Patent Application
20050096575
1. Field of the Invention
The present invention is related to the field of orthopedic braces, and more particularly, to orthopedic braces for supporting a wrist joint of a wearer.
2. Description of Related Art
Wrist injuries are relatively common orthopedic injuries that occur in a range of environments, such as a home, office or outdoor environment, and can have varying levels of severity. These levels of severity are routinely grouped into two categories, chronic and acute. Acute injuries occur most often due to sudden impacts that involve the large forces caused by an accident or from a collision during athletic activities. Such traumatic injuries to the wrist typically involve broken bones or sprains. Broken bones are usually treated using complete immobilization, while sprains often only require moderate immobilization for a period of weeks depending on the grade of the sprain. Establishing immobilization early after a sprain ensures that the injury does not evolve into a chronic injury.
Repetitive stresses to the wrist joint are the most common cause of chronic injuries. Repetitive stresses often occur in an office environment, e.g., typing, or during labor activities, e.g., assembly line work. Given the range of environments and types of injuries that can occur to the wrist, it is advantageous to have wrist braces that provide a range of flexibility and support for the wearer. In addition, due to the reoccurring, extended duration of chronic wrist injuries, a comfortable wrist brace is also desirable.
U.S. Pat. No. 5,728,059 to Wiesemann et al. (“Wiesemann”) discloses a wrist brace 10 including a sheet of flexible material 20 having proximal 26 and distal 28 edges, as well as a pair of opposing lateral edges 30, 40 extending between the proximal and distal edges. Two longitudinally extending pockets 50, 60 are fastened to the sheet 20 and have openings 52, 62 to receive a splint 80. The pockets 50, 60 also include hook or loop type fasteners thereon. Fasteners 46 are attached to the wrist brace 10 along a lateral edge 40 and have complementary hook or loop material thereon, such that the fasteners are capable of attaching to the pockets 50, 60. The Wiesemann patent is also described as being reversible from either the right or left hand (Col. 3, lines 12-15).
The sheet 20 disclosed in the Wiesemann patent is fabricated of flexible and elastic material. With the fasteners being attached to the elastic material, the wearer can adjust the wrist brace to the desired tension and support depending on the amount of immobilization that is required for a wearer's particular injury. Typically, more immobilization would be required for acute injuries, while less immobilization would be required for chronic injuries so that a wearer can still continue with normal activities while the wrist brace is being worn.
As shown in
The various material portions, the fasteners, and the splint provide the versatility to adjust the amount of immobilization depending on the type of injury involved. Wiesemann also discloses a brace that is easy to use given the configuration of the fasteners and flexible material. Despite these improvements, additional innovations in wrist braces to promote better treatment of wrist injuries are also desired.
It would be advantageous to provide a wrist brace that can be adjusted to provide support for a range of injuries, both chronic and acute. In addition, it would be advantageous to have a wrist brace that is easy to use. Finally, it would also be desirable to have a wrist brace that can be used on either a right or left wrist of a wearer.
The present invention addresses the above needs and achieves other advantages by providing a wrist brace of the present invention for supporting a wrist of the wearer. The wrist brace includes a sheet of flexible material that overlies and supports a wearer's wrist. Defined in the sheet is an opening between a pair of lateral edges, wherein the opening is sized to accommodate a thumb of a wearer. A thumb strap of the wrist brace is defined by a break extending between a distal edge of the sheet of material and the thumb opening. A fastener on one end of the thumb strap allows the thumb strap to be extended between a thumb and index finger of the wearer so as to secure the wrist brace. Optionally, the thumb opening can have a non-circular shape, such as a triangular shape, with an axis extending in the proximal-distal direction when the wrist brace is worn to promote a better fit around a base of the thumb.
In one embodiment, the wrist brace of the present invention includes a sheet of flexible material having a distal edge configured to extend at least partially around a hand of a wearer and a proximal edge configured to extend at least partially around a forearm of a wearer. A pair of opposing lateral edges of the sheet of material are configured to at least partially overlap each other so that the sheet of material extends around the wrist of the wearer. A lateral edge fastener is attached at one end to the sheet of material and is configured to extend over one of the lateral edges to attach at another end to the sheet of flexible material. This secures the sheet of material about the wrist.
A thumb opening is defined within the sheet of flexible material between the lateral edges and has a distal thumb opening edge proximate to the distal edge. In addition, a break is defined in the sheet of flexible material and extends between the distal edge of the material and the thumb opening. In this manner, the break, the distal edge, and the distal thumb opening edge define a thumb strap for supporting a thumb strap fastener. The thumb strap is configured to extend between a thumb and an index finger of the wearer, and the thumb strap fastener is configured to extend over the break and attach to the sheet of material so as to enclose the thumb of the wearer within the thumb opening.
Optionally, there may be additional lateral edge fasteners configured to extend over the lateral edge, wherein the lateral edge defines a plurality of radial portions extending inwardly on the sheet of material between the fasteners. The radial portions advantageously reduce bunching. In addition, the lateral edge fasteners may have rounded free ends and flared base ends secured to the sheet of material.
Preferably, the thumb opening defined in the sheet of material is non-circular. For example, the thumb opening may be generally elliptical in shape, wherein a major axis of the generally elliptical shape extends in a proximal-distal direction. As another option, the thumb opening may have a rounded, generally triangular shape. The generally triangular shape may include a base and an apex, wherein the base extends distally and the apex extends proximally to better fit the shape of the base of the wearer's thumb.
Further, the distal edge can be generally parallel to the distal thumb opening edge, such as when both the distal edge of the sheet of material and the distal edge of the thumb opening are distally. The distal edge may also extend continuously between the lateral edges when the fastener is attached to the sheet of flexible material.
Each of the fasteners of the wrist brace may include fastening elements, wherein the sheet of flexible material supports at least one complementary fastening element configured to allow attachment of the fastening elements of the fasteners. The wrist brace may further include two elongated patches of material that support the complementary fastening elements and are attached to the sheet of flexible material. The patches of material may be sufficiently long to extend from the proximal edge to the distal edge of the sheet of flexible material. Further, between the sheet of flexible material and the patches of material may be defined pockets that are sized to receive a splint. In one variation, the fasteners of the lateral edge straps and the thumb strap may attach to the same patch of material. In another variation, the fasteners of the lateral edge straps and the thumb strap may attach to different patches of material.
In yet another aspect, a plurality of undulations may be defined along one of the lateral edges, wherein the lateral edge fastener is attached at a peak of one of the undulations. An additional lateral edge fastener may be attached at an adjacent peak of the undulations so that a radial portion defined by the undulating lateral edge extends between the fasteners.
A wrist brace of another embodiment of the present invention includes a sheet of flexible material. The sheet of flexible material is configured to extend at least partially around a wrist of the wearer. A distal edge of the sheet of material is configured to extend at least partially around a hand of the wearer, while a proximal edge is configured to extend at least partially around an arm of the wearer. A pair of opposing lateral edges define curved portions that extend around a thumb of the wearer when the lateral edges are in a generally adjacent relationship. A pair of thumb straps of the wrist brace are configured to extend between the thumb and an index finger of the wearer. Each of the thumb straps has a first end attached to a respective one of the lateral edges. A top one of the thumb straps has a fastener on its second end and is configured to extend over a bottom one of the thumb straps to attach to the sheet of material using the fastener. Optionally, a second end of the bottom one of the thumb straps may be attached to the sheet of material near the first end of the top one of the thumb straps.
The wrist brace of the present invention has many advantages. The thumb hole allows insertion of the wearer's thumb and facilitates proper positioning before securing the sheet of material the wearer's wrist. This is done by avoiding the difficulty of trying to hold the sheet of material in place while at the same time trying to overlap the lateral edges and fix the fasteners in place. The non-circular shape of the thumb opening also promotes positioning and improved fit by having its long axis oriented in the proximal-distal direction where the base of the thumb is typically widest. The rounded triangular shape allows for a broader opening at the base of the thumb for a further improved fit.
The ability of the thumb strap to be removed and reattached via the fastener allows readjustment for maximum fit and comfort. Thus, the thumb strap and thumb hole act to position and secure the brace about a wearer's wrist. The break in the sheet of material ensures that when reattached, the thumb strap allows for a continuous distal edge of the sheet of material. The radial portions reduce bunching between the fasteners when attached to the sheet of material. In addition, the fasteners have a rounded free end, as well as a flared end attached to the lateral edge, thereby reducing catching on articles of clothing while at the same time facilitating better attachment. The configuration of the fasteners and elongated strips enables the fasteners to be positioned for securing the wrist brace when on either the wearer's right or left wrist.
Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.
Generally, a wrist brace 10 of the present invention includes a sheet of material 12 for extending around, and supporting, a wrist of a wearer, a plurality of fasteners 14 for securing the sheet of material about the wrist and a thumb strap 18 for extending between a thumb and index finger of the wearer so as to further secure the wrist brace, as is shown, for example, in
In one embodiment of the present invention, the sheet of material 12 has lateral edges 22, 23, distal edge 20, and proximal edge 24, as is shown in
The distal edge 20, so defined due to its more distal anatomical position on the wrist when worn, has a more varied shape than the relatively straight lateral edges with an outwardly curved portion adjacent the thumb strap 18 to facilitate accommodation of the thumb of the wearer. The proximal edge 24 (again defined by its relative anatomical position when worn) is relatively straight and parallel to the more linear portions of the distal edge 20.
When the wrist brace 10 is applied to a wearer's wrist, the distal edge 20 extends around the wearer's hand, the proximal edge 24 extends around the wearer's forearm, and one of the opposing lateral edges 23 overlaps the other one of the lateral edges 22 to extend around the wrist of the wearer, as illustrated in
The sheet 12 of flexible material is preferably constructed of a laminate material, wherein there is at least one fabric moisture wicking layer adjacent to the skin and the fabric moisture wicking layer is bonded to a polyurethane foam layer. Alternatively, two fabric layers may be bonded on opposite surfaces of the polyurethane layer. In addition, the moisture wicking layer may be an engineered fabric, or chemically treated, to provide moisture wicking properties.
It should be noted that the sheet of flexible material 12 could include any number or combination of elastic or inelastic materials, as long as it is capable of conforming to, and providing support for, the wrist of the wearer. Although the illustrated embodiment shows the sheet of material 12 as having distal 20, proximal 24, and lateral edges 22, 23 in a generally rectangular shape, the sheet of material of the present invention should not be considered limited to any particular number of edges with any particular shape. For example, the sheet 12 of flexible material could have a circular shape wherein the edges 20, 22, 23 and 24 are arc portions of an outer circular edge and are still capable of extending at least partially around the hand and forearm of a wearer and encircling the wrist of the wearer.
Optionally, the wrist brace 10 may include two patches of material 32 attached to a surface of the sheet of material 12 and defining pockets between the patches and the sheet of material, as shown, for example, in
Advantageously, use of two patches of material 32 to define two pockets in different locations allows the splint 35 to be switched for left and right handedness, as shown in the illustrated embodiments. However, a single one of the patches of material 32 may be employed for a wrist brace having only a single handed orientation.
As yet another option, a wrist brace of the present invention more directed to flexible support of a chronically injured wrist may not employ the splint 35 at all, making the patches of material 32 unnecessary, at least to the extent that they define pockets. This would most often be the case with chronic type injuries wherein greater freedom of motion may be desirable to allow for more wrist movement. As will be described in more detail below, each of the patches of material 32 may also support, or act as, a fastening element (e.g., loop material, one-half of a snap, etc.) that is complementary to and allows attachment of the fasteners 14.
The wrist brace 10 may also include slits 33 defined in the sheet of material 12 on the opposite side of the sheet from the patches of material 32, as shown in
The splint 35 for insertion into one of the pockets defined by the patches of material 32 has an elongate shape that includes a planar portion 11, an arc portion 13 and a crown portion 15, as is shown in
The longitudinal and lateral dimensions of the splint 35 are such that the splint extends substantially from the proximal edge 24 to the distal edge 20 under one of the patches of material 32. When the splint 35 is positioned within one of the pockets defined by the patches of material 32, the crown and arc portions 15, 13 align with the wearer's palm and wrist, respectively, to maintain the wearer's hand in extension relative to the wrist. The planar portion 11 extends along the wearer's forearm. Such a position is typically considered anatomically neutral so as to reduce strain on the wrist.
It should be noted that if employed, the splint 35 could have any number of shapes, sizes and materials (steel, wood, plastic, etc.) so as to accommodate different wrist sizes, as well as to adjust the desired amount of immobilization. For instance, the splint could be planar along its length, as opposed to the shaped splint of the illustrated embodiments.
The plurality of fasteners 14 are spaced apart from each other along one of the lateral edges, such as the lateral edge 23 of the embodiment illustrated in
In the various embodiments illustrated herein, the wrist brace 10 is shown as having two or three fasteners 14. However, the wrist brace 10 of the present invention could have one or more fasteners 14 depending upon the desired fit, and security, of the sheet of material 12 around the wrist of the wearer. Therefore, various numbers of fasteners may be employed and still be within the scope of the present invention. The sheet of material may also be shaped as a continuous tubular sleeve, and in which case no fasteners 14 are required.
Preferably the fasteners 14 are constructed of a flexible and stretchable material allowing them to conform to the shape of the sheet of material 12. However, the fasteners 14 may also be constructed of non-stretchable and non-flexible materials, especially if the sheet of material 12 is capable of conforming to the fasteners at their attachment locations. In addition, the fasteners 14 preferably have a width, height, or other combination of dimensions, that provide a surface area sufficiently large enough to accommodate the fastening elements 30.
An outer surface of the patches of material 32 each support fastening elements 16 that are complementary to the fastening elements 30 supported by the fasteners 14. In this manner, fastening elements 16 extend substantially from the proximal edge 24 of the sheet of material 12 to the distal edge 20 of the sheet of material, as shown in
Preferably, the fastening elements 30 located on an outer surface of the fasteners 14, as well as the fastening elements 16 located on the patches of material 32, are constructed of a complementary hook and loop material such as VELCRO®. However, the term “fastening element” as used herein denotes any type of chemical, mechanical or other fastener that allows connection of two separate components, such as snaps, hook and loop connectors, adhesives, snaps, buckles, etc. Notably, the fastening elements 30 (hooks) located on the outer surface of the fasteners 14 and the fastening elements 16 (loops) located on the patches of material 32 mate to and attach with one another when brought into contact. These fastening elements, therefore, are referred to herein as being complementary.
As another option, which was briefly mentioned above, the lateral edge 23 may include a plurality of undulations wherein each of the fasteners 14 is attached adjacent to, and extends over, one of the peaks, as is shown in
Defined within the sheet of material 12 between the lateral edges 22, 23 and adjacent the distal edge 20 is a thumb hole 28 for accommodating a thumb of the wearer, as shown in
Although the illustrated embodiments include two examples of non-circular shaped openings for the thumb hole 28 (i.e., the elliptical and triangular openings), other non-circular shaped openings could be employed depending on the desired fit around the base of the wearer's thumb, such as rectangular or square openings with rounded edges.
Partially defining the thumb hole 28 is a distal thumb opening edge 21 that is in proximity to the distal edge 20 of the sheet of material 12. Optionally, the distal thumb opening edge 21 may parallel the distal edge 20. For example, the distal thumb opening edge 21 arcs distally to trace the distally arcing shape of the distal edge 20 of the embodiment illustrated in
Regardless of the shape and relative positions of the distal thumb opening edge 21 and distal edge 20, these two edges, along with a break 38 in the sheet of material 12 extending between the edges 20, 21 can define the thumb strap 18. A fastener 39 supporting its own fastening element (such as the hook material described above) is attached to one free end of the thumb strap and is sufficiently long to extend over the break 38 onto the complementary fastening element supported by the adjacent one of the patches of material 32 on the sheet of material 12, as illustrated in
Similar to the fasteners 14 described above, the fastener 39 could be attached to the thumb strap 18 in several ways and still be within the scope of the present invention. Preferably the fastener 39 on the thumb strap 18 is attached using radio frequency (RF) welding so that no stitching is required. However, adhesives, stitching, staples, combinations thereof, or other methods and fixation devices could be used to secure the fastener 39 onto the free end of the thumb strap 18.
Advantageously, definition of the thumb strap 18 via the break 38 in the sheet of material 12 allows the free end of the thumb strap (because it has the same thickness and width) to tightly abut the rest of the sheet of material when the fastener 39 is attached to the patch of material 32. In this manner, the distal edge 20 of the sheet of material extends continuously between the lateral edges 22, 23 when the thumb strap is closed about the thumb of the wearer, as is shown in
Dimensionally, the thumb strap 18 is preferably configured to fit between the thumb and the index finger of the wearer. In addition, the thumb hole 28 is preferably capable of accommodating a wide range of thumb sizes. Generally, to fit a wide range of hand sizes, the thumb strap 18 can have a width of ¾ of an inch, but may also be within the range of ½ to 1½ inches in width. In addition, the thumb hole 28 preferably has a length of approximately 2¾ inches from its apex 37 to the center of the distal thumb opening edge 21, and a length of about 1¼ inches along the distal thumb opening edge. The apex to distal opening edge could also range from about 1½ to 3 inches, and the distal thumb opening edge from ¾ to 2 inches depending upon the size of the wearer and the desired tightness of fit.
During use, the wrist brace 10 is manipulated from an open position, such as is shown in
While supported from the thumb, the lateral edge 23 of the sheet of material 12 is extended over the other lateral edge 22 and around the wearer's arm and wrist. The remaining fasteners 14 are then extended over the lateral edge 23 and attached to the other one of the patches of material 32. Advantageously, attachment to different patches of material 32 by the fasteners 14 along the lateral edge 23 avoids overlap or conflict between the lateral edge fasteners and the fastener 39 at the end of the thumb strap 18.
Notably, the anatomical position of the fasteners 14 is switched when switching between a left handed (
Optionally, for additional support, the splint 35 can then be inserted into the pocket defined between the sheet of material 12 and one of the patches of material 32 positioned adjacent the volar and palmar side of the wrist and hand. For instance, the splint 35 can be inserted through the slit 33 in the sheet of material 12 underlying the patch of material near the proximal edge 24, as shown in
Another embodiment of the wrist brace 10 of the present invention is shown in
In addition, the wrist brace 10 may also include a sleeve 34 that is attached to an inner surface of the sheet 12, as shown in
In another embodiment of the wrist brace 10 of the present invention, the lateral edges 22, 23 include curved portions 25, 27 that are configured to extend around the base of the thumb when the wrist brace is wrapped around the wrist of a wearer, as shown in
In addition, a pair of opposing thumb straps 118, 218 extend from the lateral edges 22, 23. A bottom one of the thumb straps 118 extends from and is integrally part of the lateral edge 23 of the sheet of material 12 and attaches at the base of the other, top one of the thumb straps 218. Thumb strap 218 is also integrally formed with the sheet of material 12, extends from the other lateral edge 22 and includes the fastener 39 supported on its free end, as shown in
In another embodiment, the thumb strap 118 is not attached to the sheet of material 12, such that the thumb straps 118, 218 extend from the sheet of material but have free ends, as shown in
The present invention has many advantages. The thumb hole 28 allows insertion of the wearer's thumb and facilitates proper positioning before securing the sheet of material 12 the wearer's wrist. This is done by avoiding the difficulty of trying to hold the sheet of material in place while at the same time trying to overlap the lateral edges 22, 23 and fix the fasteners 14 in place. The non-circular shape of the thumb opening also promotes positioning and improved fit by having its long axis oriented in the proximal-distal direction where the base of the thumb is typically widest. The rounded triangular shape allows for a broader opening at the base of the thumb for a further improved fit.
The ability of the thumb strap 18 to be removed and reattached via the fastener 14 allows adjustment for maximum fit and comfort. Thus, the thumb strap 18 and thumb hole 28 act to position and secure the brace 10 about a wearer's wrist. The break 38 in the sheet of material 12 ensures that when the thumb strap 18 is reattached, the distal edge 20 of the sheet of material 12 is generally continuous.
The radial portions 26 of the lateral edge 23 reduce bunching between the fasteners 14 when the fasteners are attached to the sheet 12 of material. The flared base end of the fasteners 14 provide for a more secure attachment of the fasteners to the sheet of material 12.
Many modifications and other embodiments of the inventions set forth herein will come to mind to one skilled in the art to which these inventions pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
