutchinson et al. Apr 1992 A
5109561 Schild May 1992 A
5111544 Graebe May 1992 A
D326976 Wickis, Jr. et al. Jun 1992 S
5117518 Schild Jun 1992 A
5121512 Kaufmann Jun 1992 A
5129115 Higgins et al. Jul 1992 A
5136741 Balonick et al. Aug 1992 A
5137102 Houston, Sr. et al. Aug 1992 A
5140306 Hemphill, Sr. Aug 1992 A
5140309 Gusakov Aug 1992 A
5142717 Everard et al. Sep 1992 A
5144284 Hammett Sep 1992 A
5144705 Rogers Sep 1992 A
5148706 Masuda et al. Sep 1992 A
5152021 Vrzalik Oct 1992 A
5152023 Greabe Oct 1992 A
5152319 Hannagan et al. Oct 1992 A
5163196 Graebe et al. Nov 1992 A
5168589 Stroh et al. Dec 1992 A
5172439 Farley Dec 1992 A
5179742 Oberle Jan 1993 A
5180619 Landi et al. Jan 1993 A
5181288 Heaton et al. Jan 1993 A
5182826 Thomas et al. Feb 1993 A
5183039 Sarian et al. Feb 1993 A
5184112 Gusakov Feb 1993 A
5184122 Decious et al. Feb 1993 A
5189742 Schild Mar 1993 A
5194847 Taylor et al. Mar 1993 A
5201780 Dinsmoor, III et al. Apr 1993 A
D336400 Mitchell et al. Jun 1993 S
5216768 Bodine et al. Jun 1993 A
D337217 Strickland Jul 1993 S
5234065 Schmidt Aug 1993 A
5235319 Hill et al. Aug 1993 A
5237501 Gusakov Aug 1993 A
5249319 Higgs Oct 1993 A
5251347 Hopper et al. Oct 1993 A
5251349 Thomas et al. Oct 1993 A
5252278 Spann et al. Oct 1993 A
5253656 Rincoe Oct 1993 A
5255404 Dinsmoor, III et al. Oct 1993 A
5265293 Spahn et al. Nov 1993 A
D342411 Graebe Dec 1993 S
5267364 Volk Dec 1993 A
5269030 Pahno et al. Dec 1993 A
D343531 Hagoplan Jan 1994 S
5276432 Travis Jan 1994 A
5281000 Ackley Jan 1994 A
5289030 Yamazaki et al. Feb 1994 A
5303436 Dinsmoor, III et al. Apr 1994 A
5316041 Ramacier, Jr. et al. May 1994 A
5325551 Tappel et al. Jul 1994 A
5331549 Crawford, Jr. Jul 1994 A
5350417 Augustine Sep 1994 A
5353012 Barham et al. Oct 1994 A
5362543 Nickerson Nov 1994 A
5364162 Bar et al. Nov 1994 A
5369826 Ikeda Dec 1994 A
5369828 Graebe Dec 1994 A
5373595 Johnson et al. Dec 1994 A
5375604 Kelly et al. Dec 1994 A
5377369 Shirai Jan 1995 A
5377373 Shirai Jan 1995 A
5379471 Holdredge Jan 1995 A
D355322 Ackley et al. Feb 1995 S
D355488 Hargest et al. Feb 1995 S
5388290 Shirai Feb 1995 A
5398354 Balonick et al. Mar 1995 A
D357740 Kennemore Apr 1995 S
5402542 Viard Apr 1995 A
5408754 Raab Apr 1995 A
5410297 Joseph et al. Apr 1995 A
5412821 Wilkinson May 1995 A
D359190 Hargest et al. Jun 1995 S
5430901 Farley Jul 1995 A
5441047 David et al. Aug 1995 A
5444881 Landi et al. Aug 1995 A
D362578 Ackley Sep 1995 S
5448788 Wu Sep 1995 A
5448789 Shirai Sep 1995 A
5448996 Bellin et al. Sep 1995 A
5452940 Maier Sep 1995 A
5461741 Graebe Oct 1995 A
5469591 Nomura Nov 1995 A
5471198 Newham Nov 1995 A
5482050 Smokoff et al. Jan 1996 A
5483709 Foster et al. Jan 1996 A
5483711 Hargest et al. Jan 1996 A
5487196 Wilkinson et al. Jan 1996 A
5494046 Cross Feb 1996 A
5494051 Schneider, Sr. Feb 1996 A
5500965 Hannagan et al. Mar 1996 A
5509155 Zigarac et al. Apr 1996 A
5511260 Dinsmoor, III et al. Apr 1996 A
D370066 Kennemore May 1996 S
5534851 Russek Jul 1996 A
5539942 Melou Jul 1996 A
5539943 Romano Jul 1996 A
5542136 Tappel Aug 1996 A
5542138 Williams et al. Aug 1996 A
5544649 David et al. Aug 1996 A
5554835 Newham Sep 1996 A
5555224 DePonty et al. Sep 1996 A
5555578 Wyatt et al. Sep 1996 A
5558638 Evers et al. Sep 1996 A
D374368 Sprigle et al. Oct 1996 S
5560374 Viard Oct 1996 A
5561873 Weedling Oct 1996 A
5561875 Graebe Oct 1996 A
5564142 Liu Oct 1996 A
5580504 Spann et al. Dec 1996 A
5583832 DePonty Dec 1996 A
5586346 Stacy et al. Dec 1996 A
5588167 Pahno et al. Dec 1996 A
5596781 Graebe Jan 1997 A
5611094 D'Entremont Mar 1997 A
5611096 Bartlett et al. Mar 1997 A
5611772 Fujimoto et al. Mar 1997 A
5623736 Soltani et al. Apr 1997 A
5630238 Weismiller et al. May 1997 A
5633627 Newham May 1997 A
5634224 Gates Jun 1997 A
5634225 Miller, Sr. et al. Jun 1997 A
5649331 Wilkinson et al. Jul 1997 A
5651151 Schild Jul 1997 A
5652985 Wilkinson et al. Aug 1997 A
5654694 Newham Aug 1997 A
5664270 Bell et al. Sep 1997 A
5666681 Meyer et al. Sep 1997 A
D386035 Matsler et al. Nov 1997 S
5687438 Biggie et al. Nov 1997 A
5689845 Sobieralski Nov 1997 A
5692256 Kramer et al. Dec 1997 A
5699570 Wilkinson et al. Dec 1997 A
5701622 Biggie et al. Dec 1997 A
D388995 Hargest et al. Jan 1998 S
D390404 Hargest et al. Feb 1998 S
D390665 Kennemore Feb 1998 S
5715548 Weismiller et al. Feb 1998 A
D393071 Kennemore Mar 1998 S
5731062 Kim et al. Mar 1998 A
5737788 Castellino et al. Apr 1998 A
D394578 Raburn May 1998 S
5745939 Flick et al. May 1998 A
5749111 Pearce May 1998 A
5749374 Schneider, Sr. May 1998 A
5755000 Thompson May 1998 A
5765564 Ewing Jun 1998 A
5767774 Wright et al. Jun 1998 A
5771511 Kummer et al. Jun 1998 A
5780798 Hall-Jackson Jul 1998 A
5781949 Weismiller et al. Jul 1998 A
5785716 Bayron et al. Jul 1998 A
D397443 Fletcher et al. Aug 1998 S
5787528 Antinori Aug 1998 A
5787531 Pepe Aug 1998 A
5794288 Soltani et al. Aug 1998 A
5794289 Wortman et al. Aug 1998 A
5796059 Boon Aug 1998 A
5797155 Maier et al. Aug 1998 A
5808552 Wiley Sep 1998 A
5815862 Rygiel Oct 1998 A
5815864 Sloop Oct 1998 A
5815865 Washburn et al. Oct 1998 A
5817391 Rock et al. Oct 1998 A
5829081 Pearce Nov 1998 A
5838244 Schmidt et al. Nov 1998 A
5840400 Landi et al. Nov 1998 A
5844488 Musick Dec 1998 A
5845352 Matsler et al. Dec 1998 A
5848450 Oexman et al. Dec 1998 A
D403773 Fletcher et al. Jan 1999 S
5869164 Nickerson et al. Feb 1999 A
5873137 Yavets-Chen Feb 1999 A
D407353 Bar et al. Mar 1999 S
5879309 Johnson et al. Mar 1999 A
5882349 Wilkerson et al. Mar 1999 A
D408767 Bar et al. Apr 1999 S
5901391 Kato May 1999 A
5901393 Pepe et al. May 1999 A
D411301 Hampson et al. Jun 1999 S
5913774 Feddema Jun 1999 A
5917180 Reimer et al. Jun 1999 A
5926883 Rechin et al. Jul 1999 A
5926884 Biggie et al. Jul 1999 A
D412685 Bar et al. Aug 1999 S
D413085 Bar et al. Aug 1999 S
5934280 Viard et al. Aug 1999 A
5941836 Friedman Aug 1999 A
D413841 Bar et al. Sep 1999 S
5954402 McInturff Sep 1999 A
5957872 Flick Sep 1999 A
D415567 Bar Oct 1999 S
D415834 Bar Oct 1999 S
5963137 Waters, Sr. Oct 1999 A
5966762 Wu Oct 1999 A
5966763 Thomas et al. Oct 1999 A
5966782 Ishihara et al. Oct 1999 A
5970550 Gazes Oct 1999 A
5970789 Meyer et al. Oct 1999 A
D416326 Bar Nov 1999 S
5983428 Hannagan Nov 1999 A
5983429 Stacy et al. Nov 1999 A
5984418 McInturff Nov 1999 A
5987668 Ackley Nov 1999 A
5989285 De Vilbiss et al. Nov 1999 A
5990799 Boon et al. Nov 1999 A
5991949 Miller, Sr. et al. Nov 1999 A
5993400 Rincoe et al. Nov 1999 A
5994450 Pearce Nov 1999 A
6006383 Pile et al. Dec 1999 A
6007898 Kim et al. Dec 1999 A
6009580 Caminade et al. Jan 2000 A
6014346 Malone Jan 2000 A
6025782 Newham Feb 2000 A
6026527 Pearce Feb 2000 A
6030351 Schmidt et al. Feb 2000 A
6036271 Wilkinson et al. Mar 2000 A
6036660 Toms Mar 2000 A
6047424 Osborne et al. Apr 2000 A
6049281 Osterweil Apr 2000 A
6049927 Thomas et al. Apr 2000 A
6058537 Larson May 2000 A
6058538 Chapman et al. May 2000 A
6067019 Scott May 2000 A
6073289 Bolden et al. Jun 2000 A
6076208 Heimbrock et al. Jun 2000 A
6078253 Fowler Jun 2000 A
6078261 Davsko Jun 2000 A
6079070 Flick Jun 2000 A
6085372 James et al. Jul 2000 A
6094762 Viard et al. Aug 2000 A
6095611 Bar et al. Aug 2000 A
6111509 Holmes Aug 2000 A
6115860 Vrzalik Sep 2000 A
6129686 Friedman Oct 2000 A
6131469 Wortman et al. Oct 2000 A
6133837 Riley Oct 2000 A
6134732 Chapman et al. Oct 2000 A
6138302 Sashin et al. Oct 2000 A
6140921 Baron et al. Oct 2000 A
6145142 Reichin et al. Nov 2000 A
6145143 Hicks et al. Nov 2000 A
6146332 Pinsonneault et al. Nov 2000 A
6148461 Cook et al. Nov 2000 A
6154907 Cinquin Dec 2000 A
6165142 Bar Dec 2000 A
6166644 Stroda Dec 2000 A
6175752 Say et al. Jan 2001 B1
6182316 Thomas et al. Feb 2001 B1
D439098 Matsler et al. Mar 2001 S
6202237 Chang Mar 2001 B1
6202672 Ellis et al. Mar 2001 B1
6204767 Sparks Mar 2001 B1
6208250 Dixon et al. Mar 2001 B1
6212718 Stolpmann et al. Apr 2001 B1
6216300 Hannagan Apr 2001 B1
6223369 Maier et al. May 2001 B1
6230342 Haugs May 2001 B1
6239704 Olson May 2001 B1
6240584 Perez et al. Jun 2001 B1
6255956 Tingley et al. Jul 2001 B1
6256819 Maier et al. Jul 2001 B1
6256822 Weston et al. Jul 2001 B1
6260221 Grabell et al. Jul 2001 B1
D446674 Chapman et al. Aug 2001 S
6269505 Wilkinson Aug 2001 B1
6271760 Watanabe et al. Aug 2001 B1
6272707 Robrecht et al. Aug 2001 B1
6279183 Kummer et al. Aug 2001 B1
6280392 Yoshimi et al. Aug 2001 B1
6287253 Ortega et al. Sep 2001 B1
6295675 Ellis et al. Oct 2001 B1
6297738 Newham Oct 2001 B1
6307476 Smith et al. Oct 2001 B1
6315740 Singh Nov 2001 B1
6317912 Graebe Nov 2001 B1
6320510 Menkedick et al. Nov 2001 B2
6337446 Hulburt Jan 2002 B1
6349439 Cook et al. Feb 2002 B1
6351863 Meyer et al. Mar 2002 B1
6353394 Maeda et al. Mar 2002 B1
6353950 Bartlett et al. Mar 2002 B1
6357065 Adams Mar 2002 B1
6357066 Pierce Mar 2002 B1
6357491 Buchanan et al. Mar 2002 B1
6370716 Wilkinson Apr 2002 B1
6375633 Endress et al. Apr 2002 B1
6378152 Washburn et al. Apr 2002 B1
6384728 Kanor et al. May 2002 B1
6385804 Barber et al. May 2002 B1
6393642 Pollman et al. May 2002 B1
6401283 Thomas et al. Jun 2002 B2
6403196 Bessey et al. Jun 2002 B1
6417777 Fitzgerald et al. Jul 2002 B2
6421859 Hicks et al. Jul 2002 B1
6438776 Ferrand et al. Aug 2002 B2
6441323 Montagnino Aug 2002 B1
6441742 Lovely et al. Aug 2002 B1
6442780 Phillips et al. Sep 2002 B1
D463701 Borcherding et al. Oct 2002 S
6467111 Vrzalik et al. Oct 2002 B1
6468234 Van der Loos et al. Oct 2002 B1
6474743 Harker et al. Nov 2002 B1
6485441 Woodward Nov 2002 B2
6487739 Harker Dec 2002 B1
6493568 Bell et al. Dec 2002 B1
6499167 Ellis et al. Dec 2002 B1
6517510 Stewart et al. Feb 2003 B1
6544200 Smith et al. Apr 2003 B1
6550085 Roux Apr 2003 B2
6556149 Reimer et al. Apr 2003 B1
6560803 Zur May 2003 B2
6560804 Wise et al. May 2003 B2
6564404 Nanahara May 2003 B1
6564405 Barr et al. May 2003 B1
6564410 Graebe et al. May 2003 B2
6564411 Pirzada May 2003 B2
6566833 Bartlett May 2003 B2
6568273 Reimer May 2003 B2
6578219 Gabel et al. Jun 2003 B1
6582456 Hand et al. Jun 2003 B1
6583727 Nunome Jun 2003 B2
6591437 Phillips Jul 2003 B1
6593588 Reimer Jul 2003 B1
6606754 Flick Aug 2003 B1
6611783 Kelly, Jr. et al. Aug 2003 B2
6623080 Clapper Sep 2003 B2
6646556 Smith Nov 2003 B1
6662391 Wilson et al. Dec 2003 B2
6668399 Malstaff et al. Dec 2003 B2
6671905 Bartlett et al. Jan 2004 B2
6684430 Roux Feb 2004 B2
6687936 Graebe et al. Feb 2004 B2
6687937 Harker Feb 2004 B2
6687987 Mayer et al. Feb 2004 B2
6689079 Flick et al. Feb 2004 B2
6691345 Nanahara Feb 2004 B2
6701556 Romano et al. Mar 2004 B2
6715169 Niederkrom Apr 2004 B2
6719708 Jansen Apr 2004 B1
6721979 Vrzalik et al. Apr 2004 B1
6721980 Price et al. Apr 2004 B1
6725479 Stryker et al. Apr 2004 B1
6727445 Cullinan et al. Apr 2004 B2
6730115 Heaton May 2004 B1
6735799 Ellis et al. May 2004 B1
6735801 Henley et al. May 2004 B2
6760939 Ellis et al. Jul 2004 B2
6782574 Totton et al. Aug 2004 B2
6848135 Kohlman Feb 2005 B1
6877178 Chapman et al. Apr 2005 B2
7201063 Taylor Apr 2007 B2
20010001235 Menkedick et al. May 2001 A1
20010011480 Reimer Aug 2001 A1
20010023511 Wilkinson Sep 2001 A1
20010029628 Ferrand et al. Oct 2001 A1
20020066143 Graebe et al. Jun 2002 A1
20020067273 Jacque et al. Jun 2002 A1
20020070867 Conway et al. Jun 2002 A1
20020073489 Totton et al. Jun 2002 A1
20020080037 Dixon et al. Jun 2002 A1
20020128572 Chang Sep 2002 A1
20020138910 Boyd Oct 2002 A1
20020148046 Pirzada Oct 2002 A1
20020186136 Schuman Dec 2002 A1
20020196148 Nunome Dec 2002 A1
20030014817 Gallant et al. Jan 2003 A1
20030024051 Wilkinson Feb 2003 A2
20030026971 Inkster et al. Feb 2003 A1
20030030319 Clapper Feb 2003 A1
20030063010 Smith et al. Apr 2003 A1
20030073936 Raisanen Apr 2003 A1
20030079549 Lokhorst et al. May 2003 A1
20030090383 Conway May 2003 A1
20030114736 Reed et al. Jun 2003 A1
20030145386 Kemp Aug 2003 A1
20030182728 Chapman et al. Oct 2003 A1
20030208849 Wilkinson Nov 2003 A1
20030216670 Beggs Nov 2003 A1
20030236474 Singh Dec 2003 A1
20040015103 Aminian et al. Jan 2004 A1
20040046668 Smith et al. Mar 2004 A1
20040064072 Shapira Apr 2004 A1
20070163052 Romano et al. Jul 2007 A1
Foreign Referenced Citations (38)
Number Date Country
2 393 880 Jan 2004 CA
295 02 025 Jun 1996 DE
103 16 162 Oct 2004 DE
103 33 742 Feb 2005 DE
0 218 301 Apr 1987 EP
0 663 169 Jul 1995 EP
0 853 918 Jul 1998 EP
2 183 01 Jul 1998 EP
0 908 168 Apr 1999 EP
1 541 085 Jun 2005 EP
2 596 950 Oct 1987 FR
2751530 Jan 1998 FR
2 814 062 Mar 2002 FR
159299 Feb 1921 GB
2 235 776 Mar 1991 GB
2 329 250 Mar 1999 GB
2000 316915 Nov 2000 JP
2007-159981 Jun 2007 JP
WO9409686 May 1994 WO
WO9633641 Oct 1996 WO
9724916 Jul 1997 WO
WO 9820828 May 1998 WO
WO 9911204 Mar 1999 WO
9956591 Nov 1999 WO
WO 0003625 Jan 2000 WO
WO 0051541 Sep 2000 WO
0164103 Sep 2001 WO
0191617 Dec 2001 WO
0195848 Dec 2001 WO
WO 03005935 Jan 2003 WO
WO 03006074 Jan 2003 WO
WO 03041538 May 2003 WO
WO 03073825 Sep 2003 WO
WO 03073825 Sep 2003 WO
WO 2004006768 Jan 2004 WO
2004112611 Dec 2004 WO
WO 2004112611 Dec 2004 WO
WO2005013787 Feb 2005 WO
Related Publications (1)
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20100095462 A1 Apr 2010 US
Provisional Applications (5)
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60567215 Apr 2004 US
60665241 Mar 2005 US
60665141 Mar 2005 US
60636252 Dec 2004 US
60608013 Sep 2004 US
Continuations (2)
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Parent 11324520 Jan 2006 US
Child 12644178 US
Parent 11120080 May 2005 US
Child 11324520 US