JP3911645B2 - Wrist joint orthosis - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a wrist joint holding device that is effective for various disorders belonging to carpal tunnel syndrome or other wrist joint disorders, further prevention of rheumatic deformation, radial nerve paralysis, and the like. .
[0002]
[Prior art]
Treatment of joint disorders by wearing a joint orthosis is nothing but preserving the joint position in an appropriate position according to individual symptoms. For example, the wrist joint is a joint that has been carefully adjusted by palm flexion, dorsiflexion, heel lateral flexion, shaku lateral flexion, or a combination thereof according to the purpose of the motion. Of course, these adjustment functions may also be hindered when a failure occurs, so that careful attention is required for prescription of the brace.
[0003]
Here, taking various examples of so-called carpal tunnel syndrome caused by the synovium proliferated by the synovial tendonitis of the flexor tendon in the carpal tunnel, it is adopted at this time. In many cases, the orthosis to be used is a hand dorsiflexion (slight dorsiflexion of 10 to 20 °). And there are two types of wrist joint orthosis used at this time, the support surface provided on the back side and the support surface provided on the palm side. In any case, since it is necessary to fix the distal side of the forearm bone and the hand (metacarpal bone or the like) in order to fix the movement fulcrum of the wrist joint, these are rotated by a belt or an alternative to be locked.
[0004]
[Problems to be solved by the invention]
However, the conventional wrist joint orthosis has the following drawbacks. First of all, the fact that the work of wearing a belt, which is mentioned as a drawback, is troublesome, and the use of a member that does not easily dry when wet, such as cloth or leather, has been a major cause of hindering long-term wearing. In particular, once it gets wet, it is difficult to dry, so it feels bad and it gets cold in winter and it is very bad.
[0005]
In addition, because it is composed of a combination of a hard member for fixing the affected part and a soft member such as a belt, the structure including the connection structure between the members is complicated and heavy, and it tends to be bulky. Many were expensive.
[0006]
[Means for Solving the Problems]
Therefore, the present inventors finally made the present invention as a result of intensive studies in view of the above points, and the feature thereof is that the angle of the wrist joint is fixed by fixing the distal side and the root side of the wrist joint, respectively. Is a device for holding a fixed angle, a hand-fixing portion having a C-shaped cross section that goes around the metacarpal bone from the index finger to the little finger from the dorsal side to the palm side, and a connecting portion extending from the dorsal portion to the anterior side of the radius And an ulna fixation part that spirally circulates the rib part from the front inner side toward the ulna posterior side.
[0007]
That is, according to the present invention, in order to hold the wrist joint at an appropriate angle (however, dorsiflexion of the hand), the hand (metacarpal bone, etc.) is fixed by winding it from top to bottom, while the distal side of the forearm is from bottom to top. It can be said that it is a brace that is fixed. In terms of structure, the wrist joint orthosis of the present invention is composed of three parts: a hand fixing part, an ulna fixation part, and a connecting part for connecting them. Another important feature is that the plastic plate is formed by bending the plastic plate.
[0008]
In the present specification, the terms “front”, “rear”, “inside”, “outside”, “periphery”, and “root” are used to describe each part of the body, or the shape of the present invention orthosis. These shall conform to the direction when a person stands upright in a natural state (the palm at this time faces the thigh) (see FIG. 3).
[0009]
The hand fixing portion refers to a portion that circulates from the back of the hand to the palm. However, as apparent from the C-shaped cross section, there is a gap in the palm portion. This gap is one that is deformed using the flexibility inherent in the plastic itself when crossing the finger joint at the time of wearing, and this gap distance is widened to make it easier to wear, It is also possible to make some adjustments according to the size of the hand.
[0010]
The ulna fixation unit has a structure that supports the distal side of the ulna radius from the inner side of the forearm to the outer side, as opposed to the case of the manual fixation unit. And if it thinks that the hand fixing | fixed part and the ulna fixation part are connected by the connection part, it will be easy to understand the structure of this invention orthosis. Of course, it goes without saying that the hand fixing portion, the ulna fixation portion, and the connecting portion are actually integrally molded products formed by curving a plastic plate, and are not formed by joining different members. The connecting portion is a portion that forms and holds the dorsiflexion of the wrist joint at an optimum angle, and is thus curved according to the dorsiflexion angle. The connecting portion is continuous with a portion corresponding to the inside of the radius of the ulna fixation portion that spirally turns from the front inner side of the radius toward the ulnar rear side. This is to prevent the connecting portion from hitting the projection at the end of the ulna (ulnar styloid process) when the appliance is worn. Accordingly, the orthosis of the present invention is symmetrical for the right hand and the left hand.
[0011]
The material may be any plastic as long as it has slight flexibility and sufficient shape retention. Further, this plastic may be further processed. For example, in order to improve the feeling of wearing by improving the compatibility with the skin, coating the silicon rubber on the entire surface or the surface touching the skin corresponds to this “processing”.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 shows a right hand brace as an example of a wrist joint brace 1 according to the present invention (hereinafter referred to as the brace 1 of the present invention). As is clear from the figure, the brace 1 of the present invention is an integral body that is curved everywhere. It is a molded product. If each part is divided into three parts, the hand fixing part 2, the ulna fixation part 3, and the connection part 4, for convenience, the hand fixing part 2 is the back of the hand (more specifically, the peripheral part of the middle finger bone of the four fingers excluding the thumb). A portion that wraps around and locks from the back side to the palm side along the shape, the ulna fixation portion 3 is a portion that locks the end portion of the ulna radius from the inside to the outside, and the connection portion 4 is outside the hand fixation portion 2. It can be said that it is a part which connects (back side) and the front side (thumb finger side) of the ulna fixation part 3.
[0013]
FIGS. 2A, 2B, and 2C schematically show how the device 1 of the present invention shown in FIG. 1 is actually worn on the right hand over time. As is apparent from the figure, the mounting is started by first inserting the four fingers excluding the thumb into the hand fixing unit 2 [FIG. In this state, the ulna fixation part 3 of the orthosis 1 of the present invention is on the dorsal side, and the insertion point 31 of the ulna fixation part 3 is open on the opposite side to the position of the radius T (and ulna). The radius T (and ulna) cannot be fitted and fixed.
[0014]
Subsequently, the wrist joint is bent and the radius T (and ulna) is moved to the opposite side of the orthosis 1 of the present invention. At this time, it is preferable to press the device 1 of the present invention in the direction opposite to the bending direction of the wrist joint with a vacant hand (the left hand in the case of this example) [FIG. In this state, the fitting location 31 of the ulna fixation part 3 is open to the radius T (and ulna) side.
[0015]
Then, the radius T (and the ulna) is fitted into the fitting location 31 of the ulna fixation part 3 to complete the mounting [(b) in FIG.
[0016]
Since the orthosis 1 of the present invention is an orthosis that is often used for mild hand joint disorders or for the prevention of such disorders, a situation in which the weight becomes a structure, shape and weight that hinders daily life operations. Should be avoided. In that respect, the orthosis of the present invention is a completely integrated molded product made of plastic, so there is no place where it is worn out for a long time. Further, for example, if transparent plastic is used, the appearance is not noticeable, and it is more suitable for wearing.
[0017]
【The invention's effect】
As described above, the wrist joint device according to the present invention is a device for maintaining the angle of the wrist joint at a constant angle by fixing the distal side and the root side of the wrist joint, respectively, from the dorsal side to the palm side. A hand-fixing portion having a C-shaped cross-section that circulates the metacarpal bone from the index finger to the little finger, a connecting portion extending from the back of the hand to the anterior side of the radius, and further, the rib portion from the inside of the anterior side toward the posterior side of the ulna The invention is characterized by being an integrally molded product made of a curved plastic plate, which is constituted by a ulna fixation portion that circulates in a spiral shape, and is a very advanced invention having various effects as described below.
[0018]
(1) Since a separate member for fixing the wrist joint, such as a belt, is unnecessary, the structure is simple, easy to clean, and hygienic to wear.
(2) Since there are no members such as belts that are difficult to dry once wetted with water, water work or the like can be performed while wearing the brace.
(3) Since the structure is simple, it can be provided at low cost.
(4) Since it is a lightweight and orthosis composed only of members along the surface of the hand, it does not hinder daily operations or going out.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an example of a wrist joint orthosis according to the present invention.
2 (a), (b) and (c) are all perspective views schematically showing the manner in which the device 1 of the present invention shown in FIG. 1 is actually attached to the right hand over time.
FIG. 3 is a schematic perspective view for explaining a phrase for indicating a direction.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wrist joint orthosis according to the present invention 2 Hand fixing part 3 Rib fixing part 31 Insertion point 4 Connecting part T Rib

Claims (1)

A brace that holds the wrist joint at a fixed angle by fixing the distal side and the root side of the wrist joint, and wraps around the metacarpal bone from the index finger to the little finger from the dorsal side to the palm side. Then, the C-shaped hand fixing portion that is separated from the back, the connecting portion that extends from the back of the hand to the front of the radius, and the flexure that spirals around the radius from the front side to the back of the ulna. A wrist joint orthosis formed of a curved plastic plate and configured by a bone fixing portion.

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