Finger rehabilitation tool

Abstract

To provide a finger rehabilitation tool allowing the patient's contracted fingers to be stretched out to a wider open state or to a state where the fingers are warped further posteriorly from the back of the hand.SOLUTION: A finger rehabilitation tool 1 includes a back-of-hand side part 10 having a first air chamber 18 and a palm side part 60 having a second air chamber 68. The back-of-hand side part 10 has a first part 48 positioned to face the back of a hand, and a second part 50 positioned to face the back of fingers, when the finger rehabilitation tool 1 is mounted on the hand. The palm side part 60 has a third part 86 positioned to face a palm, and a fourth part 88 positioned to face balls of the fingers, when the finger rehabilitation tool 1 is mounted on the hand. When air is supplied to the first air chamber 18, the first portion 48 expands more than the second portion 50. When air is supplied to the second air chamber 68, the fourth portion 88 expands more than the third portion 86.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to a hand and finger rehabilitation device for rehabilitating a contracted hand. [Background technology]

[0002] Conventionally, rehabilitation exercises have been performed to improve the function of limbs with diseases and disorders of the central nervous system, such as cerebrovascular disease, brain trauma, cerebral palsy, and spinal cord injury, as well as peripheral nerve disorders, and disorders of joints and muscles. These rehabilitation exercises are usually performed by doctors and physical therapists forcing the fingers of patients, whose joints have become stiff due to poor movement in a bent state, to open and close them. In addition, in order to reduce the burden on doctors and physical therapists, rehabilitation tools that automatically perform rehabilitation exercises for patients have also been developed (Patent Document 1, Patent Document 2, Patent Document 3).

[0003] The rehabilitation tool in Patent Document 1 is provided with a glove-shaped insertion and fixing part into which the entire hand is inserted or multiple finger insertion and fixing parts into which each finger is inserted, on top of a balloon-shaped main body. With this rehabilitation tool, the patient's fingers are inserted into the insertion and fixing part or finger insertion and fixing part, and compressed air is supplied to the balloon-shaped main body located on the palm side of the hand to open the patient's bent fingers.

[0004] The rehabilitation tool in Patent Document 2 is equipped with a cover containing an airtight bag, an insertion section for inserting fingers, and fixing members for fixing the palm and wrist. This rehabilitation tool fixes the patient's hand with the insertion section and fixing members, and then supplies compressed air to the bag located on the back of the hand to open the patient's bent fingers.

[0005] The rehabilitation tool of Patent Document 3 includes a band and an air bag attached thereto. In this rehabilitation tool, the band is fastened to the back of the hand with the air bag held between the palm and the fingers, and the patient's bent fingers are opened by supplying compressed air to the air bag. Patent Document 3 further discloses a rehabilitation tool that is attached to the fingers such that two air bags are disposed on the dorsal and ventral sides of the fingers, respectively. In this rehabilitation tool, the patient's bent fingers are opened by supplying compressed air to the two air bags. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 10-33604 [Patent Document 2] JP 2010-284451 A [Patent Document 3] Japanese Patent Application Publication No. 8-294522 Summary of the Invention [Problem to be solved by the invention]

[0007] In the rehabilitation of contracted fingers, when the degree of contracture is not so large from the beginning or when the fingers have opened to a certain extent, it is desirable to open the fingers as wide as possible, preferably to extend the fingers to a state where the fingers are bent further back from the back of the hand. However, in a configuration in which the air bag is arranged only on the palm side or the back side of the hand, the air bag is bent to a certain extent by the hand trying to return to the bent state, or a part of the hand is separated from the air bag, making it difficult to extend the fingers straight or to a state where the fingers are bent back to the back of the hand. Also, in the conventional technology in which the air bag is arranged only on the back and ventral sides of the fingers, it is difficult to fully extend the fingers, and the fingers cannot be extended relative to the back of the hand.

[0008] Therefore, the present invention aims to provide a hand and finger rehabilitation tool that enables the patient's contracted fingers to be stretched to a position where they can be opened wider or bent further back from the back of the hand. [Means for solving the problem]

[0009] That is, the present invention provides: A hand rehabilitation tool that is worn around the hand, A back side portion having a first air chamber; A palm portion fixed to the back portion and having a second air chamber; Equipped with The back-of-hand portion has a first portion positioned to face the back of the hand when the hand rehabilitation tool is worn on the hand, and a second portion positioned to face the back of the fingers of the hand, The palm side portion has a third portion positioned to face the palm when the hand rehabilitation tool is worn on the hand, and a fourth portion positioned to face the pads of the fingers of the hand, The hand and finger rehabilitation tool is provided such that, when air is supplied to the first air chamber, the first portion expands more than the second portion, and, when air is supplied to the second air chamber, the fourth portion expands more than the third portion.

[0010] In this hand and finger rehabilitation tool, the patient's fingers are stretched by being sandwiched between the back side part and the palm side part. Furthermore, the first part facing the back of the hand expands more than the second part facing the back of the fingers, and the fourth part facing the pads of the fingers expands more than the third part facing the palm. This allows the fingers to be spread apart more widely, or the fingers to be bent further back from the back of the hand, making it possible to more effectively rehabilitate the contracted hands of patients.

[0011] Also, the elastic member may include at least one of a first expansion limiting structure that limits the expansion of the second portion and a second expansion limiting structure that limits the expansion of the third portion.

[0012] moreover, Each of the first air chamber and the second air chamber is formed between two sheets of material joined to each other, At least one of the first expansion limiting structure and the second expansion limiting structure may have an expansion limiting member attached between the two sheet materials in the corresponding first or second air chamber and configured to limit the separation distance between the two sheet materials.

[0013] Furthermore, the expansion limiting member of at least one of the first expansion limiting structure and the second expansion limiting structure can be a tubular sheet material that is folded flat when the corresponding first air chamber or second air chamber is contracted and unfolds into a tubular shape when the corresponding first air chamber or second air chamber is expanded.

[0014] moreover, The first expansion limiting structure and the second expansion limiting structure are both provided, The cylindrical sheet material of the first expansion limiting structure is disposed so as to extend in the width direction of the hand within the first air chamber, The tubular sheet material of the second expansion limiting structure may be arranged so as to extend in the length direction of the hand, which is substantially perpendicular to the width direction of the hand, within the second air chamber.

[0015] Also, The back side portion and the palm side portion are formed separately, a first connecting structure connecting one side of the back side portion and one side of the palm side portion; a second connecting structure connecting the other side of the back side portion and the other side of the palm side portion; A wrist band is attached to one of the back side portion and the palm side portion of the hand, and is wrapped around the wrist when the hand rehabilitation tool is worn on the hand, so as to fix the one of the back side portion and the palm side portion of the hand to the hand; The above configuration may further include:

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a hand rehabilitation tool according to the present invention will be described with reference to the accompanying drawings. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing a state before the hand and finger rehabilitation tool according to a first embodiment of the present invention is worn. [Diagram 2] 2 is a diagram showing the outer surface of the hand rehabilitation tool of FIG. 1 on the back side of the hand. FIG. [Diagram 3] 2 is a diagram showing the inner surface of the hand rehabilitation tool of FIG. 1 on the back side of the hand. FIG. [Figure 4] 3 is a cross-sectional view taken along line AA in FIG. 2 showing the back of the hand in a contracted state and an inflated state. [Diagram 5] 2 is a diagram showing the outer surface of the palm side portion of the hand rehabilitation tool of FIG. 1. FIG. [Figure 6] 2 is a diagram showing the inner surface of the palm side portion of the hand rehabilitation tool of FIG. 1. FIG. [Figure 7] 6A and 6B are cross-sectional views of the palm side portion taken along line BB in FIG. 5 in a contracted state and an inflated state. [Figure 8] 1 is a first external view showing a state in which the hand rehabilitation tool is worn on a hand. [Figure 9] 2 is a second external view showing the hand rehabilitation tool of FIG. 1 worn on a hand. FIG. [Figure 10] 1. FIG. 4 is a third external view showing the hand rehabilitation tool of FIG. 1 worn on a hand. [Figure 11] 2 is a cross-sectional view of the hand rehabilitation tool of FIG. 1 in a state where the hand rehabilitation tool is worn on a hand. [Figure 12] FIG. 11 is a cross-sectional view of a hand rehabilitation tool according to a second embodiment of the present invention in an expanded state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] A hand rehabilitation tool 1 according to one embodiment of the present invention comprises a back side part 10 and a palm side part 60 which are formed as separate bodies and connected and fixed to each other, as shown in Fig. 1. The hand rehabilitation tool 1 is configured to be worn in a cylindrical shape around the hand as shown in Figs. 8 to 10.

[0019] As shown in Figs. 2 and 3, the back side portion 10 has a sheet-like body 12 formed by welding an outer sheet material 12a and an inner sheet material 12b of the same shape. The outer sheet material 12a and the inner sheet material 12b are welded at an outer peripheral welded portion 14 formed along the outer periphery and an inner welded portion 16 formed in a rectangular shape inside the outer peripheral welded portion 14. The sheet-like body 12 has a first air chamber 18 formed by the inner welded portion 16 between the outer sheet material 12a and the inner sheet material 12b. A tube 20 is inserted between the outer sheet material 12a and the inner sheet material 12b. The tube 20 is attached in a sealed manner by a tube welded portion 22 constituting a part of the inner welded portion 16. The tube 20 is also inserted into the first air chamber 18 and communicates with the first air chamber 18. The sheet-like body 12 further has a first connecting portion 24 that protrudes in a strip-like shape to the left as viewed in FIG. 2, a second connecting portion 26 and a third connecting portion 28 that protrude in a strip-like shape to the right, and a fourth connecting portion 30 that protrudes slightly between the second connecting portion 26 and the third connecting portion 28. As shown in FIG. 3, a hook-and-loop fastener 32, a hook-and-loop fastener 34, and a hook-and-loop fastener 36 are attached to the inner surfaces of the first connecting portion 24, the second connecting portion 26, and the third connecting portion 28, respectively. Another hook-and-loop fastener 40 is attached to the lower position of the sheet-like body 12, and a cloth wrist band 42 is attached to the right position as viewed in the figure. As shown in FIG. 3, a hook-and-loop fastener 44 is also attached to the inner side of the wrist band 42. A first snap button 46 is further attached to the sheet-like body 12.

[0020] The back-of-hand portion 10 has a first portion 48 located facing the back of the hand when the hand rehabilitation tool 1 is worn on the patient's hand, and a second portion 50 located facing the back of the fingers. The first portion 48 is a lower portion of the portion of the sheet-like body 12 where the first air chamber 18 is formed, and the second portion 50 is an upper portion of the portion of the sheet-like body 12 where the first air chamber 18 is formed.

[0021] As shown in FIG. 4, the back-of-hand portion 10 further includes a first expansion-limiting member 52 disposed in the first air chamber 18. The first expansion-limiting member 52 is a cylindrical sheet material formed by welding the upper and lower ends of two sheet materials 52a and 52b. The first expansion-limiting member 52 is disposed so as to extend cylindrically in the width direction of the hand (left-right direction as viewed in FIGS. 2 and 3) and is attached to the sheet-like body 12. The sheet material 52a of the first expansion-limiting member 52 is welded to the outer sheet material 12a of the sheet-like body 12 at a first oval welded portion 54, and the sheet material 52b of the first expansion-limiting member 52 is welded to the inner sheet material 12b of the sheet-like body 12 at a second oval welded portion 56.

[0022] The back-of-hand portion 10 is inflated and deflated by supplying compressed air to the first air chamber 18 or discharging air from the first air chamber 18 via the tube 20. When the back-of-hand portion 10 is in a deflated state as shown in FIG. 4(a), the first expansion limiting member 52 is folded flat. When the back-of-hand portion 10 is in an inflated state as shown in FIG. 4(b), the first expansion limiting member 52 unfolds into a cylindrical shape. At this time, in the second portion 50 to which the first expansion limiting member 52 is attached, the first expansion limiting member 52 limits the distance between the outer sheet material 12a and the inner sheet material 12b. On the other hand, the first portion 48 is not provided with such a structure for limiting the amount of expansion. Therefore, the first portion 48 is in a state in which it is inflated more than the second portion 50.

[0023] As shown in Figs. 5 and 6, the palm side portion 60 has a sheet-like main body 62 formed by welding an outer sheet material 62a and an inner sheet material 62b of the same shape. The outer sheet material 62a and the inner sheet material 62b are welded at an outer peripheral welded portion 64 formed along the outer periphery and an inner welded portion 66 formed in a square shape inside the outer peripheral welded portion 64. The sheet-like main body 62 has a second air chamber 68 formed by the inner welded portion 66 between the outer sheet material 62a and the inner sheet material 62b. A tube 70 is inserted between the outer sheet material 62a and the inner sheet material 62b. The tube 70 is attached in a sealed manner by a tube welded portion 72 constituting a part of the inner welded portion 66. The tube 70 is also inserted into the second air chamber 68 and communicates with the second air chamber 68. The sheet-like main body 62 further has a fifth connecting portion 74 that protrudes slightly to the left as viewed in Fig. 5. 5, a hook-and-loop fastener 76, a hook-and-loop fastener 78, and a hook-and-loop fastener 80 are attached to the outer surface of the sheet-like main body 62. A second snap button 84 is further attached to the sheet-like main body 62.

[0024] The palm side portion 60 has a third portion 86 located facing the palm when the hand rehabilitation tool 1 is worn on the patient's hand, and a fourth portion 88 located facing the pads of the fingers. The third portion 86 is a lower portion of the portion of the sheet-like body 62 in which the second air chamber 68 is formed, and the fourth portion 88 is an upper portion of the portion of the sheet-like body 62 in which the second air chamber 68 is formed.

[0025] As shown in FIG. 7, the palm side portion 60 further includes a second expansion limiting member 90 disposed in the second air chamber 68. The second expansion limiting member 90 is a cylindrical sheet material formed by welding the right and left ends of two sheet materials 90a, 90b. The second expansion limiting member 90 is disposed so as to extend cylindrically in the length direction of the hand (the up-down direction as viewed in FIGS. 5 and 6) that is substantially perpendicular to the width direction of the hand, and is attached to the sheet-like main body 62. The sheet material 90a of the second expansion limiting member 90 is welded to the outer sheet material 62a of the sheet-like main body 62 at a third oval welded portion 92, and the sheet material 90b of the second expansion limiting member 90 is welded to the inner sheet material 62b of the sheet-like main body 62 at a fourth oval welded portion 94.

[0026] The palm side portion 60 is inflated and deflated by supplying compressed air to the second air chamber 68 or discharging air from the second air chamber 68 via the tube 70. When the palm side portion 60 is in a deflated state as shown in FIG. 7(a), the second expansion limiting member 90 is folded in a flat shape. When the palm side portion 60 is in an inflated state as shown in FIG. 7(b), the second expansion limiting member 90 unfolds into a cylindrical shape. At this time, in the third portion 86 to which the second expansion limiting member 90 is attached, the second expansion limiting member 90 limits the distance between the outer sheet material 62a and the inner sheet material 62b. On the other hand, the fourth portion 88 is not provided with such a structure for limiting the amount of expansion. Therefore, the fourth portion 88 is in a state in which it is inflated more than the third portion 86.

[0027] As shown in Fig. 1, the back side portion 10 and the palm side portion 60 are connected by sewing the fourth connecting portion 30 of the back side portion 10 to the fifth connecting portion 74 of the palm side portion 60. The back side portion 10 and the palm side portion 60 are also connected at the upper and lower portions of the fourth connecting portion 30 and the fifth connecting portion 74 by attaching the hook-and-loop fastener 34 attached to the second connecting portion 26 of the back side portion 10 to the hook-and-loop fastener 78 of the palm side portion 60 and attaching the hook-and-loop fastener 36 attached to the third connecting portion 28 of the back side portion 10 to the hook-and-loop fastener 80 of the palm side portion 60. In this way, a connecting structure (first connecting structure) that connects one side of the back side portion 10 to one side of the palm side portion 60 is formed by sewing the fourth connecting portion 30 and the fifth connecting portion 74 provided on the back side portion 10 and the palm side portion 60 and the hook-and-loop fasteners 34, 36, 78, 80. At this time, the tube 20 of the back side portion 10 and the tube 70 of the palm side portion 60 are each made to extend outward from between the back side portion 10 and the palm side portion 60 .

[0028] When the hand rehabilitation tool 1 is worn on the patient's hand, as shown in Figs. 8 and 9, the back-side portion 10 is the back of the hand, and the palm-side portion 60 is the palm of the hand, and the first snap button 46 of the back-side portion 10 and the second snap button 84 of the palm-side portion 60 are fastened. Next, the hook-and-loop fastener 32 of the first connecting portion 24 of the back-side portion 10 is attached to the hook-and-loop fastener 76 of the palm-side portion 60. In this way, the first snap button 46, the second snap button 84, the hook-and-loop fastener 32, and the hook-and-loop fastener 76 provided on the back-side portion 10 and the palm-side portion 60 form a connecting structure (second connecting structure) that connects the other side portion of the back-side portion 10 (the side opposite to the one side portion) and the other side portion of the palm-side portion 60. Furthermore, wrist band 42 of back of hand portion 10 is wrapped around the wrist and hook-and-loop fastener 44 of wrist band 42 is attached to hook-and-loop fastener 40, thereby fixing back of hand portion 10 to the hand. With hand and finger rehabilitation tool 1 thus attached to the patient's hand, compressed air is supplied from tube 20 and tube 70 to first air chamber 18 and second air chamber 68, causing first air chamber 18 and second air chamber 68 to expand, and the contracted and bent fingers are straightened.

[0029] As described above, since the first expansion limiting member 52 is provided on the back-of-hand portion 10, the first portion 48 in contact with the back of the hand expands more than the second portion 50 in contact with the back of the fingers. Furthermore, since the second expansion limiting member 90 is provided on the palm-side portion 60, the fourth portion 88 in contact with the pads of the fingers expands more than the third portion 86 in contact with the palm. Therefore, when the first air chamber 18 and the second air chamber 68 are inflated, the back of the hand and the pads of the fingers are strongly pressed by the first portion 48 and the fourth portion 88, which expand greatly. Therefore, as shown in FIG. 11, the patient's hand is sandwiched between the inflated back-of-hand portion 10 and the palm-side portion 60, and the fingers are spread widely and almost straight, and are deployed so as to be slightly curved backward with respect to the back of the hand.

[0030] In this way, in the hand rehabilitation tool 1, the entire hand is sandwiched between the back side part 10 and the palm side part 60, so that the fingers are stretched. When worn, the first part 48 facing the back of the hand expands more than the second part 50 facing the back of the fingers, and the fourth part 88 facing the pads of the fingers expands more than the third part 86 facing the palm. This allows the fingers to open wider, and also allows the fingers to bend further backward from the back of the hand. This makes it possible to perform rehabilitation exercises for the hand of a contracted patient more effectively.

[0031] As shown in FIG. 12, the hand rehabilitation tool 101 according to the second embodiment of the present invention does not have an expansion limiting structure such as the first expansion limiting member 52 and the second expansion limiting member 90 of the hand rehabilitation tool 1 according to the first embodiment. Instead, the hand rehabilitation tool 101 has a first additional air bag 196 in the first portion 148 of the back-of-hand portion 110, and a second additional air bag 198 in the fourth portion 188 of the palm-side portion 160. The first additional air bag 196 is attached to the inner sheet material 112b of the sheet-like body 112. The second additional air bag 198 is attached to the inner sheet material 162b of the sheet-like body 162. The internal space 118a of the sheet-like body 112 of the back-of-hand portion 110 and the internal space 118b of the first additional air bag 196 communicate with each other to form a first air chamber 118. Similarly, the internal space 168a of the sheet-like body 162 of the palm side portion 160 and the internal space 168b of the second additional air bag 198 communicate with each other to form the second air chamber 168. With this configuration, the first part 148 in contact with the back of the hand expands more than the second part 150 in contact with the back of the finger, and the fourth part 188 in contact with the pad of the finger expands more than the third part 186 in contact with the palm. This allows the fingers to open wider, as with the hand rehabilitation tool 1 according to the first embodiment, and also allows the fingers to be bent from the back of the hand to the rear side. This makes it possible to more effectively rehabilitate the hand of a patient with contracture.

[0032] Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the first expansion limiting structure for limiting the expansion of the second part of the back of the hand and the second expansion limiting structure for limiting the expansion of the third part of the palm of the hand are not limited to the structure shown in the first embodiment, and can be configured in various other ways. For example, the expansion of the second part and the third part can be limited by covering the periphery of the second part and the third part with a band or cloth bag that is shorter than the periphery and does not stretch much. In addition, the internal space of the additional air bag and the internal space of the sheet-like main body shown in the second embodiment may be separated into separate spaces, and tubes may be attached to each of them to expand and contract separately. In addition, the configurations of the first embodiment and the second embodiment may be combined with each other. That is, by having one of the back-side portion and the palm-side portion have an inflation limiting structure and the other have an additional air bag, the first portion positioned to face the back of the hand may expand more than the second portion positioned to face the backs of the fingers, and the fourth portion positioned to face the pads of the fingers may expand more than the third portion positioned to face the palm. Also, the back-side portion and the palm-side portion may be integrally formed with one sheet-like main body, in which case the first air chamber and the second air chamber may be communicated with each other so that air supplied from one tube is introduced into the first air chamber and the second air chamber. [Explanation of symbols]

[0033] 1 Hand rehabilitation equipment 10 Back of the hand 12 Sheet-shaped body 12a Outer sheet material 12b Inner sheet material 14 Outer weld area 16 Inner weld 18 First Air Chamber 20 Tubes 22 Tube Welding 24 1st connection part 26 2nd connection part 28 Third connection part 30 4th connection part 32 Hook and Loop Fastener 34 Hook and Loop Fastener 36 Hook and Loop Fastener 40 Hook and Loop Fastener 42 Wrist Band 44 Hook and Loop Fastener 46 First snap button 48 Part 1 50 Part 2 52 first expansion limiting member 52a Sheet material 52b Sheet material 54 First oval weld 56 Second oval weld 60 Palm side 62 Sheet-shaped body 62a Outer sheet material 62b Inner sheet material 64 Outer weld area 66 Inner weld 68 Second chamber 70 Tubes 72 Tube Welding 74 5th connection part 76 Hook and Loop Fastener 78 Hook and Loop Fastener 80 Hook and Loop Fastener 84 Second snap button 86 Part 3 88 Part 4 90 Second expansion limiting member 90a sheet material 90b Sheet material 92 Third oval weld 94 Fourth oval weld 101 Hand rehabilitation equipment 110 Back of hand 112 Sheet-shaped body 112b Inner sheet material 118 First Air Chamber 118a Interior space 118b Interior space 148 Part 1 150 Part 2 160 Palm side 162 Sheet-shaped body 162b Inner sheet material 168 Second Air Chamber 168a Interior space 168b Interior space 186 Part 3 188 Part 4 196 First additional air bag 198 Second Additional Air Bag

Claims

1. A hand rehabilitation tool that is worn around the hand, A back portion having a first air chamber; A palm portion fixed to the back portion and having a second air chamber; Equipped with The back-of-hand portion has a first portion positioned to face the back of the hand when the hand rehabilitation tool is worn on the hand, and a second portion positioned to face the back of the fingers of the hand, The palm side portion has a third portion positioned to face the palm when the hand rehabilitation tool is worn on the hand, and a fourth portion positioned to face the pads of the fingers of the hand, A hand and finger rehabilitation device in which the first portion expands more than the second portion when air is supplied to the first air chamber, and the fourth portion expands more than the third portion when air is supplied to the second air chamber.

2. The hand rehabilitation device according to claim 1 , comprising at least one of a first expansion limiting structure that limits the expansion of the second portion and a second expansion limiting structure that limits the expansion of the third portion.

3. Each of the first air chamber and the second air chamber is formed between two sheets of material joined to each other, The hand rehabilitation device of claim 2, wherein at least one of the first expansion limiting structure and the second expansion limiting structure has an expansion limiting member attached between the two sheet materials in the corresponding first air chamber or second air chamber and configured to limit the separation distance between the two sheet materials.

4. The hand rehabilitation device described in claim 3, wherein the expansion limiting member of at least one of the first expansion limiting structure and the second expansion limiting structure is a cylindrical sheet material that is folded flat when the corresponding first air chamber or second air chamber is contracted and unfolds into a cylindrical shape when the corresponding first air chamber or second air chamber is expanded.

5. The first expansion limiting structure and the second expansion limiting structure are both provided, The cylindrical sheet material of the first expansion limiting structure is disposed so as to extend in the width direction of the hand within the first air chamber, The hand rehabilitation tool according to claim 4, wherein the tubular sheet material of the second expansion limiting structure is arranged within the second air chamber so as to extend in the length direction of the hand, which is approximately perpendicular to the width direction of the hand.

6. The back side portion and the palm side portion are formed separately, a first connecting structure connecting one side of the back side portion and one side of the palm side portion; a second connecting structure connecting the other side of the back side portion and the other side of the palm side portion; A wrist band is attached to one of the back side portion and the palm side portion of the hand, and is wrapped around the wrist when the hand rehabilitation tool is worn on the hand, so as to fix the one of the back side portion and the palm side portion of the hand to the hand; The hand rehabilitation tool according to claim 1 , further comprising:

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