The present invention is directed to a system for transferring patients to and from a bed. Traditionally, this transfer has been a manual task performed by caregivers. Unfortunately, the risk of low back pain and musculoskeletal injury increases with the frequency of patient handling.
Rapid growth in the lift segment is outpacing pure demographics due to the epidemic shortage in the nursing workforce. Occupational Safety and Health Administration (OSHA) regulatory policies, and public concern for quality care in nursing homes and hospitals. Workplace injury as a result of lifting and moving patients is a major problem for the nursing industry, which is already in high demand. In fact, there are “safe-lifting” or “no-lift” policies in effect in nursing homes and hospitals across the country. OSHA has concluded that workers' injuries in nursing homes alone will reach 200,000 incidents, at a cost of almost $1 billion dollars, per year. Most of these injuries are directly related to patient transfers. Injuries to caregivers in the home care setting are estimated to be even higher due to the lack of proper equipment.
Proper use of patient lift products and systems has been shown to dramatically reduce workplace injury. Known products include hoist floor-based lifts and ceiling-based lifts. Floor-based lifts utilize a large “crane-line” lift unit that lifts the patient with a fabric sling. These products are outdated in design, difficult to use, can be unsafe, and do not serve as a solution to mobility (transportation) aid. Furthermore, many known institutional floor-based lifts cannot be stored in the patients' room due to their large size and, instead, are kept in distant locations and shared among all patients on the nursing unit or floor. This practice is not conducive to easy access and leads to underutilization. Ceiling-based lifts, using the same fabric slings, are becoming popular because of these storage issues, but are very expensive and require changes to infrastructure for installation. Other drawbacks include patient anxiety and patient safety issues.
A system for transferring medical patients utilizes the concept of creating a “hollow space” between the patient and the surface on which he or she is supported. A patient support material mounted to a rigid frame positioned about a bed or other hospital furniture can have openings extending laterally inward from at least one side of the patient support material and oriented substantially perpendicular to a line running from the head of the bed to the foot of the bed. The openings allow respective tines of a transport device, or straps from a patient transfer chair or device, to be inserted beneath a patient lying on the patient support material such that the tines or straps (or other elongated patient support/transfer components) can be lifted above through the openings and thus transfer the patient from the patient support material to the tines or straps of the patient transfer/transport device. Associated patient support chairs/devices, lift carts, lifts, carts, and other accessories can be used to lift and transport the patient.
Accordingly, it is a first aspect of the present invention to provide a device to assist in patient care including: a substantially rigid frame defining a patient-support area within an area bounded by the frame, the frame being adapted to be positioned with respect to a patient bed such that the patient support area substantially lies on a plane substantially parallel to a plane of an upper patient receiving surface of the bed; and a patient support material mounted to the frame so as to extend within the patient support area of the frame, the patient support material having at least two openings extending laterally inward from at least one side of the patient support material and oriented substantially perpendicular to a line running from the head of the bed to the foot of the bed; where the openings allow at least two respective elongated patient support/transfer components (such as, for example, tines of a lift cart or straps of a transfer chair/frame) of a transport device to be inserted beneath a patient lying on the patient support material such that the tines can be lifted above through the openings and thus transfer the patient from the patient support material to the elongated components.
In the first aspect, the frame can include two or more sections pivotally joined together along a hinged lateral axis. The patient support material can include two or more sections, each of which is mounted to one of the sections of the frame, and each section of the patient support material having at least one opening to allow a tine of the transport device to be inserted beneath the patient lying on the patient support material. In another detailed embodiment, the device further includes a lift device associated with the frame, the life device including an actuator that, upon actuation of the actuator, vertically lifts the frame such that the patient support material is elevated above the bed. The lift device can utilize at least one of manual, electric, hydraulic, and pneumatic application of force. In another detailed embodiment, the frame is elevated from the floor upon a wheeled base. The frame can include a downwardly facing gap that extends laterally across the bed, such that the frame can be translationally moved relative to the bed, at least a portion of the bed being cleared by the gap. In another detailed embodiment, the patient support material includes a plurality of straps extending laterally inward from at least one side of the sheet and oriented perpendicular to a line running from the head of the bed to the foot of the bed, the straps defining openings (slots in the exemplary embodiments) between adjacent straps. The openings can include a resilient material extending therein, the resilient material being joined to a relatively less resilient material forming the patient support material areas bounding adjacent openings. The resilient material can stretch downwardly to allow tines of the transport device to slide under the patient.
It is a second aspect of the present invention to provide a transport system to assist in patient care that includes: a patient support assembly including a patient support surface, where the patient support assembly includes at least two openings extending laterally inward from a side of the patient support surface; and a transport device. The transport device includes: (a) a base unit; (b) an extraction-frame unit joined to the base unit by a lifting mechanism adapted to move the extraction-frame unit translationally at least in a substantially vertical direction with respect to the base unit; and (c) at least two tines extending substantially horizontally from the extraction frame unit; where the tines can respectively fit into the at least two openings of the patient support assembly, thus allowing the tines to be inserted beneath a patient lying on the patient support surface such that the tines can be lifted above through the openings and thus transfer the patient from the patient support surface to the tines. In a more detailed embodiment, the base unit includes a plurality of wheels such that the base unit can be moved by rolling.
In an alternate detailed embodiment of the second aspect of the present invention, the extraction-frame unit includes a first torso-support frame portion and a second thigh-support frame portion, where the first and second frame portions are pivotally joined together along a hinged axis. In a further detailed embodiment, the second thigh-support frame portion includes at least two tines extending substantially horizontally from the second thigh-support frame portion, and the first torso-support frame portion includes one or more tines extending substantially horizontally from the first torso-support frame portion. Alternatively or in addition, the first torso-support frame portion can be pivoted between at least a partially vertical position such that the transport device can support the patient in a sitting position and an approximately horizontal position such the transport device can support the patient in a supine position. Alternatively or in addition, the transport system may include removable cushions that can be fitted to the first and second frame portions. Alternatively or in addition, the extraction-frame unit may include a third below-knee support frame portion pivotally joined to the second thigh-support frame portion along a hinged axis. This third below-knee support frame portion may include one or more substantially parallel tines extending substantially horizontally from the third below-knee support frame portion. Further, the third frame portion can be pivoted between at least a partially downward vertical position such that the transport device can support the patient in a sitting position and an approximately horizontal position such that the transport device can support the patient in a supine position.
In another alternate detailed embodiment of the second aspect of the present invention, the base unit includes at least one motor driven wheel, providing motorized movement of the base unit. In a further detailed embodiment, the transport device further includes user controls for controlling the motorized movement of the base unit. In yet a further detailed embodiment, the user controls are capable of being reoriented between a patient-control orientation and an assistant-control orientation.
In other detailed embodiments of the second aspect of the present invention, the transport device may include a weight detector that is adapted to measure the patient's weight; and/or the lifting mechanism of the transport device operates using at least one of manual, electric, hydraulic, and pneumatic application of force; and/or the transport system further includes at least one folding tine joined to the extraction-frame unit, selectively foldable into and out of a substantially horizontal patient support orientation; and/or at least one tine is selectively removable from the extraction-frame unit.
It is a third aspect of the present invention to provide a patient transfer system to assist in patient care that includes: a patient support assembly including a patient support surface, the patient support assembly including at least one laterally extending opening extending into the patient support surface; and a patient transfer device including a patient transfer frame, where the patient transfer frame includes an elongated transfer component (such as a support arm or strap) adapted to be inserted laterally into the opening beneath the patient. In a more detailed embodiment, the patient transfer frame includes: at least two side bars; at least one rigid cross bar joined to the side bars; at least one patient support strap adapted to be fastened to and extend between the side bars (the at least one strap providing the elongated transfer component); and at least one first coupling component provided on the patient transfer frame and adapted to be coupled to a first complementary coupling component of a first patient lift device. In yet a further detailed embodiment, the patient transfer system further includes a first patient lift device having: a base assembly, a beam joined to the base assembly and adapted to extend over a patient bed, the first complementary coupling component (adapted to be coupled to the first coupling component of the patient transfer frame) provided on the beam, and a lift mechanism implemented in the base unit for raising the beam; where the first patient lift device can be coupled to the patient transfer frame and used to lift the patient from the bed. In yet a further detailed embodiment, the first complementary coupling component is provided on a carriage riding on the beam. In yet a further detailed embodiment, the carriage is selectively translatable along the beam.
It is also within the scope of the third aspect of the present invention that the patient transfer frame includes a second coupling component adapted to be coupled to a second complimentary coupling component of a patient mobility device. With this, the patient transfer system may further include: a patient mobility device having a wheeled base unit and the second complimentary coupling component (adapted to be coupled to the second coupling component of the patient transfer frame), where the patient transfer frame rides on the wheeled base unit when coupled.
It is also within the scope of the third aspect of the present invention that the patient transfer frame includes at least two side bars; at least one rigid cross bar joined to the side bars; the elongated transfer component; and at least one first coupling component provided on the patient transfer frame and adapted to be coupled to a first complementary coupling component of a first patient lift device.
It is a fourth aspect of the present invention to provide a method of transporting a patient, comprising the steps of: (a) providing a substantially rigid frame defining a patient-support area within an area bounded by the frame, where the frame is adapted to be positioned with respect to a patient bed such that the patient support area substantially lies on a plane substantially parallel to a plane of an upper patient receiving surface of the bed; (b) providing a patient support material mounted to the frame so as to extend within the patient support area of the frame, where the patient support material has at least two openings extending laterally inward from at least one side of the patient support material and oriented substantially perpendicular to a line running from the head of the bed to the foot of the bed; (c) inserting at least two tines of the transport device into the openings in the patient support material beneath the patient lying on the patient support material; and (d) lifting the tines of the transport device through the openings such that the patient is supported by the tines and not by the patient support material. In a further detailed embodiment, the method further includes the steps of: (e) moving the transport device away from the bed such that the tines of the transport device are no longer positioned over the bed and the patient support material; and (f) moving the transport device to a desired location.
In an alternate detailed embodiment of the fourth aspect of the present invention, the method further includes the step, prior to the inserting step (c), of increasing the vertical distance between the patient support material and the bed such that the patient is supported by the patient support material and not by the bed. In another alternate detailed embodiment, the method further includes the step, prior to the inserting step (c), of moving the frame defining a patient-support area away from the bed such that the patient is supported by the patient support material and not by the bed.
It is a fifth aspect of the present invention to provide a method that includes the steps of: (a) providing a substantially rigid frame defining a patient-support area within an area bounded by the frame, where the frame is adapted to be positioned with respect to a patient bed such that the patient support area substantially lies on a plane substantially parallel to a plane of an upper patient receiving surface of the bed; (b) providing a patient support material mounted to the frame so as to extend within the patient support area of the frame, where the patient support material has at least one opening extending laterally inward from at least one side of the patient support material and oriented substantially perpendicular to a line running from the head of the bed to the foot of the bed; (c) placing a patient transfer frame about the patient's body, the patient transfer frame having at least two side bars, a rigid cross bar joined to the side bars, at least one strap adapted to extend laterally between and be fastened to the side bars, and at least one coupling component provided on the patient transfer frame and adapted to be coupled to a complementary coupling component of a patient transfer device; (d) routing the at least one strap through the at least one opening in the patient support material under the patient and fastening the strap laterally between the side bars of the patient transfer frame; (e) coupling the complementary coupling component of the first patient transfer device to the coupling component provide on the patient transfer frame; and (f) moving the patient and the patient transfer frame away from the bed using the first patient transfer device. In a more detailed embodiment, the method further includes the step, prior to the routing step (d), of increasing the vertical distance between the patient support material and the bed such that the patient is supported by the patient support material and not by the bed. Alternatively, the method further includes the step, prior to step (d), of moving the frame defining a patient-support area away from the bed such that the patient is supported by the patient support material and not by the bed.
These and other aspects and embodiments will be apparent from the following description, the accompanying drawings, and the appended claims.
The present invention is directed to a patient transfer system utilizing the concept of creating a “hollow space” between the patient and the surface on which he or she is supported and then extracting the patient using the hollow space to insert elongated patient support/transfer components such as tines of a lift cart, straps of an extraction device, etc. The patient support assembly of the present invention as depicted in the following exemplary embodiments is designed to: (a) enable the safe raising and lowering of a patient above his or her bed; (b) allow for insertion and removal of a mobile supporting expedient under the patient; and (c) when in the lowered position, provide a comfortable surface for the patient.
The patient transfer device of the present invention as depicted in the following exemplary embodiments is designed to: (a) enable the safe movement of patients requiring substantial assistance into and out of a bed and (b) provide a mobile, multi-position stretcher/chair on which patients can be transported.
Each segment 116, 118 of the upper frame 114 in this embodiment includes a pair of longitudinal bars 120 and at least one lateral cross bar 122 extending between the longitudinal bars 120 such that the longitudinal bars and cross bar provides substantially rigid structural support for the frame segment. Each segment 116, 118 in this embodiment also includes a plurality of lateral straps 106 (providing the patient support material 102) extending laterally between the longitudinal bars 120. The lateral straps 106 are releasably coupled in this embodiment to the longitudinal bars 120 at coupling points 108. A pair of risers 124 are provided for each strap 106 and are mounted to the longitudinal bars 120 approximate to the coupling points 108 so that the straps 106 extend up form the bars 120 over the first of the pair of risers 124 and across to the next of the pair of risers 124. The risers 124 thus extend the patient support material 102 above the longitudinal bars 120 of the upper frame 114.
The base frame 100 is positioned about a bed 105 and the patient support material 102 is attached using coupling points 108 before the patient is placed in the bed. When it becomes necessary to remove the patient from the bed, the elevator mechanisms 110 are used to raise the upper frame 114 and the attached patient support material 102 above the mattress creating a “hollow space” between the patient support material 102 and the bed 105. Alternatively, when the assembly 103 is used with a bed that can be raised and lowered, the upper frame 114 and patient support material 102 can remain stationary and the bed can be lowered to create the “hollow space” beneath the patient between the patient support material 102 and the bed 105.
The elevator mechanisms 110 can be operated hydraulically, pneumatically, by a motorized mechanism, manually, or by any other conventional mechanisms capable of raising and at least the lowering upper frame 114 as commonly known to those of ordinary skill in the art. In an alternative embodiment (not shown), the upper frame 114 is lifted above the bed by supplying compressed air to inflatable bladders positioned between the upper frame 114 and the mattress or between the existing bed and the upper frame 114. As the bladders inflate, they lift the upper frame 114 away from the mattress, thus creating the “hollow space” necessary for the tines of an extractor 200 as will be described below.
This embodiment of the assembly 103′ has the additional advantage that it can be rolled away from the patient's bed while the patient is supported by the upper frame 114, as shown in
The patient support material 102 shown in
The lift mechanisms 212 can be operated hydraulically, pneumatically, by a motorized mechanism, manually, or by any other means capable of raising and lowering frame 204 as will be well known and available to those of ordinary skill in the art.
Although the above-described figures show a patient being moved in a sitting position, the concept is equally applicable to moving patients who are lying flat. Such an application is useful in settings such as an intensive care unit or operating room where a patient is unable to assist with his or her own mobility and it may be desired to allow the patient to remain in a supine position.
In a further embodiment of the invention, the extractor 200, 200′, 200″ can include an integrated scale (not shown), such as stress gauges built into the lift mechanisms, for measuring and displaying the patient's weight.
In another embodiment of the patient support assembly 103″ shown in
In the present exemplary embodiment, the transfer frame assembly 300 includes back-support straps 306 and thigh-support straps 308 that extend laterally between and can be selectively fastened securely to the two side bars 302. As shown in
Once the patient has been strapped into the patient transfer frame assembly 300, the patient can be moved by a transport device that is coupled to the patient transfer frame assembly 300. In an exemplary embodiment, an extensible bed extractor can be used.
As seen in
Using the lift cart 400 as a transport device, the patient can be placed above a chair, wheelchair, commode, etc. onto which the he or she is to be deposited. The patient can be lowered using the lift cart's lift mechanisms 404. Once the patient has been lowered and is supported by a chair or other support device, the lift cart 400 can be backed up so that the tines 402 are removed from the receptacles 312 in the patient's transfer frame assembly 300.
While the exemplary embodiment utilizes tines 402 and receptacles 312 as the coupling mechanisms, it will be appreciated that alternate coupling mechanisms may be used and fall within the scope of the invention. It will be further appreciated that alternate lift carts and patient transfer devices disclosed in the '536 application can be used in place of the lift cart 400 described above. Some of such alternate lift carts may be motorized and include user controls for the motor and steering, where such user controls may be repositionable between and an attendee control orientation and a patient control orientation.
Having described the invention with reference to exemplary embodiments, it is to be understood that the invention is defined by the claims and it is not intended that any limitations or elements describing the exemplary embodiment set forth herein are to be incorporated into the meanings of the claims unless such limitations or elements are explicitly listed in the claims. Likewise, it is to be understood that it is not necessary to meet any or all of the identified advantages or objects of the invention disclosed herein in order to fall within the scope of any claims, since the invention is defined by the claims and since inherent and/or unforeseen advantages of the present invention may exist even though they may not have been explicitly discussed herein.
This application claims the priority of U.S. Provisional Patent Application Ser. No. 60/704,398, filed Aug. 1, 2005, the entire content of which is incorporated herein by reference.
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