Joint assist device

Abstract

The utility model provides a joint auxiliary device which is arranged on a first skeleton and a second skeleton and is provided with a first part, a second part and a clamping tenon. The first part is connected with the first skeleton and the second part and is provided with a connecting groove and a clamping hole. The second part is connected with the second skeleton and the first part and is provided with a connecting part and a clamping groove; the connecting part is movably arranged in the connecting groove. The clamping hole penetrates through the connecting groove, and the clamping groove penetrates through the connecting part. The clamping tenon is arranged in the clamping hole and the clamping groove in a penetrating mode, and the clamping tenon can drive the first part to move in the clamping groove. When the first part and the second part are subjected to axial force, the clamping tenon moves along the clamping groove, so that the first part and the second part move towards the direction far away from each other, and the distance between the first skeleton and the second skeleton is increased.

Description

Technical Field

[0001] The utility model relates to a device for assisting joint movement, in particular to an auxiliary device for arthritis. Background Art

[0002] A joint is a part where two bones are connected, enabling relative movement between the two bones or buffering the force between them. In a movable joint, the bone ends of the two bones each have cartilage. The joint capsule wraps the bone ends of the two bones to form a joint cavity, and there is synovial fluid in the joint cavity. Cartilage can buffer the connection between the two bones, and synovial fluid can lubricate between the cartilages to make the movement of the bones smooth.

[0003] Arthritis generally refers to any disease affecting joints, with numerous causes and types, such as rheumatoid arthritis, degenerative arthritis, gouty arthritis, etc. When cartilage wears out or the secretion of synovial fluid is abnormal, the joint will produce discomfort such as pain, swelling, heat, and stiffness, which are typical symptoms of arthritis.

[0004] When a patient suffers from finger arthritis, the cartilage of the finger joint wears out, causing the bones on both sides of the finger joint to rub against each other, resulting in discomfort and pain when the patient moves the finger. Therefore, treatment is required through methods such as medication, joint replacement, or assistance with aids.

[0005] The existing arthritis aids in the prior art have a first part and a second part, such as the patent with Taiwan, China patent number TW-I689297B. The first part is connected to the second part and can rotate relative to the second part, and the first part and the second part are respectively disposed on two bones. By means of the thread on the first part, the first part and the second part move away from each other, so that the two bones do not rub against each other when the joint bends. However, moving the first part and the second part away from each other by means of thread rotation will cause a relatively large wound, additionally causing discomfort to the patient. Summary of the Utility Model

[0006] The utility model provides a joint auxiliary device, which is used to be installed on a first bone and a second bone and can increase the distance between the first bone and the second bone.

[0007] The joint auxiliary device proposed by the utility model has:

[0008] A first part, which has:

[0009] A connection groove formed at one end of the first part; and

[0010] A clamping hole penetrating through the connection groove;

[0011] A second part, one end of which is connected to the first part; the second part has:

[0012] A connecting part, which is formed at one end of the second part close to the first part, and the connecting part is movably arranged in the connecting groove of the first part; and

[0013] A clamping groove, which is formed and penetrates through the connecting part, and the position of the clamping groove corresponds to the clamping hole of the first part; and

[0014] A tenon, which penetrates through the clamping hole of the first part and the clamping groove of the second part, and the tenon can move in the clamping groove; the second part can rotate relative to the first part with the tenon as the axis.

[0015] The advantages of the present utility model are that when the first part and the second part of the joint auxiliary device are axially stressed, the tenon drives the first part to move along the clamping groove, so that the first part and the second part move away from each other, thereby increasing the distance between the first bone and the second bone. In other words, the stress direction on the first part and the second part of the joint auxiliary device is the same as the movement direction of pulling apart the first bone and the second bone. Therefore, the actuation mode of the joint auxiliary device can alleviate the discomfort of the patient when installing the auxiliary device and can reduce the wound area.

[0016] For the joint auxiliary device as described above, wherein:

[0017] The connecting groove has:

[0018] A first section, which is formed at one end of the connecting groove close to the second part; and

[0019] A second section, which connects the first section; the width of the second section gradually decreases towards the first section, whereby a abutting step is formed between the first section and the second section;

[0020] The connecting part has:

[0021] A third section, which is formed at one end of the connecting part close to the first part; and

[0022] A fourth section, which connects the third section;

[0023] The third section can move from the second section to the first section; when the third section is located in the second section, the third section fits the second section, and the fourth section fits the first section; when the third section is located in the first section, the end of the connecting part away from the second bone abuts against the abutting step between the first section and the second section.

[0024] For the joint auxiliary device as described above, wherein:

[0025] The two wall surfaces of the first section of the connecting groove are parallel to each other;

[0026] The two side surfaces of the fourth section of the connecting part are parallel to each other;

[0027] The width of the first section of the connection groove is equal to the width of the fourth section of the connection portion.

[0028] The joint assistance device as described above, wherein:

[0029] The engaging hole of the first part penetrates through the first section of the connection groove;

[0030] The engaging groove of the second part penetrates through the third section and the fourth section of the connection portion.

[0031] The joint assistance device as described above, wherein:

[0032] The first part has a first threaded section, which is formed at an end far from the connection groove and can be used to connect the first bone;

[0033] The second part has a second threaded section, which is formed at an end far from the connection portion and can be used to connect the second bone.

[0034] The joint assistance device as described above, wherein the end of the connection portion of the second part close to the first part is arc-shaped. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional schematic diagram of the first form of the present utility model.

[0036] Figure 2 It is a three-dimensional schematic diagram of the second form of the present utility model.

[0037] Figure 3 It is an exploded schematic diagram of the present utility model.

[0038] Figure 4 It is a cross-sectional schematic diagram of the first form of the present utility model.

[0039] Figure 5 It is a cross-sectional schematic diagram of the second form of the present utility model.

[0040] Figure 6 It is an operation schematic diagram of the second form of the present utility model. DETAILED DESCRIPTION OF THE INVENTION

[0041] Please refer to Figures 1 to 3 . The present utility model provides a joint assistance device, which is used to be installed on a first bone (not shown in the figure) and a second bone (not shown in the figure). The joint assistance device has a first form and a second form, and has a first part 10, a second part 20 and a tenon 30.

[0042] Please refer to Figures 3 to 6。The first part 10 connects the first bone and the second part 20, and has a first threaded section 11, a connecting groove 12, and a locking hole 13. The first threaded section 11 and the connecting groove 12 extend from both ends of the first part 10 towards the middle. The first threaded section 11 connects to the first bone and enables the first part 10 to be fixed to the first bone. The connecting groove 12 is located at the end of the first part 10 away from the first bone and connects to the second part 20. The connecting groove 12 has a first section 121 and a second section 122. The first section 121 is formed at the end of the connecting groove 12 away from the first threaded section 11, and in this embodiment, the two wall surfaces of the first section 121 are parallel. The second section 122 is connected to the first section 121. One wall surface of the second section 122 is parallel to the wall surface of the first section 121, and the other wall surface of the second section 122 is not parallel to the wall surface of the first section 121. Thereby, the width of the second section 122 tapers towards the first section 121, and a abutting step 123 is formed between the first section 121 and the second section 122. Specifically, in this embodiment, the width of the end of the second section 122 away from the first section 121 is equal to the width of the first section 121, while the width of the end of the second section 122 connected to the first section 121 is narrower than the width of the first section 121, presenting a step difference between the first section 121 and the second section 122. The width of the first section 121 mentioned herein refers to the distance between the two wall surfaces of the first section 121, and the width of the second section 122 refers to the distance between the two wall surfaces of the second section 122. The locking hole 13 penetrates through the end of the first part 10 away from the first bone and passes through the connecting groove 12. In this embodiment, the locking hole 13 penetrates through the first section 121 of the connecting groove 12.

[0043] The second part 20 connects the second bone and the first part 10, and has a second threaded section 21, a connecting portion 22, and a locking groove 23. The second threaded section 21 and the connecting portion 22 extend from both ends of the second part 20 towards the middle. The second threaded section 21 connects to the second bone and enables the second part 20 to be fixed to the second bone. The connecting portion 22 is located at the end of the second part 20 away from the second bone and connects to the connecting groove 12 of the first part 10. The connecting portion 22 has a third section 221 and a fourth section 222. The third section 221 is formed at the end of the connecting portion 22 away from the second bone, and the fourth section 222 is connected to the third section 221. The two wall surfaces of the fourth section 222 are parallel, and the thickness of the fourth section 222 is equal to the thickness of the first section 121 of the connecting groove 12. The thickness of the end of the third section 221 away from the fourth section 222 is equal to the thickness of the fourth section 222, while the thickness of the end of the third section 221 connected to the fourth section 222 is narrower than the thickness of the fourth section 222, presenting a step difference between the third section 221 and the fourth section 222. In other words, the third section 221 of the connecting portion 22 can fit against the second section 122 of the connecting groove 12, and the fourth section 222 of the connecting portion 22 can fit against the first section 121 of the connecting groove 12.

[0044] The engaging groove 23 is formed and runs through the connecting portion 22. In this embodiment, the engaging groove 23 runs through the third section 221 and the fourth section 222 of the connecting portion 22. The position of the engaging groove 23 on the second part 20 corresponds to the engaging hole 13 on the first part 10. The tenon 30 is inserted through the engaging hole 13 on the first part 10 and the engaging groove 23 on the second part 20, and the end of the connecting portion 22 of the second part 20 away from the second bone is arc-shaped. Thus, the first part 10 can rotate relative to the second part 20 with the tenon 30 as the axis. The two ends of the tenon 30 are engaged with the engaging hole 13, and the tenon 30 can move within the engaging groove 23 but cannot move relative to the engaging hole 13. When the tenon 30 moves within the engaging groove 23, the tenon 30 can drive the first part 10 to move relative to the second part 20. The two ends of the tenon 30 are spaced apart in the engaging hole 13 of the first part 10. Thus, when the connecting portion 22 passes through the abutting step 123 of the connecting groove 12, the connecting portion 22 can increase the distance between the two wall surfaces of the connecting groove 12, and further enable the first part 10 to move relative to the second part 20.

[0045] Please refer to Figure 1 and Figure 4 . When the joint assist device is in the first form, the tenon 30 is located at one end of the engaging groove 23 close to the fourth section 222. The third section 221 of the connecting portion 22 abuts against the second section 122 of the connecting groove 12, and the fourth section 222 of the connecting portion 22 abuts against the first section 121 of the connecting groove 12. At this time, the first part 10 and the second part 20 are on the same axis, and the first part 10 cannot rotate relative to the second part 20.

[0046] Please refer to Figure 2 , Figure 5 and Figure 6 . When the joint assist device is in the second form, the first part 10 and the second part 20 are axially pulled, and the tenon 30 is located at one end of the engaging groove 23 close to the third section 221. The fourth section 222 of the connecting portion 22 disengages from the connecting groove 12, and the third section 221 of the connecting portion 22 is located in the first section 121 of the connecting groove 12. At this time, the first part 10 and the second part 20 increase the distance between the first bone and the second bone, and the first part 10 can rotate relative to the second part 20, enabling the first bone and the second bone to make a bending motion. In addition, the end of the connecting portion 22 of the second part 20 away from the second bone abuts against the abutting step 123 between the first section 121 and the second section 122 of the connecting groove 12. Thus, when the first bone and the second bone are axially stressed, the joint assist device can remain in the second form to prevent the first bone and the second bone from colliding.

[0047] The advantages of the present utility model are that when the first part 10 and the second part 20 of the joint assisting device are axially stressed, the tenon 30 drives the first part 10 to move along the engaging groove 23, causing the first part 10 and the second part 20 to move away from each other, thereby increasing the distance between the first bone and the second bone. In other words, the stress direction on the first part 10 and the second part 20 of the joint assisting device is the same as the movement direction of separating the first bone and the second bone. Therefore, the actuation mode of the joint assisting device can alleviate the discomfort of the patient when installing the auxiliary device and can reduce the wound area.

[0048] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content without departing from the technical solution of the present utility model. However, as long as it does not depart from the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An articular assistance device, characterized in that, for connecting a first bone and a second bone; the joint assist device has: a first part, which has: a connecting groove formed at one end of the first part; and a locking hole penetrating through the connecting groove; a second part, one end of which is connected to the first part; the second part has: a connecting portion formed at one end of the second part close to the first part, and the connecting portion is movably disposed in the connecting groove of the first part; and a locking groove formed and penetrating through the connecting portion, and the locking groove corresponds to the locking hole of the first part in position; and a tenon penetrating through the locking hole of the first part and the locking groove of the second part, and the tenon can move within the locking groove; the first part can rotate relative to the second part with the tenon as the axis.

2. The joint assist device according to claim 1, wherein the connecting groove has: a first section formed at one end of the connecting groove close to the second part; and a second section connecting the first section; the width of the second section gradually tapers towards the first section, whereby a abutting step is formed between the first section and the second section; the connecting portion has: a third section formed at one end of the connecting portion close to the first part; and a fourth section connecting the third section; the third section can move from the second section to the first section; when the third section is located in the second section, the third section fits the second section, and the fourth section fits the first section; when the third section is located in the first section, one end of the connecting portion away from the second bone abuts against the abutting step between the first section and the second section.

3. The joint assistance device according to claim 2, wherein, Two wall surfaces of the first section of the connecting groove are parallel to each other; Two side surfaces of the fourth section of the connecting portion are parallel to each other; The width of the first section of the connecting groove is equal to the width of the fourth section of the connecting portion.

4. The joint assistance device according to claim 2, characterized in that, The locking hole of the first part penetrates through the first section of the connecting groove; The locking groove of the second part penetrates through the third section and the fourth section of the connecting portion.

5. The joint assistance device according to claim 1, wherein, The first part has a first threaded section formed at the end away from the connecting groove and can be used to connect the first bone; The second part has a second threaded section formed at the end away from the connecting portion and can be used to connect the second bone.

6. The joint assistance device according to any one of claims 1 to 5, characterized in that, One end of the connecting portion of the second part close to the first part is arc-shaped.

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