Ankle joint tibia support osteotomy guide plate
By setting inclined osteotomy grooves and slots on the tibial osteotomy guide plate of the ankle joint, combined with fixation holes and positioning holes, the problems of unstable prosthesis fixation and slow bone recovery are solved, achieving stable fixation of the prosthesis and accelerated bone recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- B ONE MEDICAL (SUZHOU) CO LTD
- Filing Date
- 2024-12-26
- Publication Date
- 2026-04-17
AI Technical Summary
Existing ankle joint tibial support osteotomy plates are inadequate in terms of prosthesis fixation and bone recovery, failing to ensure prosthesis stability and effectively stimulate bone recovery.
An ankle joint tibial osteotomy guide plate was designed. By setting inclined osteotomy grooves and slots on the base and setting the osteotomy grooves and slots in the insertion direction of the osteotomy tool, combined with the use of fixation holes and positioning holes, the prosthesis is firmly fixed and the bone is stimulated to recover by tilting the prosthesis.
It improves the fixation stability of the prosthesis and accelerates bone recovery through the design of the tilted prosthesis.
Smart Images
Figure CN224126018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an ankle joint tibial osteotomy guide plate, belonging to the field of medical devices. Background Technology
[0002] Currently, there are two types of tibial osteotomy plates used in ankle replacement surgery. One type involves drilling chamfered holes using a radiographic testing module before using the osteotomy plate to cut the tibia. The other type involves creating two pre-drilled holes in the osteotomy plate at the locations where the original holes need to be drilled, drilling chamfered holes using these pre-drilled holes, inserting two retaining posts into the drilled holes, and finally cutting the tibia. Regardless of the type of osteotomy plate, neither type can ensure the fixation of the prosthesis during subsequent placement, nor can they positively contribute to the recovery of the bone.
[0003] In view of this, it is indeed necessary to improve the existing ankle joint tibial osteotomy guide plate to solve the above problems. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an ankle joint tibial osteotomy guide plate, which can ensure the fixation of the prosthesis, stimulate the human body, and accelerate the bone recovery speed.
[0005] The technical solution of this utility model is:
[0006] An ankle joint tibial osteotomy guide plate includes a base and an osteotomy groove passing through the base. The base has a first base and a second base formed on the upper and lower sides of the osteotomy groove, respectively. The second base has a slot that communicates with the osteotomy groove. The direction perpendicular to the osteotomy guide plate is defined as the insertion direction of the osteotomy tool. In the insertion direction of the osteotomy tool, both the osteotomy groove and the slot are inclined.
[0007] As a further improvement of this utility model, in the insertion direction of the osteotomy tool, both the osteotomy groove and the slot hole extend obliquely away from the second base.
[0008] As a further improvement of this utility model, the second base has an osteotomy surface facing the osteotomy groove and a groove surface facing the groove hole, the osteotomy surface and the groove surface are connected, and the osteotomy surface extends obliquely in the direction of the osteotomy groove, and the groove surface extends obliquely in the direction of the groove hole.
[0009] As a further improvement of this utility model, in the insertion direction of the osteotomy tool, the inclination angles of both the osteotomy surface and the groove surface are between 5-10°.
[0010] As a further improvement of this utility model, the osteotomy groove includes a first osteotomy groove parallel to the horizontal plane, and a second osteotomy groove and a third osteotomy groove extending from both sides of the first osteotomy groove toward the second base, wherein the first osteotomy groove, the second osteotomy groove and the third osteotomy groove are interconnected.
[0011] As a further improvement of this utility model, two slots are provided, one directly opposite the connection between the first osteotomy slot and the second osteotomy slot, and the other directly opposite the connection between the first osteotomy slot and the third osteotomy slot.
[0012] As a further improvement of this utility model, the depth of the groove is less than the width of the osteotomy groove.
[0013] As a further improvement of this utility model, the first base is provided with a fixing hole and a positioning hole that are staggered. At least two positioning members are inserted into the fixing hole and the positioning hole respectively to fix the first base to the tibia.
[0014] As a further improvement of this utility model, the fixing hole is also inclined in the insertion direction of the osteotomy tool.
[0015] As a further improvement of this utility model, at least two positioning holes are provided, and the two positioning holes are arranged vertically on the first base, and the positioning member can be selectively inserted into either of the positioning holes.
[0016] The beneficial technical effects of this utility model are as follows: The ankle joint tibial osteotomy guide plate of this utility model has a groove connected to the osteotomy groove on the second base of the base, and the osteotomy groove and the groove are both inclined in the insertion direction of the osteotomy tool perpendicular to the osteotomy guide plate, which makes the fixation of the prosthesis more reliable. At the same time, the inclined prosthesis can constantly stimulate the human body and accelerate the bone recovery effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the ankle joint tibial osteotomy guide plate according to a preferred embodiment of the present utility model. Detailed Implementation
[0018] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0019] Please see Figure 1As shown, this utility model discloses an ankle joint tibial osteotomy guide plate 100. The osteotomy guide plate 100 includes a base 1 and an osteotomy groove 2 passing through the base 1. The base 1 has a first base 3 and a second base 4 formed on the upper and lower sides of the osteotomy groove 2, respectively. The second base 4 is provided with a slot 40 communicating with the osteotomy groove 2. The direction perpendicular to the osteotomy guide plate 100 is defined as the insertion direction of the osteotomy tool. In the insertion direction of the osteotomy tool, both the osteotomy groove 2 and the slot 40 are inclined.
[0020] In this embodiment, the osteotomy groove 2 is used for inserting osteotomy tools to cut the human tibia along the extension direction of the osteotomy groove 2, and then a prosthesis is filled into the osteotomy groove 2. Therefore, the inclined setting of the osteotomy groove 2 is adapted to the shape of the prosthesis, so that the prosthesis can also be implanted into the human body at an angle. On the one hand, the inclined prosthesis can be fixed more firmly; on the other hand, based on the inclination of the prosthesis, it can also continuously stimulate the human body and accelerate the bone recovery speed.
[0021] The osteotomy groove 2 includes a first osteotomy groove 21 parallel to the horizontal plane, and a second osteotomy groove 22 and a third osteotomy groove 23 extending from both sides of the first osteotomy groove 21 toward the second base 4. The first osteotomy groove 21, the second osteotomy groove 22, and the third osteotomy groove 23 are interconnected. Alternatively, the osteotomy groove 2 can be described as roughly U-shaped.
[0022] The slot 40 is a drill hole for a drilling tool to pre-drill into the tibia. Two slots 40 are provided, one corresponding to the connection point between the first osteotomy groove 21 and the second osteotomy groove 22, and the other to the connection point between the first osteotomy groove 21 and the third osteotomy groove 23. Therefore, by providing the slots 40, feedback on the cutting position can be given to the surgeon during the tibia cutting process. That is, when the surgeon cuts along the second osteotomy groove 22 towards the first osteotomy groove 21, upon reaching the slot 40, a hollowed-out feel will be felt, indicating that the cut has been completed and cutting can begin from the first osteotomy groove 21 towards the third osteotomy groove 23, thus avoiding over-cutting.
[0023] Preferably, the depth of the slot 40 is less than the width of the osteotomy slot 2, to prevent the prosthesis from becoming loose after implantation.
[0024] In the insertion direction of the osteotomy tool, both the osteotomy groove 2 and the slot 40 extend obliquely away from the second base 4.
[0025] Specifically, the second base 4 has an osteotomy surface 41 facing the osteotomy groove 2 and a groove surface 42 facing the slot 40. The osteotomy surface 41 and the groove surface 42 are connected, and the osteotomy surface 41 extends obliquely toward the osteotomy groove 2, while the groove surface 42 extends obliquely toward the slot 40. That is to say, the inclination of the osteotomy groove 2 and the slot 40 are both reflected in the second base 4.
[0026] Preferably, the osteotomy surfaces 41 corresponding to the second osteotomy groove 22 and the third osteotomy groove 23 are preferentially inclined, while the osteotomy surface 41 corresponding to the first osteotomy groove 21 cannot be inclined. This is because the first osteotomy groove 21 needs to be parallel to fix the prosthesis; therefore, only the second osteotomy groove 22 and the third osteotomy groove 23, i.e., the opposite sides of the osteotomy groove 2, are inclined. In the insertion direction of the osteotomy tool, the inclination angle of the osteotomy surface 41 and the groove surface 42 is between 5-10°. 5°, 8°, 10°, etc., can be selected.
[0027] The first base 3 is provided with a staggered fixing hole 31 and a positioning hole 32. At least two positioning elements are inserted into the fixing hole 31 and the positioning hole 32 respectively to fix the first base 3 to the tibia. In this embodiment, the first base 3 and the second base 4 are integrally formed; therefore, fixing the first base 3 also fixes the second base 4. Even if the second base 4 breaks and falls off during the cutting process, it will not affect the fixation of the first base 3. Of course, it is also possible to choose to provide one or both of the fixing hole 31 and the positioning hole 32 on the second base 4; this is not limited.
[0028] The fixing hole 31 is also inclined in the insertion direction of the osteotomy tool. This prevents the osteotomy guide plate 100 from dislodging along the insertion direction of the osteotomy tool. Preferably, the inclination angle of the fixing hole 31 is the same as the inclination angle of the osteotomy surface 41 and the groove surface 42.
[0029] At least two positioning holes 32 are provided, and the two positioning holes 32 are arranged vertically on the first base 3. The positioning member can be selectively inserted into either of the positioning holes 32. In this embodiment, both the fixing hole 31 and the positioning hole 32 can be fixed with Kirschner wires, and the two positioning holes 32 are interconnected. However, in other embodiments, this is not a limitation, that is, the two positioning holes 32 may not be interconnected, which is only to allow for different injection heights.
[0030] In this embodiment, there are two fixing holes 31 and four positioning holes 32. In actual fixing, the two positioning members are first inserted into the two fixing holes 31 to initially fix the first base 3. Then, the two positioning members are inserted into the two positioning holes 32 to completely fix the first base 3 through the four positioning members, that is, a fixing plane is determined by four points.
[0031] In summary, the ankle joint tibial osteotomy guide plate 100 of this utility model provides a slot 40 on the second base 4 of the base 1 that communicates with the osteotomy groove 2, and both the osteotomy groove 2 and the slot 40 are inclined in the direction of insertion of the osteotomy tool perpendicular to the osteotomy guide plate 100, which makes the fixation of the prosthesis more secure. At the same time, the inclined prosthesis can constantly stimulate the human body and accelerate the bone recovery effect.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A tibial osteotomy guide plate for ankle joints, characterized in that, The tool includes a base and an osteotomy groove passing through the base. The base has a first base and a second base on the upper and lower sides of the osteotomy groove, respectively. The second base has a slot that communicates with the osteotomy groove. The direction perpendicular to the osteotomy guide plate is defined as the insertion direction of the osteotomy tool. In the insertion direction of the osteotomy tool, both the osteotomy groove and the slot are inclined.
2. The ankle tibial cut guide of claim 1, wherein, In the insertion direction of the osteotomy tool, both the osteotomy groove and the slot extend obliquely away from the second base.
3. The ankle tibial cut guide of Claim 2, wherein, The second base has an osteotomy surface facing the osteotomy groove and a groove surface facing the groove hole, the osteotomy surface and the groove surface are connected, and the osteotomy surface extends obliquely in the direction of the osteotomy groove, and the groove surface extends obliquely in the direction of the groove hole.
4. The ankle tibial cut guide of Claim 3, wherein, In the insertion direction of the osteotomy tool, the inclination angles of both the osteotomy surface and the groove surface are between 5 and 10°.
5. The ankle tibial cut guide of Claim 1, wherein, The osteotomy groove includes a first osteotomy groove parallel to the horizontal plane, and a second osteotomy groove and a third osteotomy groove extending from both sides of the first osteotomy groove toward the second base. The first osteotomy groove, the second osteotomy groove and the third osteotomy groove are interconnected.
6. The ankle joint tibial osteotomy guide plate according to claim 5, characterized in that, The groove is provided in two places, and is respectively located at the connection between the first osteotomy groove and the second osteotomy groove, and at the connection between the first osteotomy groove and the third osteotomy groove.
7. The ankle tibial cut guide of Claim 1, wherein, The depth of the slot is less than the width of the osteotomy groove.
8. The ankle tibial cut guide of Claim 1, wherein, The first base is provided with a staggered fixing hole and a positioning hole. At least two positioning elements are inserted into the fixing hole and the positioning hole respectively to fix the first base to the tibia.
9. The ankle tibial cut guide of Claim 8, wherein, The fixing hole is also inclined in the insertion direction of the osteotomy tool.
10. The ankle tibial cut guide of Claim 8, wherein, At least two positioning holes are provided, and the two positioning holes are arranged vertically on the first base. The positioning member can be selectively inserted into either of the positioning holes.