Unicondylar femoral condyle holder

Abstract

The application relates to the technical field of medical devices, and discloses a single-knee femoral condyle holder which comprises a holder handle, a rotating driving rod, a clamping buckle and a holder head, the rotating driving rod is arranged in the holder handle and rotationally connected with the holder handle, the holder head comprises a connecting part and an arc-shaped positioning part, one end of the connecting part is in threaded connection with the rotating driving rod, and the arc-shaped positioning part has an arc-shaped surface matched with the shape of a single-knee femoral condyle; the single-knee femoral condyle holder provided by the application solves the problems that the existing single-knee femoral condyle is time-consuming and laborious to install and has surgical risks.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a single condyle femoral condyle holder. BACKGROUND

[0002] The following disadvantages exist in the installation of the existing single condyle femoral condyle:

[0003] 1. The single condyle femoral condyle prosthesis currently sold on the domestic market needs to be held by hand by the doctor during installation. Due to its irregular structure, the femoral condyle is easy to fall off during installation. In addition, the single condyle incision is small, and it is more laborious to hold the femoral condyle prosthesis.

[0004] 2. If the doctor's gloves are broken, the fingers are in direct contact with the femoral condyle, which can easily contaminate the prosthesis and increase the risk of surgery.

[0005] 3. The existing femoral condyle needs to be hit by a femoral condyle driver after installation, and the femoral condyle driver is easy to deviate when hitting. SUMMARY

[0006] The purpose of the present application is to provide a single condyle femoral condyle holder to solve at least one of the above problems in the prior art.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] A single condyle femoral condyle holder, comprising a holder handle, a rotating drive rod, a clamping buckle and a holder head, the rotating drive rod is arranged in the holder handle and the two are rotationally connected, the holder head comprises a connecting part and an arc-shaped positioning part, one end of the connecting part is threadedly connected with the rotating drive rod, and the arc-shaped positioning part has an arc-shaped surface matched with the shape of the single condyle femoral condyle.

[0009] The clamping buckle comprises a first clamping buckle and a second clamping buckle symmetrically arranged on both sides of the holder handle, the pressing end of the first clamping buckle and the second clamping buckle is elastically connected with the holder handle, the middle part of the first clamping buckle and the second clamping buckle is rotationally connected through a first pin shaft, the first pin shaft is slidingly connected with the connecting part, and both ends of the first pin shaft are fixedly connected with the holder handle, the clamping end of the first clamping buckle and the second clamping buckle has a hook part extending towards each other, and the two hook parts are respectively located on both sides of the length direction of the arc-shaped positioning part.

[0010] In the technical solution, when the rotating driving rod is rotated relative to the holder handle, the connecting part moves along the length direction of the holder handle due to the threaded connection between the one end of the connecting part and the rotating driving rod, the sliding connection between the first pin shaft and the connecting part, and the fixed connection between the two ends of the first pin shaft and the holder handle. When the rotating driving rod drives the connecting part to move towards the direction away from the hook part, the distance between the arc-shaped positioning part and the hook part is far, and the relative distance between the two hook parts is increased by pressing the elastic connection ends of the first and second clamping buckles. In this state, the single condyle femoral condyle is conveniently connected. Then, the elastic connection ends are loosened, and the hook parts of the first and second clamping buckles abut against the end surface of the single condyle femoral condyle under the action of the elastic force. Then, the single condyle femoral condyle is clamped and positioned by rotating the rotating driving rod and driving the connecting part to move towards the hook part, so that the arc-shaped surface of the arc-shaped positioning part abuts against the arc-shaped end surface of the single condyle femoral condyle. The angle of the clamping buckle opened by the femoral condyle holder by pressing the elastic connection ends of the first and second clamping buckles can be adjusted to ensure that the femoral condyle can be placed in the middle of the clamping buckle. The rotating driving rod is rotated to lock the head of the femoral condyle holder and fix the single condyle femoral condyle, so that the femoral condyle is held.

[0011] In addition, in the above structure, the clamping effect between the first and second clamping buckles is determined by the elastic force, and the distance between the arc-shaped positioning part and the hook part can be adaptively adjusted. Therefore, the single condyle femoral condyle holder can match the sizes of different models of single condyle femoral condyles and can hold femoral condyles of different specifications. In addition, the femoral condyle holder can hit the femoral condyle during installation. Since the limiting action is provided, the problem of deviation can be solved, and the polished surface of the femoral condyle will not be damaged when the femoral condyle is installed in place. After using the femoral condyle holder, the femoral condyle can be directly hit, and the step of using the femoral condyle driver can be omitted. The technical solution saves the operation time when the single condyle femoral condyle is installed, does not need to be operated by fingers, and reduces the risk of operation caused by contamination of the prosthesis.

[0012] Further, in order to facilitate the installation of the connecting part and the movement of the connecting part, the one end of the holder handle is provided with a avoiding slot, and the connecting part and the avoiding slot are in sliding connection.

[0013] Further, in order to facilitate the assembly of the sliding connection between the connecting part and the avoiding slot and simplify the structure design, the two sides of the avoiding slot are provided with a first extension and a second extension, and the two ends of the first pin shaft are fixedly connected with the first extension and the second extension, respectively.

[0014] Further, in order to provide a sliding connection structure of the connecting part relative to the holder handle, the connecting part is provided with a strip-shaped hole on each side, and the first pin shaft is slidably connected with the strip-shaped hole through the two ends of the first pin shaft.

[0015] Further, in order to facilitate the installation of the first and second clamping buckles, the upper and lower ends of the connecting part are respectively provided with an upper strip-shaped opening and a lower strip-shaped opening, and the middle parts of the first and second clamping buckles are respectively provided with a first connecting arm and a second connecting arm, the first connecting arm extends from the upper strip-shaped opening to the inside of the connecting part and is rotatably connected with the first pin shaft, and the second connecting arm extends from the lower strip-shaped opening to the inside of the connecting part and is rotatably connected with the first pin shaft.

[0016] Further, in order to facilitate the assembly of the connecting part and the arc-shaped positioning part, the arc-shaped positioning part is provided with an abutting protrusion, and the end of the connecting part is provided with an abutting groove, the abutting groove and the abutting protrusion are clamped and fixedly connected through the second pin shaft.

[0017] Further, in order to facilitate the elastic connection between the first and second clamping buckles and the holder handle, the first and second clamping buckles are elastically connected with the holder handle through springs.

[0018] Further, in order to facilitate the abutting and clamping of the hook part and the single femoral condyle, the hook part is provided with an inclined surface and a horizontal surface, the inclined surface is located on the outer side of the hook part and inclined downward toward the arc-shaped positioning part, and the horizontal surface is located between the inner wall of the hook part and the hook part.

[0019] Further, in order to provide a rotating connection structure with simple structure and convenient installation, the holder handle is provided with a positioning pin, the rotating drive rod is provided with an annular groove, and the positioning pin and the annular groove are slidably connected.

[0020] Further, in order to facilitate the rotating operation of the rotating drive rod, the end of the rotating drive rod extending out of the holder handle is provided with an operation knob.

[0021] The beneficial effects of the present application are: in the technical scheme, when the rotating drive rod is rotated relative to the holder handle, the connection part moves along the length direction of the holder handle due to the threaded connection between one end of the connection part and the rotating drive rod, the sliding connection between the first pin shaft and the connection part, and the fixed connection between the two ends of the first pin shaft and the holder handle. When the rotating drive rod drives the connection part to move away from the hook part, the distance between the arc-shaped positioning part and the hook part is far, and the relative distance between the two hook parts is increased by pressing the elastic connection end of the first clamping buckle and the second clamping buckle. In this state, it is convenient to butt joint with the single condyle femoral condyle. Then, the elastic connection end is released, and the hook parts of the first clamping buckle and the second clamping buckle are abutted to the end surface of the single condyle femoral condyle under the action of the elastic force. Then, the rotating drive rod is operated to drive the connection part to move towards the hook part, so that the arc surface of the arc-shaped positioning part is completely abutted to the arc surface of the single condyle femoral condyle, and the single condyle femoral condyle is clamped and positioned. The angle of the clamping buckle opened by the single condyle femoral condyle holder by pressing the elastic connection end of the first clamping buckle and the second clamping buckle can be adjusted to ensure that the femoral condyle can be placed in the middle of the clamping buckle. The rotating drive rod is operated to lock the head of the femoral condyle holder and fix the single condyle femoral condyle, so as to hold the femoral condyle.

[0022] In addition, in the above structure, the clamping effect between the first clamping buckle and the second clamping buckle is determined by the elastic force, and the distance between the arc-shaped positioning part and the hook part can also be adaptively adjusted. Therefore, the single condyle femoral condyle holder can match the size of different models of single condyle femoral condyles and can hold femoral condyles of different specifications. In addition, the femoral condyle holder can hit the femoral condyle during installation. Since it has a limiting effect, it can solve the problem of deviation and will not damage the polished surface of the femoral condyle when the femoral condyle is installed in place. After using the femoral condyle holder, the femoral condyle can be directly hit, and the step of using the femoral condyle driver can be omitted. The technical scheme saves the operation time when installing the single condyle femoral condyle, does not need to use fingers, and reduces the risk of surgery caused by contamination of the prosthesis. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the first perspective of the present application;

[0024] Figure 2 It is a structural schematic view of the second perspective of the present application;

[0025] Figure 3 It is a top view structural schematic view of the present application;

[0026] Figure 4 It is Figure 3 the sectional view at A-A in the middle;

[0027] Figure 5This is another cross-sectional view of the present invention.

[0028] In the figure: 1. Handle grip; 2. Rotary drive rod; 3. First locking buckle; 4. Handle head; 4.1. Connecting part; 4.2. Arc-shaped positioning part; 4.3. Arc-shaped surface; 5. Second locking buckle; 6. First pin; 7. Hook; 8. Clearance groove; 9. First extension; 10. Second extension; 11. Strip hole; 12. Upper strip opening; 13. Lower strip opening; 14. First connecting arm; 15. Second connecting arm; 16. Butt joint protrusion; 17. Butt joint groove; 18. Second pin; 19. Spring; 20. Inclined surface; 21. Horizontal surface; 22. Positioning pin; 23. Annular groove; 24. Operating knob. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0030] Example 1:

[0031] like Figures 1-5 As shown, this embodiment provides a unicompartmental femoral condyle holder, including a holder handle 1, a rotary drive rod 2, a locking buckle, and a holder head 4. The rotary drive rod 2 is disposed inside the holder handle 1 and the two are rotatably engaged. Specifically, the outer cross-section of the holder handle 1 is square, and the holder handle 1 is provided with a protrusion for easy hand gripping and operation. The holder head 4 includes a connecting part 4.1 and an arc-shaped positioning part 4.2. One end of the connecting part 4.1 is threadedly engaged with the rotary drive rod 2, and the arc-shaped positioning part 4.2 has an arc-shaped surface 4.3 that matches the shape of the unicompartmental femoral condyle.

[0032] The locking mechanism includes a first locking buckle 3 and a second locking buckle 5 symmetrically arranged on both sides of the grip 1. The pressing ends of the first locking buckle 3 and the second locking buckle 5 are elastically connected to the grip 1. The middle parts of the first locking buckle 3 and the second locking buckle 5 are rotatably connected by a first pin 6. The first pin 6 is slidably engaged with the connecting part 4.1, and both ends of the first pin 6 are fixedly connected to the grip 1. The clamping ends of the first locking buckle 3 and the second locking buckle 5 have hooks 7 extending towards each other. The two hooks 7 are located on both sides of the arc-shaped positioning part 4.2 along its length.

[0033] In the technical solution, when the rotating driving rod 2 is rotated relative to the holder handle 1, the connecting part 4.1 moves along the length direction of the holder handle 1 due to the threaded cooperation between one end of the connecting part 4.1 and the rotating driving rod 2 and the sliding cooperation between the first pin shaft 6 and the connecting part 4.1 and the fixed connection between the two ends of the first pin shaft 6 and the holder handle 1. When the rotating driving rod 2 drives the connecting part 4.1 to move in the direction away from the hook part 7, the distance between the arc-shaped positioning part 4.2 and the hook part 7 is far, and the relative distance between the two hook parts 7 is increased by pressing the elastic connecting end of the first clamping buckle 3 and the second clamping buckle 5. In this state, the single condyle femoral condyle is conveniently connected. Then, the elastic connecting end is loosened, and the hook part 7 of the first clamping buckle 3 and the second clamping buckle 5 is abutted to the end surface of the single condyle femoral condyle under the action of the elastic force. Then, the rotating driving rod 2 is operated to drive the connecting part 4.1 to move in the direction of the hook part 7, so that the arc-shaped surface 4.3 of the arc-shaped positioning part 4.2 is completely abutted to the arc-shaped end surface of the single condyle femoral condyle, and the single condyle femoral condyle is clamped and positioned. The angle of the clamping buckle 3 opened can be adjusted by pressing the elastic connecting end of the first clamping buckle 3 and the second clamping buckle 5 of the femoral condyle holder, so that the femoral condyle can be put into the middle of the clamping buckle 3. The rotating driving rod 2 is rotated to lock the head part 4 of the femoral condyle holder and fix the single condyle femoral condyle, so that the purpose of holding the femoral condyle is achieved.

[0034] In addition, in the above structure, the clamping effect between the first clamping buckle 3 and the second clamping buckle 5 is determined by the elastic force, and the distance between the arc-shaped positioning part 4.2 and the hook part 7 can also be adaptively adjusted. Therefore, the single condyle femoral condyle holder can match the sizes of different models of single condyle femoral condyles and can hold femoral condyles of different specifications. In addition, the femoral condyle holder can hit the femoral condyle during installation. Since there is a limiting action, the problem of deviation can be solved, and the polished surface of the femoral condyle will not be damaged when the femoral condyle is installed in place. After using the femoral condyle holder, the femoral condyle can be directly hit, and the step of using the femoral condyle driver can be omitted. The technical solution saves more operation time when installing the single condyle femoral condyle, does not need to use fingers, and reduces the operation risk caused by the pollution of the prosthesis.

[0035] Embodiment 2:

[0036] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0037] In order to facilitate the installation of the connecting part 4.1 and facilitate the movement of the connecting part 4.1, one end of the holder handle 1 is provided with a avoiding slot 8, and the connecting part 4.1 and the avoiding slot 8 are in sliding cooperation.

[0038] Embodiment 3:

[0039] This embodiment is optimized on the basis of the above-mentioned embodiment 2.

[0040] In order to facilitate the assembly of the sliding fit relationship between the connecting part 4.1 and the avoiding groove 8, and simplify the structure design, the avoiding groove 8 has a first extension 9 and a second extension 10 on both sides, and the two ends of the first pin shaft 6 are fixedly connected with the first extension 9 and the second extension 10 respectively.

[0041] Embodiment 4:

[0042] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0043] In order to provide a specific sliding connection structure of the connecting part 4.1 relative to the gripper handle 1, the connecting part 4.1 is provided with a strip-shaped hole 11 on both sides, and the two ends of the first pin shaft 6 pass through the corresponding strip-shaped hole 11 and are in sliding fit with the strip-shaped hole 11, and the extension direction of the strip-shaped hole 11 is parallel to the length direction of the gripper handle 1.

[0044] Embodiment 5:

[0045] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0046] In order to facilitate the installation of the first clamping buckle 3 and the second clamping buckle 5, the upper and lower ends of the connecting part 4.1 are respectively provided with an upper strip-shaped opening 12 and a lower strip-shaped opening 13, and the middle parts of the first clamping buckle 3 and the second clamping buckle 5 are respectively provided with a first connecting arm 14 and a second connecting arm 15, the first connecting arm 14 extends from the upper strip-shaped opening 12 to the inside of the connecting part 4.1 and is in rotational fit with the first pin shaft 6, and the second connecting arm 15 extends from the lower strip-shaped opening 13 to the inside of the connecting part 4.1 and is in rotational fit with the first pin shaft 6.

[0047] Embodiment 6:

[0048] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0049] In order to facilitate the assembly of the connecting part 4.1 and the arc-shaped positioning part 4.2, as shown in Figure 4 , the arc-shaped positioning part 4.2 has a butt joint protrusion 16, and the end of the connecting part 4.1 has a butt joint groove 17, the butt joint groove 17 and the butt joint protrusion 16 are clamped and fixedly connected through the second pin shaft 18.

[0050] Embodiment 7:

[0051] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0052] In order to facilitate the elastic connection between the first clamping buckle 3 and the second clamping buckle 5 and the holder handle 1, the first clamping buckle 3 and the second clamping buckle 5 are elastically connected with the holder handle 1 through the spring 19.

[0053] Embodiment 8:

[0054] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0055] In order to facilitate the butt joint and clamping of the hook part 7 and the single femoral condyle, as shown in the figure, the hook part 7 has an inclined surface 20 and a horizontal surface 21, the inclined surface 20 is located on the outer side of the hook part 7 and inclined downward in the direction of the arc-shaped positioning part 4.2, and the horizontal surface 21 is located between the inner wall of the hook part 7 and the hook part 7. Figure 3

[0056] Embodiment 9:

[0057] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0058] In order to provide a rotating connection structure with simple structure and convenient installation, as shown in the figure, the holder handle 1 is provided with a positioning pin 22, and the rotating drive rod 2 is provided with an annular groove 23, and the positioning pin 22 and the annular groove 23 are in sliding fit. Figure 5

[0059] Embodiment 10:

[0060] This embodiment is optimized on the basis of the above-mentioned embodiment 1.

[0061] In order to facilitate the rotation operation of the rotating drive rod 2, the end of the rotating drive rod 2 extending out of the holder handle 1 is provided with an operation knob 24.

[0062] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.​​

Claims

1. A unicompartmental femoral condyle holder, characterized by: The holder handle, the rotating drive rod, the clamping buckle and the holder head, the rotating drive rod is arranged in the holder handle and is rotationally connected with the holder handle, the holder head comprises a connecting part and an arc-shaped positioning part, one end of the connecting part is threadedly connected with the rotating drive rod, and the arc-shaped positioning part has an arc-shaped surface matched with the shape of the condyle of the unicompartmental femur; The clamping buckle comprises a first clamping buckle and a second clamping buckle symmetrically arranged on both sides of the holder handle, the pressing ends of the first clamping buckle and the second clamping buckle are elastically connected with the holder handle, the middle parts of the first clamping buckle and the second clamping buckle are rotationally connected through a first pin shaft, the first pin shaft is slidingly connected with the connecting part, and both ends of the first pin shaft are fixedly connected with the holder handle, and the clamping ends of the first clamping buckle and the second clamping buckle have hook parts extending towards each other, and the two hook parts are located on both sides of the arc-shaped positioning part in the length direction respectively; One end of the holder handle is provided with an avoiding groove, and the connecting part is slidingly connected with the avoiding groove; The holder handle is provided with a positioning pin, and the rotating drive rod is provided with an annular groove, and the positioning pin is slidingly connected with the annular groove.

2. A unicompartmental femoral condyle holder according to claim 1, wherein: Both sides of the avoiding groove are provided with a first extension part and a second extension part, and both ends of the first pin shaft are fixedly connected with the first extension part and the second extension part respectively.

3. The unicompartmental femoral condyle gripper according to claim 1, characterized in that: Both sides of the connecting part are provided with strip-shaped holes, both ends of the first pin shaft pass through the corresponding strip-shaped holes and are slidingly connected with the strip-shaped holes, and the extension direction of the strip-shaped hole is parallel to the length direction of the holder handle.

4. The unicompartmental femoral condyle holder according to claim 1, characterized in that: The upper and lower ends of the connecting part are provided with upper and lower strip-shaped holes respectively, the middle parts of the first clamping buckle and the second clamping buckle are provided with first and second connecting arms respectively, the first connecting arm extends from the upper strip-shaped hole to the inside of the connecting part and is rotationally connected with the first pin shaft, and the second connecting arm extends from the lower strip-shaped hole to the inside of the connecting part and is rotationally connected with the first pin shaft.

5. The unicompartmental femoral condyle gripper of claim 1, wherein: The arc-shaped positioning part has a butt joint protrusion, the end of the connecting part has a butt joint groove, the butt joint groove and the butt joint protrusion are clamped and fixedly connected through a second pin shaft.

6. The unicompartmental femoral condyle gripper of claim 1, wherein: The first clamping buckle and the second clamping buckle are elastically connected with the holder handle through a spring.

7. The unicompartmental femoral condyle gripper of claim 1, wherein: The hook part has an inclined surface and a horizontal surface, the inclined surface is located on the outer side of the hook part and inclines downward in the direction of the arc-shaped positioning part, and the horizontal surface is located between the inner side wall of the hook part and the hook part.

8. The unicompartmental femoral condyle holder of claim 1, wherein: One end of the rotating drive rod extending out of the holder handle is provided with an operation knob.

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