Artificial limb with joints capable of being assembled and disassembled

Abstract

The utility model relates to the technical field of artificial limbs, and provides an artificial limb with a joint capable of being assembled and disassembled, which comprises a shank artificial limb, a thigh artificial limb assembly is arranged above the shank artificial limb, the thigh artificial limb assembly comprises a thigh artificial limb, and the bottom of the thigh artificial limb is fixedly connected with a supporting rod. A connecting sleeve perpendicular to the supporting rod is fixedly connected to the bottom of the supporting rod, a fixing shaft penetrating through the connecting sleeve is connected to the inner side of the connecting sleeve in a sleeving mode, the connecting sleeve is rotationally connected with the fixing shaft, clamping blocks are fixedly connected to the two ends of the fixing shaft, and a connecting structure used for connecting the artificial shank with the fixing shaft is arranged at the top of the artificial shank. During disassembly, the thigh artificial limb and the shank artificial limb can be separated to complete disassembly only by operating the positioning component to separate the clamping block, the whole process is simple to operate, and the thigh artificial limb and the shank artificial limb are convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial limbs, and in particular to an artificial limb with assembleable and disassembled joints. Background Art

[0002] A prosthesis is an artificial body specially designed, manufactured and assembled using engineering technology to compensate for amputees or incomplete limb loss. It is also called a "prosthetic limb". Its main function is to replace some of the functions of the lost limb, so that amputees can recover a certain degree of self-care and work ability. Leg prostheses include calf prostheses and thigh prostheses, and thigh prostheses are generally composed of a rotating connection between the thigh prosthesis and the calf prosthesis.

[0003] After searching, the Chinese patent publication number CN208756263U discloses "a thigh prosthesis, including a receiving cavity, a prosthetic foot and a connecting assembly for connecting the receiving cavity and the prosthetic foot, the receiving cavity is a thigh-shaped sleeve, the sleeve is a detachable double-layer composite structure, including a sleeve inner layer and a sleeve outer layer, the material of the sleeve inner layer is a flexible material with water absorption and water retention properties, and at least three receiving air bags are provided at the upper end of the sleeve inner layer, and the volume of the receiving air bags gradually increases from top to bottom."

[0004] The upper knee joint assembly and the lower knee joint assembly of the above patent are connected by a pair of connecting rods and connecting rod bolts, and are connected in a fixed manner. During the use of the prosthesis, the joints need to be continuously rotated. Therefore, after a long period of repeated rotation, the joints will be worn, resulting in inflexible joint rotation. Therefore, it is necessary to regularly maintain the joints of the prosthesis, so the thigh prosthesis and the calf prosthesis need to be disassembled. The above patent requires the removal of a large number of bolts during disassembly, which makes the process of disassembling the prosthetic joints very cumbersome. In view of this, the present invention proposes a prosthesis whose joints can be assembled and disassembled.

[0005] Utility Model

[0006] The utility model provides a prosthesis with joints that can be assembled and disassembled, which solves the problem of complicated disassembly process of prosthesis joints in the prior art.

[0007] The technical solution of the utility model is as follows: a prosthesis with assembled and disassembled joints, comprising a calf prosthesis, a thigh prosthesis assembly being arranged above the calf prosthesis, the thigh prosthesis assembly comprising a thigh prosthesis, the bottom of the thigh prosthesis being fixedly connected to a support rod, the bottom of the support rod being fixedly connected to a connecting sleeve arranged perpendicular to the support rod, the inner side of the connecting sleeve being sleeved with a fixed shaft passing through the connecting sleeve, the connecting sleeve being rotatably connected to the fixed shaft, both ends of the fixed shaft being fixedly connected to blocks, and the top of the calf prosthesis being provided with a connecting structure for connecting the calf prosthesis to the fixed shaft.

[0008] Preferably, the connecting structure includes a connecting seat, which is fixedly connected to the top of the calf prosthesis. Both ends of the connecting seat are provided with mounting grooves that slide with the connecting sleeve. The connecting sleeve is rotatably connected to the inner wall of the mounting groove. The outer sides of the two mounting grooves are provided with positioning components for fixing the card block.

[0009] Preferably, the positioning assembly includes a sliding rod that passes through the side wall of the connecting sleeve, the sliding rod is slidably connected to the side wall of the connecting sleeve, one end of the sliding rod is fixedly connected to a stop block, the other end of the sliding rod is fixedly connected to a connecting block, the top of the connecting block is fixedly connected to a socket, the socket is slidably matched with the corresponding socket, and the inner side of the socket is provided with a limiting member that interferes with the side wall of the socket to limit the separation of the socket from the socket.

[0010] Preferably, the positioning assembly further comprises a spring 1, which is sleeved on the slide rod 1, one end of the spring 1 abuts against the stop block, and the other end of the spring 1 abuts against the inner wall of the connecting seat.

[0011] Preferably, the spring 1 is in an initial state where the clamping seat contacts the side wall of the connecting seat.

[0012] Preferably, the limiting member includes a second slide rod, which passes through the side wall of the card seat and is slidably connected to the side wall of the card seat. One end of the second slide rod is fixedly connected to the limiting block, and the other end of the second slide rod is fixedly connected to the pull block.

[0013] Preferably, the inner wall of the card seat is provided with a receiving groove that slides with the limit block, and the slide rod 2 is provided with a spring 2, one end of the spring 2 contacts the limit block, and the other end of the spring 2 contacts the inner wall of the receiving groove.

[0014] Preferably, the diameter of the second spring is smaller than the diameter of the limit block, and the diameter of the first spring is smaller than the diameter of the stop block.

[0015] The working principle and beneficial effects of the utility model are as follows: during installation, the connecting sleeve at the bottom of the thigh prosthesis is matched with the installation groove, and then the blocks at both ends of the fixed shaft are fixed by the positioning component, so that the fixed shaft and the calf prosthesis are kept fixed, and the connecting sleeve is rotatably connected to the fixed shaft, so that the thigh prosthesis and the calf prosthesis are movably connected, thereby realizing the installation of the thigh prosthesis and the calf prosthesis joint. Similarly, during disassembly, it is only necessary to disengage the blocks by operating the positioning component, so that the thigh prosthesis and the calf prosthesis can be separated and dismantled. The whole process is simple to operate and convenient for maintenance of the thigh prosthesis and the calf prosthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic structural diagram of a prosthesis with assembleable and disassembled joints according to the present invention;

[0018] Figure 2 This is a schematic structural diagram of a thigh prosthesis assembly of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the connection structure of the present utility model;

[0020] Figure 4 This is a structural diagram of the positioning assembly of the present utility model;

[0021] Figure 5 It is a structural diagram of the limiting member of the utility model.

[0022] In the figure: 1. Thigh prosthesis assembly; 11. Thigh prosthesis; 12. Support rod; 13. Connecting sleeve; 14. Fixed shaft; 15. Clamping block; 2. Calf prosthesis; 3. Connecting structure; 31. Connecting seat; 32. Mounting slot; 33. Positioning assembly; 331. Slide bar 1; 332. Connecting block; 333. Clamping seat; 334. Stop block; 335. Spring 1; 336. Limiting piece; 3361. Slide bar 2; 3362. Limiting block; 3363. Pulling block; 3364. Receiving slot; 3365. Spring 2. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 5As shown, this embodiment proposes a prosthesis with assembled and disassembled joints, including a calf prosthesis 2, a thigh prosthesis assembly 1 is arranged above the calf prosthesis 2, and the thigh prosthesis assembly 1 includes a thigh prosthesis 11, the bottom of the thigh prosthesis 11 is fixedly connected to a support rod 12, the bottom of the support rod 12 is fixedly connected to a connecting sleeve 13 arranged perpendicular to the support rod 12, the inner side of the connecting sleeve 13 is sleeved with a fixed shaft 14 passing through the connecting sleeve 13, the connecting sleeve 13 is rotatably connected to the fixed shaft 14, and both ends of the fixed shaft 14 are fixedly connected to a clamping block 15, and the top of the calf prosthesis 2 is provided with a connecting structure 3 for movably connecting the calf prosthesis 2 to the fixed shaft 14, the connecting structure 3 includes a connecting seat 31, the connecting seat 31 is fixedly connected to the top of the calf prosthesis 2, and both ends of the connecting seat 31 are provided with mounting grooves 32 that slide with the connecting sleeve 13, the connecting sleeve 13 is rotatably connected to the inner wall of the mounting groove 32, and the outer sides of the two mounting grooves 32 are provided with positioning components 33 for fixing the clamping block 15.

[0025] During installation, the connecting sleeve 13 at the bottom of the thigh prosthesis 11 is matched with the installation groove 32, and then the blocks 15 at both ends of the fixed shaft 14 are fixed by the positioning component 33, so that the fixed shaft 14 and the calf prosthesis 2 remain fixed, and the connecting sleeve 13 is rotatably connected to the fixed shaft 14, so that the thigh prosthesis 11 and the calf prosthesis 2 are movably connected, thereby realizing the installation of the joint of the thigh prosthesis 11 and the calf prosthesis 2. Similarly, during disassembly, it is only necessary to operate the positioning component 33 to disengage the block 15, so that the thigh prosthesis 11 and the calf prosthesis 2 can be disengaged to complete the disassembly. The whole process is simple to operate and convenient for maintenance of the thigh prosthesis 11 and the calf prosthesis 2.

[0026] When the locking cam 333 is in the unlocking state, the locking cam 333 is locked and the locking cam 334 is unlocked, so that the locking cam 333 can be unlocked.

[0027] During installation, the connecting block 332 is pulled outward to separate the holder 333 from the side wall of the connecting seat 31. At this time, the spring 1 335 is compressed to accumulate potential energy, and then the connecting sleeve 13 can be matched with the installation groove 32. Then the spring 1 335 is released to release the potential energy, which makes the holder 333 move in the opposite direction and slide with the block 15, thereby realizing the installation of the thigh prosthesis 11 and the calf prosthesis 2 joints.

[0028] Furthermore, the limiting member 336 includes a second slide rod 3361, which passes through the side wall of the card seat 333 and is slidably connected to the side wall of the card seat 333. One end of the second slide rod 3361 is fixedly connected to the limiting block 3362, and the other end of the second slide rod 3361 is fixedly connected to the pull block 3363. The inner wall of the card seat 333 is provided with a receiving groove 3364 that slides with the limiting block 3362. A second spring 3365 is sleeved on the second slide rod 3361, and one end of the second spring 3365 is in conflict with the limiting block 3362, and the other end of the second spring 3365 is in conflict with the inner wall of the receiving groove 3364. The diameter of the second spring 3365 is smaller than the diameter of the limiting block 3362, and the diameter of the first spring 335 is smaller than the diameter of the stop block 334.

[0029] When the base 333 and the block 15 are slidingly engaged, the pull block 3363 is pulled outward to make the limit block 3362 fully engaged with the receiving slot 3364. At this time, the spring 2 3365 is compressed to accumulate potential energy, and then the base 333 and the block 15 are fully engaged. Then the pull block 3363 is released to release the potential energy of the spring 2 3365, which makes the limit block 3362 move in the opposite direction to the initial position. The limit block 3362 can limit the block 15 from disengaging from the base 333, which can greatly improve the overall stability.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A prosthesis with a joint that can be assembled and disassembled, including a lower leg prosthesis (2), characterized in that: A thigh prosthesis assembly (1) is provided above the calf prosthesis (2), and the thigh prosthesis assembly (1) includes a thigh prosthesis (11). The bottom of the thigh prosthesis (11) is fixedly connected to a support rod (12), and the bottom of the support rod (12) is fixedly connected to a connecting sleeve (13) arranged perpendicular to the support rod (12). The inner side of the connecting sleeve (13) is sleeved with a fixed shaft (14) passing through the connecting sleeve (13), and the connecting sleeve (13) is rotatably connected to the fixed shaft (14). Both ends of the fixed shaft (14) are fixedly connected to a clamping block (15). The top of the calf prosthesis (2) is provided with a connecting structure (3) for connecting the calf prosthesis (2) to the fixed shaft (14).

2. The prosthesis with assembleable and disassembleable joints according to claim 1, characterized in that: The connecting structure (3) includes a connecting seat (31), the connecting seat (31) is fixedly connected to the top of the calf prosthesis (2), both ends of the connecting seat (31) are provided with mounting grooves (32) that are slidably matched with the connecting sleeve (13), the connecting sleeve (13) is rotatably connected to the inner wall of the mounting groove (32), and the outer sides of the two mounting grooves (32) are provided with positioning components (33) for fixing the block (15).

3. The prosthesis with assembleable and disassembleable joints according to claim 2, characterized in that: The positioning assembly (33) includes a sliding rod (331) that passes through the side wall of the connecting sleeve (13), the sliding rod (331) is slidably connected to the side wall of the connecting sleeve (13), one end of the sliding rod (331) is fixedly connected to a stopper (334), the other end of the sliding rod (331) is fixedly connected to a connecting block (332), the top of the connecting block (332) is fixedly connected to a holder (333), the holder (333) is slidably matched with the corresponding holder (15), and a limiting member (336) is provided on the inner side of the holder (333) for limiting the separation of the holder (15) from the holder (333) by contacting the side wall of the holder (15).

4. The prosthesis with assembleable and disassembleable joints according to claim 3, characterized in that: The positioning assembly (33) further includes a spring (335), which is sleeved on the slide rod (331), one end of the spring (335) abuts against the stopper (334), and the other end of the spring (335) abuts against the inner wall of the connecting seat (31).

5. The prosthesis with assembleable and disassembleable joints according to claim 4, characterized in that: In the initial state, the spring 1 (335) contacts the side wall of the connecting seat (31) with the clamping seat (333).

6. The prosthesis with assembleable and disassembleable joints according to claim 4, characterized in that: The limiting member (336) includes a second sliding rod (3361), the second sliding rod (3361) passes through the side wall of the card seat (333), and the second sliding rod (3361) is slidably connected to the side wall of the card seat (333), one end of the second sliding rod (3361) is fixedly connected to the limiting block (3362), and the other end of the second sliding rod (3361) is fixedly connected to the pulling block (3363).

7. The prosthesis with assembleable and disassembleable joints according to claim 6, characterized in that: The inner wall of the holder (333) is provided with a receiving groove (3364) that slidably cooperates with the limit block (3362), and the second slide rod (3361) is provided with a second spring (3365), one end of the second spring (3365) is in contact with the limit block (3362), and the other end of the second spring (3365) is in contact with the inner wall of the receiving groove (3364).

8. The prosthesis with assembleable and disassembleable joints according to claim 7, characterized in that: The diameter of the second spring (3365) is smaller than the diameter of the limit block (3362), and the diameter of the first spring (335) is smaller than the diameter of the stop block (334).

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