A joint replacement prosthesis with an inner flow channel heat dissipation structure

Abstract

The present invention discloses a joint replacement prosthesis with an inner flow channel heat dissipation structure, and relates to the technical field of replacement prostheses. The joint replacement prosthesis with an inner flow channel heat dissipation structure comprises a tibial prosthesis and a liquid supply tube, the side wall of the liquid supply tube is provided with a ring-shaped card groove, and the tibial prosthesis is provided with an inner flow channel, and the two ends of the inner flow channel are provided with sockets. The joint replacement prosthesis with an inner flow channel heat dissipation structure is manufactured by casting or 3D printing technology to manufacture a joint prosthesis with an inner flow channel. During the operation, a matching perfusion pump and sterile fluid are used to cool down to avoid the influence of high temperature and ensure the effect of the operation; when in use, it is convenient to install, fix and disassemble the liquid supply tube and the inner flow channel to ensure the sealing of the connection between the liquid supply tube and the inner flow channel. After use, the inner flow channel can be sealed and protected to ensure the use effect of the joint prosthesis.

Description

Technical Field

[0001] The invention relates to the technical field of replacement prostheses, in particular to a joint replacement prosthesis with an inner flow channel heat dissipation structure. Background Art

[0002] Joint replacement surgery is one of the important developments in modern medicine. It is used to treat serious joint diseases and improve patients' quality of life. After decades of development, current joint replacement surgery has made great progress in materials, prosthesis design, and surgical techniques, but there are still some problems that need to be overcome.

[0003] Knee replacement prostheses mainly include tibial prostheses, meniscus prostheses and femoral prostheses. The connection between the prosthesis and bone tissue is mainly divided into two ways: bone cement fixation and biological fixation. Bone cement fixation in joint replacement is a method of stabilizing the prosthesis in the bone. Bone cement is usually polymethyl methacrylate (PMMA). By mixing its liquid and powder, it forms a gel-like substance that can quickly solidify at the surgical site. Efficient fixation is achieved by applying bone cement to the gap between the bone and the prosthesis. Bone cement can not only provide good initial fixation strength, but also fill the bone defect area and reduce the risk of micro-motion and loosening of the prosthesis. One of the problems is the thermal damage caused by the heating of bone cement. Bone cement generates heat during the curing process, and its temperature can be very high. According to existing research and data, the core temperature of bone cement during curing can reach about 115°C, and its surface temperature can reach about 80°C. Under traditional circumstances, the temperature of bone cement in the body can also be as high as 62°C. Excessive temperature can cause thermal damage to bone tissue and kill local cells, and the subsequent inflammatory response may cause bone absorption, thereby increasing the chance of prosthesis loosening. Summary of the invention

[0004] The object of the present invention is to provide a joint replacement prosthesis with an inner flow channel heat dissipation structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a joint replacement prosthesis with an inner flow channel heat dissipation structure, comprising a tibial prosthesis and a liquid supply tube, the side wall of the liquid supply tube is provided with an annularly arranged card groove, and the tibial prosthesis is provided with an inner flow channel, both ends of the inner flow channel are provided with sockets, the end of the tibial prosthesis is provided with two symmetrically arranged mounting holes, and the sockets are communicated with the bottom of the mounting holes, each of the mounting holes is fixedly inserted with a disk, and the end of the disk is provided with a through hole, the end of the disk is fixedly connected to a plurality of arrayed fixed boxes, and the side walls of each fixed box are connected by a first moving mechanism. A moving block is connected, and the side wall of each moving block is connected to a rotating plate through a rotating mechanism, and the side wall of each rotating plate is fixedly connected to a fan-shaped plate, the fan-shaped plate includes an inclined surface, and the end of the disc is provided with a limiting mechanism for limiting the rotating plate, the other end of the disc is fixedly connected to an annular cover, and the inner side wall of the annular cover is provided with a first annular groove, an annular airbag is fixedly inserted in the first annular groove, and a second annular groove is provided at the end of the annular cover, the second annular groove is connected to an annular plate through a second moving mechanism, and the end of the disc is provided with an inflation mechanism for inflating the airbag.

[0006] Preferably, the inflation mechanism includes a sliding plate slidably connected in the fixed box, and the sliding plate is connected to the top of the fixed box through a first reset mechanism, the side wall of the fixed box is fixedly connected with an inflation tube, and the other end of the inflation tube is fixedly inserted in the side wall of the annular cover.

[0007] Preferably, the first reset mechanism comprises two symmetrically arranged fixing rods fixedly connected to the top of the sliding plate, the side walls of the fixing rods are sleeved with first springs, and the two ends of the first spring are respectively fixed to the sliding plate and the top of the fixing box.

[0008] Preferably, the first moving mechanism comprises two symmetrically arranged sleeves fixedly inserted at the bottom of the fixed box, and a sleeve rod is inserted in each sleeve, the upper end of the sleeve rod is fixed to the bottom of the sliding plate, and the lower end of the sleeve rod is fixed to the top of the moving block.

[0009] Preferably, the rotating mechanism comprises a connecting block fixedly connected to the side wall of the moving block, and the rotating plate is rotatably connected to the side wall of the moving block via a rotating shaft.

[0010] Preferably, the limiting mechanism includes a first limiting hole and a second limiting hole opened on the side wall of the rotating plate, and a limiting rod is inserted into the side wall of the disc, one end of the limiting rod is fixedly connected to the first connecting plate, and the first connecting plate is fixed to the side wall of the annular plate.

[0011] Preferably, the second moving mechanism includes a second connecting plate fixedly connected to the side wall of the annular plate, and the side wall of the second connecting plate is fixedly connected to the first push rod, and the other end of the first push rod passes through the end of the disc and is connected to the end of the disc through the second reset mechanism.

[0012] Preferably, the second reset mechanism comprises a pushing disk fixedly connected to the end of the first pushing rod, and a second spring is fixedly connected between the pushing disk and the disc.

[0013] Preferably, a telescopic cover is fixedly connected to the end of the pushing disk, and the other end of the telescopic cover is fixed to the side wall of the disk.

[0014] Preferably, a sealing ring is provided on the side wall of the annular cover that cooperates with the annular plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This joint replacement prosthesis with an internal flow channel heat dissipation structure is manufactured by casting or 3D printing technology. During the operation, a matching perfusion pump and sterile fluid are used to cool down to avoid the influence of high temperature and ensure the effect of the operation. When in use, it is convenient to install, fix and disassemble the liquid supply tube and the internal flow channel to ensure the sealing of the connection between the liquid supply tube and the internal flow channel. After use, the internal flow channel can be sealed and protected to ensure the use effect of the joint prosthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention;

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the fixing box in the present invention;

[0020] Figure 4 It is a partial cross-sectional structural schematic diagram of the annular cover and the annular plate in the present invention;

[0021] Figure 5 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 6 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0024] Figure 8 for Figure 4Schematic diagram of the enlarged structure at D in the middle;

[0025] Fig. 9 for Figure 7 Schematic diagram of the enlarged structure at E in the middle.

[0026] Figure: 1, tibial prosthesis; 2, rotating mechanism; 201, connecting block; 202, rotating shaft; 3, second moving mechanism; 301, first pushing rod; 302, second connecting plate; 4, second resetting mechanism; 401, pushing plate; 402, second spring; 5, limiting mechanism; 501, first limiting hole; 502, second limiting hole; 503, first connecting plate; 504, limiting rod; 6, first resetting mechanism; 601, fixing rod; 602, first spring; 7, first moving Mechanism; 701, sleeve; 702, sleeve rod; 8, inflation mechanism; 801, sliding plate; 802, inflation tube; 9, annular plate; 10, telescopic cover; 11, liquid supply pipe; 12, slot; 13, inner flow channel; 14, socket; 15, mounting hole; 16, disc; 17, through hole; 18, fixed box; 19, second annular groove; 20, moving block; 21, rotating plate; 22, fan-shaped plate; 2201, inclined plane; 23, annular cover; 24, first annular groove; 25, airbag. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 9The present invention provides a technical solution: a joint replacement prosthesis with an inner flow channel heat dissipation structure, comprising a tibial prosthesis 1 and a liquid supply tube 11, the side wall of the liquid supply tube 11 is provided with a ring-shaped card groove 12, and an inner flow channel 13 is provided in the tibial prosthesis 1, and sockets 14 are provided at both ends of the inner flow channel 13, and two symmetrically arranged mounting holes 15 are provided at the end of the tibial prosthesis 1, and the sockets 14 are communicated with the bottom of the mounting holes 15, and a disk 16 is fixedly inserted in each mounting hole 15, and a through hole 17 is provided at the end of the disk 16, and a plurality of array-arranged fixed boxes 18 are fixedly connected to the end of the disk 16, and the side wall of each fixed box 18 is connected to a moving block 20 through a first moving mechanism 7, and the side wall of each moving block 20 is connected to a rotating plate 21 through a rotating mechanism 2, and the side wall of each rotating plate 21 is fixedly connected to a fan-shaped plate 22, and the fan-shaped plate 22 includes an inclined surface 2201, and the end of the disk 16 is provided with a useful A limiting mechanism 5 is used to limit the rotating plate 21, and the other end of the disk 16 is fixedly connected to an annular cover 23, and a first annular groove 24 is provided on the inner side wall of the annular cover 23, and an annular air bag 25 is fixedly inserted in the first annular groove 24, and a second annular groove 19 is provided at the end of the annular cover 23, and an annular plate 9 is connected to the second annular groove 19 through a second moving mechanism 3, and an inflation mechanism 8 for inflating the air bag 25 is provided at the end of the disk 16. A joint prosthesis 1 with a flow channel is manufactured by casting or 3D printing technology. During the operation, a matching perfusion pump and sterile fluid are used to cool down to avoid the influence of high temperature and ensure the effect of the operation; when in use, it is convenient to install, fix and disassemble the liquid supply pipe 11 and the inner flow channel 13 to ensure the sealing of the connection between the liquid supply pipe 11 and the inner flow channel 13. After use, the inner flow channel 13 can be sealed and protected to ensure the use effect of the joint prosthesis 1.

[0029] The inflation mechanism 8 includes a sliding plate 801 slidably connected to the fixed box 18, and the sliding plate 801 is connected to the top of the fixed box 18 through the first reset mechanism 6. The side wall of the fixed box 18 is fixedly connected with an inflation tube 802, and the other end of the inflation tube 802 is fixedly inserted into the side wall of the annular cover 23. When it is necessary to connect the liquid supply tube 11 to the socket 14, the annular plate 9 is moved in a direction away from the annular cover 23 through the second moving mechanism. At the same time, when the annular plate 9 moves, the limiting mechanism 5 is unlocked. When the end of the liquid supply tube 11 abuts against the inclined surface 2201, the multiple fan-shaped plates 22 can be pushed to move away from each other. At the same time, the sliding plate 801 is pushed upward by the first moving mechanism 7, thereby squeezing the air in the fixed box 18, so that the air temporarily stored in the fixed box 18 enters the annular cover 23 through the inflation tube 802.

[0030] The first reset mechanism 6 includes two symmetrically arranged fixed rods 601 fixedly connected to the top of the sliding plate 801, and the side walls of the fixed rods 601 are sleeved with first springs 602, and the two ends of the first springs 602 are respectively fixed to the sliding plate 801 and the top of the fixed box 18, which guides and resets the movement of the sliding plate 801.

[0031] The first moving mechanism 7 includes two symmetrically arranged sleeves 701 fixedly inserted at the bottom of the fixed box 18, and a sleeve rod 702 is inserted in each sleeve 701, the upper end of the sleeve rod 702 is fixed to the bottom of the sliding plate 801, and the lower end of the sleeve rod 702 is fixed to the top of the moving block 20. When the end of the liquid supply pipe 11 abuts against the inclined surface 2201, it can push the multiple fan-shaped plates 22 to move away from each other. At the same time, the sleeve rod 702 moves upward along the sleeve 701 and pushes the sliding plate 801 to move upward.

[0032] The rotating mechanism 2 includes a connecting block 201 fixedly connected to the side wall of the moving block 20, and the rotating plate 21 is rotatably connected to the side wall of the moving block 20 through a rotating shaft 202, ensuring that the rotating plate 21 can rotate along the rotating shaft 202. There is a certain resistance between the rotating plate 21 and the rotating shaft 202, and it will not rotate without the action of external force.

[0033] The limiting mechanism 5 includes a first limiting hole 501 and a second limiting hole 502 opened on the side wall of the rotating plate 21, and a limiting rod 504 is inserted into the side wall of the disk 16, one end of the limiting rod 504 is fixedly connected to the first connecting plate 503, and the first connecting plate 503 is fixed to the side wall of the annular plate 9. When the annular plate 9 moves in a direction close to the annular cover 23, the first connecting plate 503 and the limiting rod 504 are driven to move and reset, and the limiting rod 504 is inserted into the first limiting hole 501 for limiting.

[0034] The second moving mechanism 3 includes a second connecting plate 302 fixedly connected to the side wall of the annular plate 9, and the side wall of the second connecting plate 302 is fixedly connected to the first push rod 301, the other end of the first push rod 301 passes through the end of the disk 16 and is connected to the end of the disk 16 through the second reset mechanism 4. When the first push rod 301 moves, the annular plate 9 is driven to move through the second connecting plate 302.

[0035] The second reset mechanism 4 includes a push plate 401 fixedly connected to the end of the first push rod 301 , and a second spring 402 is fixedly connected between the push plate 401 and the disc 16 to guide and reset the movement of the first push rod 301 .

[0036] The end of the push disk 401 is fixedly connected with a telescopic cover 10, which is made of medical silicone material, and the other end of the telescopic cover 10 is fixed to the side wall of the disk 16 to prevent the second spring 402 from being exposed.

[0037] The side walls of the annular cover 23 and the annular plate 9 that match each other are provided with sealing rings to ensure the sealing performance.

[0038] Working principle: When the liquid supply pipe 11 needs to be connected to the socket 14, the push plate 401 is pressed first, so that the first push rod 301 drives the annular plate 9 to move away from the annular cover 23, and at the same time, the second spring 402 is compressed. At the same time, when the annular plate 9 moves, the limiting rod 504 is driven to move through the first connecting plate 503, and the limiting rod 504 is withdrawn from the first limiting hole 501;

[0039] When the end of the liquid supply pipe 11 abuts against the inclined surface 2201, the plurality of sector plates 22 can be pushed to move away from each other. At the same time, the sleeve rod 702 moves upward along the sleeve 701, and at the same time, the sliding plate 801 can be pushed to move upward. The first spring 602 is compressed. When the sliding plate 801 moves upward, the air in the fixed box 18 can be squeezed, so that the air temporarily stored in the fixed box 18 enters the annular cover 23 through the inflation tube 802.

[0040] After the liquid supply pipe 11 is inserted into the socket 14, the fan-shaped plate 22 is aligned with the slot 12. At this time, under the action of the first spring 602, the fan-shaped plate 22 is inserted into the slot 12 for limiting. Then, the push plate 401 is released. At this time, under the action of the second spring 402, the annular plate 9 moves toward the direction close to the annular cover 23, and at the same time, the first connecting plate 503 and the limiting rod 504 are driven to move and reset, and the limiting rod 504 is inserted into the first limiting hole 501 for limiting, which can prevent the rotating plate 21 from rotating along the rotating shaft 202, thereby facilitating the fixing of the liquid supply pipe 11.

[0041] At the same time, the annular plate 9 can slide into the annular cover 23 under the action of the second spring 402, so as to squeeze the air in the annular cover 23, so that the airbag 25 is inflated and abuts against the side wall of the liquid supply tube 11, thereby ensuring the sealing of the connection, and also having a certain clamping and limiting effect, ensuring the effect of its use. After the liquid supply tube 11 is connected and fixed to the tibial prosthesis 1, the matching irrigation pump and sterile fluid are used to cool down to avoid the influence of high temperature and ensure the effect of the operation;

[0042] When it is necessary to disassemble the liquid supply tube 11, it is only necessary to press the push plate 401 again so that the limiting rod 504 withdraws from the first limiting hole 501. At this time, the limiting rod 504 no longer limits the rotating plate 21. At the same time, the annular plate 9 moves away from the annular cover 23, and the air in the airbag 25 can be sucked into the annular cover 23, so that the airbag 25 shrinks and resets. Then, the liquid supply tube 11 is pulled outward, and the rotating plate 21 can rotate counterclockwise under the action of the rotating shaft 202, so that the liquid supply tube 11 can be pulled out, so that the installation, fixing and disassembly of the liquid supply tube 11 and the tibial prosthesis 1 are more convenient and quick.

[0043] After the liquid supply tube 11 is pulled out, the sliding plate 801 can move downward and reset under the action of the first spring 602, so that the air in the annular cover 23 can be sucked into the fixed box 18 for temporary storage. Then, the rotating plate 21 is pushed to a vertical state, and the pushing plate 401 is released. At this time, the first pushing rod 301 is driven to move and reset under the action of the second spring 402, and the annular plate 9 is driven to move in the direction close to the annular cover 23, and then the limiting rod 504 is driven to move through the first connecting plate 503, and the limiting rod 504 is inserted into the second limiting hole 502 for limiting, so that the fan-shaped plate 22 can seal the through hole 17, which can prevent dust and other impurities from entering the inner flow channel 13, and then the inner flow channel 13 is sealed and protected to ensure its use effect.

Claims

1. A joint replacement prosthesis with an internal flow channel heat dissipation structure, comprising a tibial prosthesis (1) and a liquid supply tube (11), characterized in that: The side wall of the liquid supply pipe (11) is provided with an annular clamping groove (12), and the tibial prosthesis (1) is provided with an inner flow channel (13), and the two ends of the inner flow channel (13) are provided with sockets (14). The end of the tibial prosthesis (1) is provided with two symmetrically arranged mounting holes (15), and the sockets (14) are communicated with the bottom of the mounting holes (15). A disk (16) is fixedly inserted in each of the mounting holes (15), and a through hole (17) is provided at the end of the disk (16). The end of the disk (16) is fixedly connected to a plurality of fixed boxes (18) arranged in an array, and the side wall of each fixed box (18) is connected to a moving block (20) through a first moving mechanism (7), and the side wall of each moving block (20) is connected to a rotating plate through a rotating mechanism (2). (21), and the side walls of each rotating plate (21) are fixedly connected to a sector plate (22), the sector plate (22) comprising an inclined surface (2201), and a limiting mechanism (5) for limiting the rotating plate (21) is provided at the end of the disk (16), the other end of the disk (16) is fixedly connected to an annular cover (23), and the inner side wall of the annular cover (23) is provided with a first annular groove (24), an annular air bag (25) is fixedly inserted in the first annular groove (24), and a second annular groove (19) is provided at the end of the annular cover (23), an annular plate (9) is connected to the second annular groove (19) via a second moving mechanism (3), and an inflation mechanism (8) for inflating the air bag (25) is provided at the end of the disk (16); The inflation mechanism (8) comprises a sliding plate (801) slidably connected in the fixed box (18), and the sliding plate (801) is connected to the top of the fixed box (18) via a first reset mechanism (6); an inflation tube (802) is fixedly connected to the side wall of the fixed box (18), and the other end of the inflation tube (802) is fixedly inserted into the side wall of the annular cover (23); The first reset mechanism (6) comprises two symmetrically arranged fixing rods (601) fixedly connected to the top of the sliding plate (801), the side walls of the fixing rods (601) are sleeved with first springs (602), and the two ends of the first spring (602) are respectively fixed to the sliding plate (801) and the top of the fixing box (18); The first moving mechanism (7) comprises two symmetrically arranged sleeves (701) fixedly inserted at the bottom of the fixed box (18), and each sleeve (701) is inserted with a sleeve rod (702), the upper end of the sleeve rod (702) is fixed to the bottom of the sliding plate (801), and the lower end of the sleeve rod (702) is fixed to the top of the moving block (20); The limiting mechanism (5) comprises a first limiting hole (501) and a second limiting hole (502) formed on the side wall of the rotating plate (21), and a limiting rod (504) is inserted into the side wall of the disk (16), one end of the limiting rod (504) is fixedly connected to a first connecting plate (503), and the first connecting plate (503) is fixed to the side wall of the annular plate (9).

2. The joint replacement prosthesis with an inner flow channel heat dissipation structure according to claim 1, characterized in that: The rotating mechanism (2) comprises a connecting block (201) fixedly connected to the side wall of the moving block (20), and the rotating plate (21) is rotatably connected to the side wall of the moving block (20) via a rotating shaft (202).

3. The joint replacement prosthesis with an inner flow channel heat dissipation structure according to claim 1, characterized in that: The second moving mechanism (3) comprises a second connecting plate (302) fixedly connected to the side wall of the annular plate (9), and the side wall of the second connecting plate (302) is fixedly connected to the first pushing rod (301), and the other end of the first pushing rod (301) passes through the end of the disk (16) and is connected to the end of the disk (16) through the second resetting mechanism (4).

4. The joint replacement prosthesis with an inner flow channel heat dissipation structure according to claim 3, characterized in that: The second reset mechanism (4) comprises a pushing disk (401) fixedly connected to the end of the first pushing rod (301), and a second spring (402) is fixedly connected between the pushing disk (401) and the circular disk (16).

5. The joint replacement prosthesis with an inner flow channel heat dissipation structure according to claim 4, characterized in that: The end of the pushing disk (401) is fixedly connected to a telescopic cover (10), and the other end of the telescopic cover (10) is fixed to the side wall of the disc (16).

6. The joint replacement prosthesis with an inner flow channel heat dissipation structure according to claim 1, characterized in that: The side walls of the annular cover (23) and the annular plate (9) that match each other are provided with sealing rings.

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