Dorsal metacarpal bladder and restraint for a mechanical counter pressure glove

Information

  • Patent Grant
  • 6430751
  • Patent Number
    6,430,751
  • Date Filed
    Wednesday, February 28, 2001
    23 years ago
  • Date Issued
    Tuesday, August 13, 2002
    22 years ago
Abstract
A counter pressure glove system, that can be used in low pressure environments such as outer space, is provided. The system includes a pressure member, pressure inducing glove and a support member. The pressure member is disposed on the dorsal metacarpals and the palmar knuckles of a hand of a wearer. The pressure member applies a predetermined amount of pressure against the dorsal metacarpals and the palmar knuckles. The pressure inducing glove is donned on the hand. The pressure inducing glove applies a second predetermined pressure against the pressure member as well as against the exposed regions of the hand that are not covered by the pressure member. The support member is disposed on the pressure inducing glove and inhibits lateral and vertical displacement of the pressure member.
Description




BACKGROUND OF THE INVENTION




The present invention generally relates to counter pressure garments and, more particularly, to counter pressure garments, such as gloves, that can be used in low pressure environments.




Blood pressure in a human subject's body is slightly higher than the breathing pressure. In a standard atmospheric environment this breathing pressure is equal to the external gas pressure on the skin. In environments having very small or no gas pressure, such as the vacuum of the space or very high altitude, breathing is often enhanced or enabled only by positive pressure gas supply. In these cases, a subject's circulatory balance and respiration are of great concern.




The human body is covered with a soft tissue layer. The pressure of this layer is always equal to the external gas pressure on the skin. In normal atmospheric pressure, the tissue pressure in this layer matches the blood pressure of the circulatory system. In a low pressure environment with positive pressure breathing, however, since the pressure over the tissue layer is lower, the circulating blood may rush into the tissue layer and pool. If no preventive step has been taken, the veins, particularly the capillary ones in the tissue layer, are engorged with blood. As venous engorgement continues, measurable amounts of excess fluid can be forced through the capillary walls and accumulate in the tissue layer. The accumulation of fluid can result in formation of petechiae or edema and a decrease in the circulating blood.




In such low pressure environments, a counter pressure must be applied over the soft tissue layer to prevent the aforementioned problems. Usually, a counter pressure suit is employed to provide the necessary counter pressure on the tissue layer. In the context of outer space, one such suit is a full pressure suit. It is a gas filled pressure suit that is gas tight. The counter pressure in a full pressure suit is created with high pressure oxygen supplied into the suit. Thus, the gas pressure on the skin is in balance with the breathing pressure. Typically, these suits are made of a rigid but pressure restraining outer garment.




Another type of suit is generally referred to as a partial pressure suit, used, for example, in high-altitude fighter airplanes. In a partial pressure suit, an elastic or inelastic outer garment typically covers bladders that are filled with gas. The bladders with the garment can apply a constant counter pressure over the tissue. Partial pressure suits have their advantages. For example, if the partial pressure suit is developed with elastic material, the elastic material itself can provide counter pressure to the body. The partial pressure suits tend to be less bulky and thereby increasing mobility.




One important drawback with the partial pressure suit is that in order to apply a counter pressure over a body part, that body part must be perfectly circular in shape. But the body is not circular, and instead ovate, ellipsoidal and irregular. In this context, among other body parts, hands present an exceptional difficulty. A hand has a combination of concave, convex and circular areas as well as many joints and muscular areas that change shape during contraction and relaxation.




Specifically, the hand includes a palm having five fingers. The palm has a palmar surface that contacts an object being grasped, and a dorsal surface that is the upper surface of the hand. The palmar and dorsal surfaces are defined by the bones and soft tissue covering the bones. These bones consist of five metacarpals that extend from the wrist up to the base of the fingers or so called palmar knuckles. These five metacarpals are dished, creating a metacarpal arc in the central part of the palm. At the distal ends of the metacarpals, the fingers are attached. The index, middle, ring and little fingers each have three cylindrical phalanges, with the phalanx attached to the corresponding metacarpal being the proximal phalanx, the next phalanx being the middle and the fingertips being the distal phalanx. The thumb has only two cylindrical phalanges, a proximal and distal.




Due to its importance and its complex shape, the palm has been a center of attention in various research studies. It has been observed that if used for counter pressure purposes, the elastic material of a counter pressure glove tend to primarily press the outer edge of the palm and leaves the dorsal and palmar surfaces without adequate pressure. In an effort to address this problem, bladders with various shapes are placed on the palmar and dorsal surfaces before donning the glove. However, even such conventional bladders are large and stiff, and they are not able to eliminate fluid accumulation in the soft tissue in the metacarpal area. Their large size and stiffness decrease dexterity, tactility, and mobility. Further, their size and stiffness make donning and doffing of the elastic glove more difficult. More importantly, the size and the stiffness of the bladders fatigue the elastic glove during donning and doffing resulting in a defective glove.




As can be seen, there is a need for an improved counter pressure glove that provides adequate counter pressure to the palm of a hand and is easy to don and doff as well as increase dexterity, tactility, and mobility of the hand.




SUMMARY OF THE INVENTION




A counter pressure glove system comprises a pressure member, a pressure inducing glove and a support garment. The pressure member is disposed on a first region and a second region of a hand of a wearer. The pressure member applies a predetermined amount of pressure against the first and the second regions. The pressure inducing glove is donned on the hand having pressure members. The pressure inducing glove applies a second predetermined pressure against the pressure member as well as against the exposed regions of the hand that are not covered by the pressure member. The support garment is disposed on the pressure inducing glove. The support garment inhibits lateral and vertical displacement of the pressure member.




A pressure inducing garment for use with a counter pressure glove system comprises a first bladder disposed on a first region of a hand of a wearer, a second bladder disposed on a second region of the hand and a support garment for restraining the first and the second bladders. The first and second bladders are in fluid communication. The first and second bladders apply a predetermined pressure on the first and the second regions.











These and other features, aspects and advantages of the present invention will become better understood with reference to the following drawings, description and claims.




BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1A

is an elevated perspective view of the counter pressure glove system of the present invention;





FIG. 1B

is a cross sectional view of the counter pressure glove system shown in

FIG. 1A

;





FIGS. 2A-2B

are schematic views of a right hand showing the relative locations of the dorsal metacarpal and the palmar knuckles of the hand;





FIGS. 3A-3B

are schematic top and bottom views of a base glove of the present invention;





FIG. 4A

is an elevated perspective view of a pressure member of the present invention, wherein an upper bladder of the pressure member has been disposed on the dorsal metacarpals of the hand having the base glove shown in

FIGS. 3A-3B

;





FIG. 4B

is a bottom view of the pressure member shown in

FIG. 4A

, wherein a lower bladder of the pressure member has been disposed on the palmar knuckles of the hand;





FIG. 4C

is a schematic front view of the pressure member shown in

FIGS. 4A-4B

;





FIG. 4D

is another schematic view of the pressure member shown in

FIGS. 4A-4C

;





FIGS. 5A-5B

are schematic top and bottom views of a low friction glove of the present invention, wherein the low friction glove has been donned on the pressure member shown in

FIGS. 4A-4C

;





FIG. 5C

is a cross sectional view of the glove system of the present invention which is after the low friction glove shown in

FIGS. 5A-5B

has been donned;





FIGS. 6A-6B

are schematic top and bottom views of a pressure glove of the present invention, wherein the pressure glove has been donned on the low friction glove shown in

FIGS. 5A-5C

;





FIG. 6C

is a cross sectional view of the glove system of the present invention which is after the low friction glove shown in

FIGS. 6A-6B

has been donned;





FIG. 7A

is an elevated perspective view of the gauntlet of the present invention;





FIGS. 7B-7C

are top and bottom views of the gauntlet of the present invention, wherein the gauntlet has been donned on the pressure glove shown in

FIGS. 6A-6C

; and





FIG. 7D

is a cross sectional view of the glove system of the present invention which is after the gauntlet shown in

FIGS. 7A-7C

has been donned.











DETAILED DESCRIPTION OF THE INVENTION




Reference will now be made to drawings wherein like numerals refer to like parts throughout.

FIGS. 1A and 1B

illustrate a mechanical counter pressure glove system


100


of the present invention, which is shown as donned on a right hand


102


of a user (not shown). In this embodiment, the glove system


100


may initially comprise a comfort layer or base glove


104


that can be donned on the hand


102


. A pressure member or bladder


106


of the glove system


100


may be donned upon the base glove


104


and partially covering the base glove


104


. The pressure member may comprise an inlet port


108


and an inlet tube


110


connected to the inlet port


108


. The inlet tube


110


is connected to a pressure source (not shown) to inflate the pressure member


106


.




A slip layer or low friction base glove


112


of the glove system


100


may be donned on the pressure member


106


and the exposed areas of the comfort layer or base glove


104


. A power layer or pressure glove


114


of the glove system


100


may then be donned on the low friction glove


112


. The material of the low friction base glove


112


permits easy donning and doffing of the power layer or pressure glove


114


. A support member or gauntlet


116


of the glove system


100


may next be donned on the pressure glove


114


to prevent any displacement of the pressure member


106


, i.e., any lateral and vertical displacement away from the original position of the pressure member


106


. The gauntlet or support member


116


may partially cover the power layer or pressure glove


114


and comprises a number of fastening flaps


118


on top of the support member


116


. Referring to

FIG. 1A

, the mechanical counter pressure glove system


100


may be attached to a cuff section


120


of a space suit (not shown).




To explain the terminology regarding a human hand and its relationship to the subject invention,

FIGS. 2A and 2B

illustrate various sections of a right hand


102


having a palm


121


extending between the fingers


122


and the wrist


124


. The dorsal metacarpals


126


and palmar metacarpals


128


cover the top (

FIG. 2A

) and the bottom of the palm


121


(FIG.


2


B), respectively. The palm


121


is connected to the fingers


122


through knuckles


130


. The dorsal metacarpal side of the knuckles


130


is called dorsal knuckles


132


and the palmar metacarpal side of the knuckles


130


is called palmar knuckles


134


.




During an extra vehicular activity in outer space, or other environment having no or very low atmospheric pressure, the pressure exerted by the glove system


100


functions as a mechanical counter pressure which prevents soft tissue swelling caused by the pressure difference. The mechanical counter pressure is needed to counter balance the pressure difference between the arterial and venous blood vessels and the external pressure during an extra vehicular activity.




Providing mechanical counter pressure to the dorsal metacarpals


126


and the palmar knuckles


134


is very difficult using the prior art systems, such as foams or hard inserts. Despite the fact that the mobility of the hand is critical for extra vehicular activities, the prior art do not allow adequate motion of the hand and fingers. The dorsal metacarpals


126


and the palmar knuckles


134


are highly variable in surface shape, and far from being circular. When placed into a vacuum environment, the glove system


100


advantageously provides the necessary mechanical counter pressure across the hand


102


including the dorsal metacarpals


126


and the palmar knuckles


134


, while allowing full range of the motion of the hand.




In more specifically describing the present invention,

FIGS. 3A and 3B

show the comfort layer or base glove


104


of the glove system


100


. In this embodiment, the base glove


104


is shown donned on the hand


102


, which substantially conforms the shape of the hand


102


and makes direct contact with the soft tissue of the hand. The base glove


104


may be made of a stretchable material. Preferably, the base glove


104


is knitted out of a yarn which is mostly flat (non-twisted) nylon or polyester. The base glove


104


may also comprise small amount of elastomeric yarn. The comfort layer or base glove


104


provides comfort between the hand of the wearer and the other components of the system


100


. Further, the base glove


104


minimizes friction that may occur between the hand


102


and the subsequent components as the glove system


100


is donned. As will be described below, in this embodiment, the subsequent components are the pressure member


106


and the low friction glove


112


. Thus, the base glove allows the pressure member


106


and the low friction glove


112


to be donned easily.




As shown in

FIGS. 4A-4C

, after donning the comfort layer or base glove


104


, the bladder or pressure inducing member


106


may be donned on the base glove


104


. In this embodiment, when donned on the comfort layer


104


, the bladder


106


substantially covers the palmar knuckles


134


and the dorsal metacarpals


126


including dorsal knuckles


132


of the hand


102


(FIGS.


2


A and


2


B). As will be described more fully below, the power layer


114


of the glove system


100


provides the majority of the mechanical counter pressure on the hand. However, due to the irregular shape of the dorsal metacarpals


126


and the palmar knuckles


134


, the power layer


114


may not adequately supply a counter pressure over these particular areas of the hand (FIGS.


2


A-


2


B). This limitation of the power layer


114


may be compensated with the use of the pressure member


106


on such areas.




The pressure inducing member


106


may, in one preferred embodiment, be adapted to comprise two integrally connected inflatable components, namely, an upper bladder


136


and a lower bladder


138


. The upper bladder


136


covers the dorsal metacarpals


126


including the dorsal knuckles


132


while the lower bladder


138


covers the palmar knuckles


134


. When inflated with a pressure agent such as gas, liquid or a gel material, the upper and lower bladders


136


and


138


supply adequate mechanical counter pressure over the soft tissue covering the dorsal metacarpals


126


including the dorsal knuckles


132


and the palmar knuckles


134


while still providing full hand mobility. The pressure inducing member


106


may be a form-fitted member that is sized and dimensioned to fit a hand and conforms to the individual shape of the hand. In use, the pressure member


106


may be donned as inflated to a predetermined pressure level. Alternatively, the pressure member


106


may be inflated to the adequate counter pressure, for example, after either donning the pressure member


106


or donning the glove system


100


. During an extra vehicular activity in outer space, for example, the pressure exerted by the bladders


136


and


138


functions as a mechanical counter pressure which prevents soft tissue swelling caused by the pressure difference. As described above, the mechanical counter pressure is needed to counter balance the pressure difference between the arterial and venous blood vessels and the external pressure.




Referring to

FIGS. 4A-4C

, finger holes


140


allow the pressure member


106


to be placed over the hand


102


by inserting four fingers (the little, ring, middle and index fingers) throuhg the holes


140


. Tabs


142


extending between a distal end


144


of the upper bladder


136


and a distal end


146


of the lower bladder


138


function to define the finger openings


140


as well as to connect the upper and lower bladder


136


and


138


to each other. Tabs


142


also provide additional counter pressure in the webs between the fingers. Additionally, a first and second side sections


148


and


150


form the sides of the pressure member


106


, hence, further securing and aligning the pressure member


106


on the hand


102


. The inlet port


108


may be located at a proximal end


154


of the upper bladder


136


. The inlet port


108


may be connected to a pressure source


156


and a pressure gauge


160


through the inlet tube


110


. The pressure gauge


160


optimize the operating pressure of the pressure member


106


, thereby allowing a user to adjust the pressure level of the pressure member


106


. In one embodiment, the pressure source


156


may bo a rubber squeeze bulb to pump air into the upper and lower bladders


136


and


138


. The inlet port


108


may be, for example, formed as a pinch valve


109


or the like (see FIG.


4


D). Via the pinch valve


109


, the pressure member


106


may be inflated to an appropriate pressure range by the bulb


156


; after removing the bulb


156


, the pressure member


106


may be sealed by permanenthy sealing the pinch valve.




As previously mentioned, providing mechanical counter pressure to the dorsal metacarpals and the palmar knuckles is difficult using the prior art, as they are highly variable in surface shape. Mobility of the hand is critical, such as for extra vehicular activities in outer space. The prior art hand inserts or foams do not allow adequate motion of the hand and fingers. When placed into a vacuum environment, the pressure member


106


advantageously provides the necessary mechanical counter pressure across the dorsal metacarpals


126


and the palmar knuckles


134


, while allowing full range of the motion of the hand.




As shown in

FIG. 4D

, in another preferred embodiment, the pressure member


106


may be a single bladder or a bag that may be inflated using the inlet port


108


. As a single bladder, the pressure member


106


may comprise the upper and lower bladders


136


and


138


of the above embodiment. The upper bladder


136


may be in fluid communication with the lower bladder


138


so that air from the inlet port


108


inflates both of them. In order to secure pressure member


106


around the hand, the lower bladder


138


may be folded along a fold line


164


over the upper bladder


136


and the respective ends


166


and


168


are attached to each other. Accordingly, once the pressure member


106


is formed, the folded edge may correspond to the first section or edge


148


of the pressure member


106


(FIGS.


4


A-


4


C). Similarly, the attached edge may correspond to the second section or edge


150


of the pressure member


106


. In this embodiment, the omission of edges


148


,


150


better allows the pressure agent within the bladder


106


to move from one part to the other as the hand moves.




In the next manufacturing step, the tabs


142


are attached to the respective attachment locations


170


on the distal ends


144


and


146


of the bladders


136


and


138


. The pressure member


106


may preferably be made by cutting two material layers into the shape of the pressure member


106


as shown in FIG.


4


D. Then, the layers with matching shapes are put on top of each other and sealed along the peripheral edge


172


. In a preferred embodiment, a material for the pressure member


106


may be polyurethane such as that available from JASCO Products, Inc. The edge


172


may be sealed using Radio Frequency (RF) welding or other conventional methods using adhesives or heat sealing. RF welding may be used to attach the ends


166


and


168


as well as tabs


142


to the attachment locations


170


. The pressure member


106


of the present invention may withstand a gas pressure in the range of about 4 to 8 psid, preferably about 4 to 5 psid.




It is further within the scope of the present invention to replace one of the bladders


136


and


138


with an alternative form of counter pressure means such as foam inserts or the like. The tab members


142


or webbing are to align the pressure member


106


on the hand. An alternative embodiment may remove the tab members


142


permanently or replace them with other alignment means. Also, in an alternative embodiment, the inlet tube


110


may be not necessary if the pressure member is inflated to the required pressure level and is subsequently temporarily or permanently sealed at that pressure level.




As illustrated in

FIGS. 5A

to


5


C, after donning of the pressure member


106


on the comfort layer or base glove


104


, the slip layer or low friction glove


112


of the glove system


100


may be donned. The slip layer


112


covers the pressure member


106


and the exposed portions of the comfort layer


104


. The low friction glove


112


may comprise a body portion


174


defining an inner volume


176


to receive a hand of a wearer. The body portion


174


further defines a wrist portion


178


and a palm portion


180


to receive the wrist and palm, while finger portions


182


receive the fingers and thumb. The position of the pressure member


106


after the donning of the glove


112


is illustrated by the broken lines in

FIGS. 5A-5C

. The low friction glove


112


forms a slip layer of the glove system


100


so as to facilitate donning and doffing of the power layer or pressure glove


114


. If no slip layer


112


is utilized, the strong elastic material of the pressure glove


114


makes the donning process of the pressure glove


114


very difficult.




As will be described more fully below, the pressure glove


114


forms a power layer that provides the majority of the mechanical counter pressure on a hand. To be able to exert necessary mechanical counter pressure on the hand, the pressure glove


114


is made of a very strong elastic material. However, due to this property of the glove, it is very difficult to pull the pressure glove


114


over the pressure member


106


or the exposed portions of the base glove


104


. Without having the low friction glove


112


, if the pressure glove


114


is fully pulled to be donned, the pressure glove


114


may be fatigued from the strenuous pulling and friction, which impairs its mechanical counter pressure function.




In a preferred embodiment, the low friction glove


112


may be made of a low friction material, preferably PTFE (polytetrafluoroethlene), also referred to as Teflon™. In one embodiment, the low friction glove may be made of PTFE yarn that is seamlessly knitted into a glove. The PTFE yarn may be available from Dupont. The knitting process may be carried out using a knitting machine such as that available from Shima Seiki. The low friction glove


112


significantly lessens the fatigue that may be built up in the pressure glove


114


during the donning process. It is within the scope of the present invention that the low friction glove


112


may be manufactured using other manufacturing methods such as sewing disparate pieces made of PTFE material.




As shown in

FIGS. 6A and 6B

, the power layer or pressure inducing glove


114


may be donned on the low friction glove


112


. The pressure glove


114


forms a pressure or power layer of the glove system


100


. As discussed above, the elastic material of the pressure glove


114


may not apply an adequate counter pressure on the dorsal metacarpals


126


and the palmar knuckles


134


due to the relatively irregular shape of these areas of the hand


102


(FIGS.


2


A-


2


B). However, the combined use of the pressure member


106


and the pressure glove


114


within the glove system


100


of the present invention substantially minimize this problem.

FIG. 6C

shows how the pressure member


106


and the pressure glove


114


function together when the pressure member


106


is inflated.




Referring now to

FIGS. 6A

to


6


C, over the dorsal metacarpals


126


and the palmar knuckles


134


, the pressure glove


114


and the pressure member


106


together establish a mechanical counter pressure in the direction D substantially normal to the tissue of the hand. However, the mechanical counter pressure for the rest of the hand (such as the fingers, wrist and the rest of the palmar metacarpals


128


) may be provided only by the pressure glove


114


. The pressure glove


114


may be made of Globespun™ yarn, preferably


850


denier nylon covered Globespun™ yarn, that is seamlessly knitted into a glove. The


850


denier nylon covered Globespun™ yarn may be available from Dupont. The knitting process may be carried out using a knitting machine such as that available from Shima Seiki.




As shown in

FIGS. 7A-7D

, after donning the pressure glove


114


, the gauntlet or support member


116


of the glove system


100


may be donned on the pressure glove


114


. The support member


114


prevents pressure member


106


from moving laterally over the fingers or ballooning vertically when the system


100


is used during an extravehicular activity, for example. Further, the support member


116


restrains the pressure member


106


and keeps the pressure member thin and flexible when the hand is used. in the preferred embodiment, the support member


116


may be formed as a gauntlet having a gauntlet body


184


coverign the wrist and the palm of a wearer. The body


184


may have a top and bottom portions


186


and


188


connected together in a face to face relationship to define the gauntlet body


184


.




The top and bottom portions


186


and


188


may be configured and sewn together to define a front opening


190


to receive four fingers, a thumb opening


192


to receive the thumb, and a wrist opening


194


to insert the hand. The top and bottom portions


186


and


188


may preferably be made of a cloth comprising Nomex™ that may be available from ILC Dover. At the front opening


190


, webbing strips


196


extend between the top and bottom portions


186


and


188


. There are three webbing strips


196


spaced and dimensioned such that when the gauntlet is donned the webbing strips


196


are aligned between the four fingers as in the manner shown in

FIGS. 7A-7C

. As such, the webbing strips


196


apply some mechanical counter pressure between the fingers and further stabilize the gauntlet


116


. The webbing strips


196


may preferably be made of a flexible, high initial modulus reinforcement strips that have low flammability. A front section


198


of the top portion


186


may have pleats


199


that allow fingers to bend forward into a fist or for grasping objects. The pleats


199


may be formed from folded over Nomex™ material. Further, the top portion


186


has the fastening flaps


118


. Preferably, three fastening flaps extend across the top portion


186


of the gauntlet


116


. A hook portion


200


of a coacting hook and loop fastener is preferably mounted on one face of the fastening flaps


118


. The hook portion


200


may be selectively connected to the loop portion


202


that is mounted on selected locations on the top portion


186


. In this manner, using the fastening flaps


118


, the gauntlet


116


can be adjusted to the size of a user's hand. Such hook and loop fasteners are commercially available and sold under the brand name Velcro™.




Although, in the preferred embodiment, the gauntlet


116


is made of Nomex™, it is within the scope of this invention that any cloth with enough strength to withstand the force of the pressure member


106


may be used. Similarly, the Velcro™ fasteners may be replaced with other fasteners such as hooks, snaps, buttons or just ties. The pleats over the dorsal knuckles may be replaced with alternative systems. Such alternative systems may include the use of two pieces of cloth which pass over each other at the dorsal knuckle, or deep pockets that allow knuckle motion.




After the donning of the glove system


100


is completed, in one embodiment, the pressure member


106


may be inflated to the predetermined pressure level. This predetermined pressure level may be in the range of about 4 to 5.8 psid, depending on the supplied breathing pressure. In the next step the tube


110


may be separated from the pressure source and sealed.




It should be understood, of course, that the foregoing relates to preferred embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims.



Claims
  • 1. A counter pressure glove system, comprising:a pressure member disposed over a first region and a second region of a hand of a wearer, wherein the pressure member applies a first predetermined amount of pressure against the first and the second regions and wherein the first region of the hand is the dorsal metacarpals and the second region of the hand is the palmar knuckles; a pressure inducing glove that applies a second predetermined pressure against the pressure member as well as against regions of a hand of a wearer that are not covered by the pressure member; and a support member disposed over the pressure inducing glove, wherein the support member inhibits lateral and vertical displacement of the pressure member.
  • 2. The counter pressure glove system of claim 1, wherein the pressure member is an inflatable bladder.
  • 3. The counter pressure glove system of claim 2, wherein the inflatable bladder comprises a first bladder to cover the first region and a second bladder to cover the second region of the hand.
  • 4. The counter pressure glove system of claim 3, wherein the first and second bladders are in fluid communication.
  • 5. The counter pressure glove system of claim 3, wherein the inflatable bladder comprises webbing tabs between the first and second bladders, wherein the webbing tabs apply mechanical pressure between the fingers.
  • 6. The counter pressure glove system of claim 3, wherein the inflatable bladder is donned in an inflated state.
  • 7. The counter pressure glove system of claim 3, wherein the inflatable bladder is donned in a deflated state.
  • 8. The counter pressure glove system of claim 7, wherein the inflatable bladder is inflated after donning the support member.
  • 9. The counter pressure glove system of claim 2, wherein the inflatable bladder is made of polyurethane.
  • 10. The counter pressure glove system of claim 2, wherein the first predetermined pressure is in the range of 4 to 8 psid.
  • 11. The counter pressure glove system of claim 2, wherein the inflatable bladder includes an inlet port connected to a pressure source.
  • 12. The counter pressure glove system of claim 11, wherein the pressure source provides a pressure agent to inflate the inflatable bladder.
  • 13. The counter pressure glove system of claim 11, wherein the pressure agent is air.
  • 14. The counter pressure glove system of claim 13, wherein the pressure source is a squeeze bulb.
  • 15. The counter pressure glove system of claim 11, wherein the inlet port comprises a pinch valve.
  • 16. A counter pressure glove system, comprising:a pressure member disposed over a first region and a second region of a hand of a wearer, wherein the pressure member applies a first predetermined amount of pressure against the first and the second regions; a pressure inducing glove that applies a second predetermined pressure against the pressure member as well as against regions of a hand of a wearer that are not covered by the pressure member; and a support member disposed over the pressure inducing glove, wherein the support member inhibits lateral and vertical displacement of the pressure member and wherein the support member comprises a gauntlet.
  • 17. The counter pressure glove system of claim 16, wherein the gauntlet is made of a high strength cloth material.
  • 18. The counter pressure glove system of claim 16, wherein the gauntlet comprises an upper and lower portion.
  • 19. The counter pressure glove system of claim 18, wherein the upper portion comprises a pleated front portion wherein the pleated front portion allows fingers to bend forward for grasping objects.
  • 20. The counter pressure glove system of claim 18, wherein the upper portion comprises a fastening means to secure the gauntlet.
  • 21. The counter pressure glove system of claim 20, wherein the fastening means are hook and loop type fastening means.
  • 22. The counter pressure glove system of claim 16, wherein a front end of the gauntlet comprises webbing strips and wherein the webbing strips apply mechanical pressure between the fingers.
  • 23. A pressure inducing garment for use with a counter pressure glove system comprising:a first bladder disposed over a first region of a hand of a wearer; a second bladder disposed over a second region of the hand, wherein the first and second bladders are in fluid communication with each other, wherein the first and second bladders apply a predetermined pressure on the first and the second regions and wherein the first region of the hand comprises the dorsal metacarpals and the second region of the hand comprises the palmar knuckles; and a support garment for restraining the first and the second bladders, the support garment comprising a gauntlet.
  • 24. The pressure inducing garment of claim 23, further comprising a pressure inducing glove that applies a second predetermined pressure against the first and second bladders as well as against regions of a hand of a user that are not covered by the first and second bladders.
  • 25. The pressure inducing garment of claim 24, herein the pressure inducing glove is knitted from an elastic yarn.
  • 26. The pressure inducing garment of claim 23, the first and second bladders are made of polyurethane.
  • 27. The pressure inducing garment of claim 23, wherein the first bladder has an inlet port connected to a pressure source.
  • 28. The pressure inducing garment of claim 23, wherein the gauntlet comprises adjustable fastening members to secure the gauntlet on the hand.
  • 29. The pressure inducing garment of claim 28, wherein the adjustable fastening members are hook and loop type fastening members.
  • 30. A counter pressure glove system, comprising:a pressure member disposed over a first region and a second region of a hand of a wearer, wherein the pressure member comprises a first inflatable bladder that applies a first predetermined amount of pressure against the first region and a second inflatable bladder that applies a second predetermined amount of pressure against the second region and wherein the first region of the hand is the dorsal metacarpals and the second region of the hand is the palmar knuckles; a pressure inducing glove that applies a second predetermined pressure against the pressure member as well as against regions of a hand of a wearer that are not covered by the pressure member; and a support member disposed over the pressure inducing glove, wherein the support member inhibits lateral and vertical displacement of the pressure member and wherein the support member comprises a gauntlet comprising an upper portion and a lower portion, the upper portion comprising a pleated front portion wherein the pleated front portion allows fingers to bend forward for grasping objects and wherein a front end of the gauntlet comprises webbing strips which apply mechanical pressure between the fingers.
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3564614 Getchell et al. Feb 1971 A
5152740 Harkensee et al. Oct 1992 A
5257418 Jaskiewicz Nov 1993 A
5335370 Bassick et al. Aug 1994 A
5537688 Reynolds et al. Jul 1996 A
5598582 Andrews et al. Feb 1997 A
5603118 Solomon Feb 1997 A
6000059 Abts Dec 1999 A