Universal osteotomy guide plate for fixing ankle joint talus

Abstract

The utility model discloses a universal osteotomy guide plate for fixing ankle joint talus, which comprises a positioning osteotomy seat and a fixing component, a part of talus matching part is arranged on the bottom surface of a connecting block, and the top of the connecting block is connected with the fixing component; the first end of the first curved surface is located on the bottom face of the connecting block, the second end of the first curved surface extends towards the top of the connecting block, the first end of the second curved surface is connected with the second end of the first curved surface, and the second end of the second curved surface extends to the top of the connecting block and is connected with the fixing assembly. The first groove and the second groove are formed in the first curved surface and the second curved surface respectively; the first fixing block is arranged at the top of the connecting block, two first fixing holes are formed in the second end of the first fixing block, the first fixing holes penetrate through the first fixing block, the first kirschner wire penetrates through the two first fixing holes and is inserted into the talus, so that the talus is fixed, recycling of the osteotomy guide plate is achieved, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and more particularly to a universal osteotomy guide plate for fixing the talus of an ankle joint. Background Art

[0002] In ankle replacement surgery, current technology, based on CT scans and 3D printing, allows for customized talar osteotomy guides. These guides perfectly conform to the corresponding tibiotalar bone surface, providing stable support. They are customized based on the patient's lower limb alignment, and their design does not rely excessively on ankle joint alignment.

[0003] The design of the talar osteotomy guide is time-consuming and there are also problems such as the talar osteotomy guide not fitting well with the bone surface of the talus and being unable to form a stable support, which will affect the positioning accuracy of the osteotomy guide.

[0004] Therefore, how to provide a universal osteotomy guide that can be recycled to shorten unnecessary osteotomy guide design time and material consumption for fixing the ankle talus has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] One purpose of the utility model is to provide a new technical solution for a universal osteotomy guide plate for fixing the talus of the ankle joint.

[0006] According to a first aspect of the present invention, a universal osteotomy guide for fixing the talus of the ankle joint is provided, comprising: a positioning osteotomy seat and a fixing assembly, wherein the positioning osteotomy seat is used to be positioned on the talus; the fixing assembly is arranged above the positioning osteotomy seat;

[0007] The positioning osteotomy seat includes a connecting block and a talar matching portion, part of the talar matching portion is arranged on the bottom surface of the connecting block, and the top of the connecting block is connected to the fixing assembly; the talar matching surface includes a first curved surface, a second curved surface, a first groove and a second groove, the first end of the first curved surface is located on the bottom surface of the connecting block, the second end of the first curved surface extends toward the top of the connecting block, the first end of the second curved surface is connected to the second end of the first curved surface, the second end of the second curved surface extends to the top of the connecting block and is connected to the fixing assembly, the first groove and the second groove are respectively arranged on the first curved surface and the second curved surface for matching with the talus;

[0008] The fixation assembly includes a first fixation block and a first Kirschner wire. The first fixation block is arranged on the top of the connecting block. Two first fixation holes are provided on the second end of the first fixation block. The first fixation holes pass through the first fixation block. The first Kirschner wire passes through the two first fixation holes and is inserted into the inside of the talus.

[0009] Optionally, the depth of the first groove is greater than the depth of the second groove, and the area of ​​the second groove is greater than the area of ​​the first groove.

[0010] Optionally, the first groove is provided at the second end of the first curved surface, the second groove is provided at the first end of the second curved surface, and a cross section is formed between the first groove and the second groove.

[0011] Optionally, a third curved surface is provided on the second end of the first fixing block, and the third curved surface is connected to the second end of the second curved surface.

[0012] Optionally, one side of the third curved surface is an arc structure, and the other side of the third curved surface is a corrugated structure.

[0013] Optionally, the fixation assembly further includes a second fixation block and a second Kirschner wire, the second fixation block is arranged at an angle, two second fixation holes are provided on the second fixation block, the second fixation holes pass through the second fixation block, the first fixation block and the connecting block, the second Kirschner wire passes through the two second fixation holes and is inserted into the inside of the talus.

[0014] Optionally,

[0015] The universal osteotomy guide for fixing the ankle talus further comprises a handle, the handle being arranged obliquely, and the first end of the handle being connected to the first end of the handle;

[0016] The inclination direction of the second fixing block is the same as the inclination direction of the handle, and the inclination angle of the second fixing block is greater than the inclination angle of the handle.

[0017] Optionally, the fixing assembly further includes a support block, and two ends of the support block are respectively connected to the second fixing block and the handle.

[0018] The beneficial effects of the present invention are:

[0019] The utility model arranges a fixing assembly above the positioning osteotomy seat, and arranges a part of the talar matching portion on the bottom surface of the connecting block, and the top of the connecting block is connected to the fixing assembly; the first end of the first curved surface is located on the bottom surface of the connecting block, the second end of the first curved surface extends toward the top of the connecting block, the first end of the second curved surface is connected to the second end of the first curved surface, the second end of the second curved surface extends to the top of the connecting block and is connected to the fixing assembly, the first groove and the second groove are respectively arranged on the first curved surface and the second curved surface, the first fixing block is arranged on the top of the connecting block, and two first fixing holes are arranged on the second end of the first fixing block, the first fixing hole passes through the first fixing block, and the first Kirschner wire passes through the two first fixing holes and is inserted into the inside of the talus. During installation, the first curved surface and the second curved surface are aligned with the cartilage surface of the talus, and the first groove and the second groove are matched with the protrusions on the surface of the talus, so that the positioning osteotomy seat and the talus are closely matched. Then, the first Kirschner wire is passed through the two first fixing holes and inserted into the interior of the talus to fix the talus. Through the setting of the first groove and the second groove, the positioning osteotomy seat can adapt to the talus surface of most people, realizing recycling and shortening the design time and material consumption of unnecessary osteotomy guides.

[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 This is a structural diagram of a universal osteotomy guide for fixing the talus of the ankle joint according to the present invention;

[0023] Figure 2 This is a structural diagram from another angle of the universal osteotomy guide for fixing the talus of the ankle joint of the present invention.

[0024] The following are marked in the figure: 1. Positioning osteotomy seat; 11. Connecting block; 12. Talus matching part; 121. First curved surface; 122. Second curved surface; 123. First groove; 124. Second groove; 2. Fixing assembly; 21. First fixing block; 22. First fixing hole; 23. Third curved surface; 24. Second fixing block; 25. Second fixing hole; 26. Support block; 3. Handle. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0029] like Figures 1 to 2 As shown, an embodiment of the present invention provides a universal osteotomy guide for fixing the talus of the ankle joint, comprising: a positioning osteotomy seat 1 and a fixing assembly 2, wherein the positioning osteotomy seat 1 is used to be positioned on the talus; the fixing assembly 2 is arranged above the positioning osteotomy seat 1.

[0030] The positioning osteotomy seat 1 includes a connecting block 11 and a talar matching portion 12, part of the talar matching portion 12 is arranged on the bottom surface of the connecting block 11, and the top of the connecting block 11 is connected to the fixing assembly 2; the talar matching surface includes a first curved surface 121, a second curved surface 122, a first groove 123 and a second groove 124, the first end of the first curved surface 121 is located on the bottom surface of the connecting block 11, the second end of the first curved surface 121 extends toward the top of the connecting block 11, the first end of the second curved surface 122 is connected to the second end of the first curved surface 121, the second end of the second curved surface 122 extends to the top of the connecting block 11 and is connected to the fixing assembly 2, the first groove 123 and the second groove 124 are respectively arranged on the first curved surface 121 and the second curved surface 122 for matching with the talus.

[0031] Specifically, a portion of the talar engaging portion 12 is located on the bottom surface of the connecting block 11, while another portion of the talar engaging portion 12 extends from the first side wall of the connecting block 11 to the top surface of the connecting block 11. Furthermore, a first curved surface 121 located on the first side wall of the connecting block 11 is recessed toward the interior of the connecting block 11, while a second curved surface 122 extends toward the exterior of the connecting block 11.

[0032] The fixing assembly 2 includes a first fixing block 21 and a first Kirschner wire. The first fixing block 21 is arranged on the top of the connecting block 11. Two first fixing holes 22 are provided on the second end of the first fixing block 21. The first fixing holes 22 pass through the first fixing block 21. The first Kirschner wire passes through the two first fixing holes 22 and is inserted into the inside of the talus.

[0033] Specifically, the first fixing block 21 is arranged horizontally, and the two first fixing holes 22 are also arranged horizontally.

[0034] During installation, the first curved surface 121 and the second curved surface 122 are first aligned with the cartilage surface of the talus, and the first groove 123 and the second groove 124 are matched with the protrusions on the surface of the talus, so that the positioning osteotomy seat 1 is closely matched with the talus.

[0035] Next, two first Kirschner wires are inserted into the first fixing holes 22 and into the interior of the talus, thereby fixing the osteotomy guide to the talus. The osteotomy guide is then removed and fixed to the talus with the two first Kirschner wires to achieve precise and stable fixation of the talus, thereby facilitating the subsequent osteotomy cutting steps.

[0036] Moreover, the osteotomy guide of the present invention is provided with the first groove 123 and the second groove 124, so that the positioning osteotomy seat 1 can adapt to the talus surface of most people, thereby realizing the recycling of the osteotomy guide, shortening the design time and material consumption of unnecessary osteotomy guides, and reducing costs.

[0037] The utility model arranges the fixing component 2 above the positioning osteotomy seat 1, and arranges part of the talar matching portion 12 on the bottom surface of the connecting block 11, and the top of the connecting block 11 is connected to the fixing component 2; the first end of the first curved surface 121 is located on the bottom surface of the connecting block 11, the second end of the first curved surface 121 extends toward the top of the connecting block 11, the first end of the second curved surface 122 is connected to the second end of the first curved surface 121, the second end of the second curved surface 122 extends to the top of the connecting block 11 and is connected to the fixing component 2, the first groove 123 and the second groove 124 are respectively arranged on the first curved surface 121 and the second curved surface 122, the first fixing block 21 is arranged on the top of the connecting block 11, and two first fixing holes 22 are provided on the second end of the first fixing block 21, the first fixing hole 22 passes through the first fixing block 21, and the first Kirschner wire passes through the two first fixing holes 22 and is inserted into the inside of the talus. During installation, the first curved surface 121 and the second curved surface 122 are aligned with the cartilage surface of the talus, and the first groove 123 and the second groove 124 are matched with the protrusions on the surface of the talus, so that the positioning osteotomy seat 1 is closely matched with the talus. Then the first Kirschner wire is passed through the two first fixing holes 22 and inserted into the inside of the talus to fix the talus. Through the setting of the first groove 123 and the second groove 124, the positioning osteotomy seat 1 can adapt to the talus surface of most people, realize recycling, and shorten the design time and material consumption of unnecessary osteotomy guides.

[0038] In one embodiment of the universal osteotomy guide plate for fixing the ankle talus of the present invention, as Figure 1 As shown, in order to make the osteotomy guide plate of the present invention adapt to the patient's talus, the depth of the first groove 123 is greater than the depth of the second groove 124, and the area of ​​the second groove 124 is greater than the area of ​​the first groove 123, thereby making the osteotomy guide plate adaptable to the talus surface of most people.

[0039] Furthermore, the first groove 123 is arranged at the second end of the first curved surface 121, the second groove 124 is arranged at the first end of the second curved surface 122, and a cross section is formed between the first groove 123 and the second groove 124, so that the universal osteotomy guide plate for fixing the ankle joint talus of the present invention can better adapt to the talus.

[0040] In one embodiment of the universal osteotomy guide plate for fixing the ankle talus of the present invention, as Figure 1 As shown, in order to further fit the surface of the human talus, a third curved surface 23 is provided on the second end of the first fixing block 21 , and the third curved surface 23 is connected to the second end of the second curved surface 122 .

[0041] Specifically, the length of the first fixing block 21 is greater than the length of the connecting plate, and the width of the first fixing block 21 is less than the width of the connecting plate. The first end of the first fixing block 21 is flush with the first end of the connecting plate, and the second end of the first fixing block 21 extends outside the second end of the connecting plate. The first curved surface 121 and the second curved surface 122 are located at the second end of the connecting plate.

[0042] The connection between the first end of the first curved surface 121 and the first end of the second curved surface 122 is a smooth transition setting, and the connection between the second end of the second curved surface 122 and the third curved surface 23 is a smooth transition setting.

[0043] Furthermore, one side of the third curved surface 23 is an arc structure, and the other side of the third curved surface 23 is a corrugated structure, which matches the structure of the human talus, so that the universal osteotomy guide for fixing the ankle joint talus of the present invention can fit more closely with the human talus, so that the first Kirschner wire and the second Kirschner wire can be stably driven into the interior of the human talus, avoiding the problem of the osteotomy guide being offset when the first Kirschner wire and the second Kirschner wire are driven into the interior of the human talus.

[0044] In one embodiment of the universal osteotomy guide plate for fixing the ankle talus of the present invention, as Figures 1 to 2 As shown, the fixation assembly 2 also includes a second fixation block 24 and a second Kirschner wire. The second fixation block 24 is tilted and has two second fixation holes 25. The second fixation holes 25 pass through the second fixation block 24, the first fixation block 21 and the connecting block 11. The second Kirschner wire passes through the two second fixation holes 25 and is inserted into the inside of the talus.

[0045] During installation, the first curved surface 121 and the second curved surface 122 are first aligned with the cartilage surface of the talus, and the first groove 123 and the second groove 124 are matched with the protrusions on the surface of the talus, so that the positioning osteotomy seat 1 is closely matched with the talus.

[0046] Next, two second Kirschner wires are inserted into the second fixing holes 25 and driven into the talus to position and secure the osteotomy guide to the talus. Next, two first Kirschner wires are inserted into the first fixing holes 22 and into the talus to secure the osteotomy guide to the talus. The second Kirschner wires are then removed, leaving two connection holes in the talus. The osteotomy guide is then removed along with the first Kirschner wires, leaving the two first Kirschner wires in place. These two first Kirschner wires are then used to secure the talus to a precise and stable fixation.

[0047] Finally, two second Kirschner wires are driven into the two connecting holes on the talus, and the talus is fixed by the two first Kirschner wires and the two second Kirschner wires to facilitate subsequent osteotomy surgery.

[0048] In one embodiment of the universal osteotomy guide plate for fixing the ankle talus of the present invention, as Figures 1 to 2 As shown, the universal osteotomy guide for fixing the talus of the ankle joint also includes a handle 3, the handle 3 is tilted, and the first end of the handle 3 is connected to the first end of the handle 3.

[0049] The inclination direction of the second fixing block 24 is the same as the inclination direction of the handle 3 , and the inclination angle of the second fixing block 24 is greater than the inclination angle of the handle 3 .

[0050] Specifically, the length, width and height of the handle 3 are all greater than those of the second fixing block 24 . Moreover, the orthographic projection of the handle 3 on the first fixing block 21 is located between the two first fixing holes 22 .

[0051] In the present invention, the handle 3 is tilted and the first end of the handle 3 is connected to the first end of the handle 3, so that the surgeon can move the osteotomy guide plate through the handle 3, thereby making the use of the osteotomy guide plate more convenient.

[0052] In one embodiment of the universal osteotomy guide plate for fixing the ankle talus of the present invention, as Figure 2 As shown, in order to increase the structural strength of the osteotomy guide, the fixing assembly 2 further includes a support block 26, the two ends of which are respectively connected to the second fixing block 24 and the handle 3, thereby improving the service life of the osteotomy guide of the present invention.

[0053] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A universal osteotomy guide for fixing the talus of the ankle joint, characterized in that: include: A positioning osteotomy seat and a fixing assembly, wherein the positioning osteotomy seat is used to be positioned on the talus; the fixing assembly is arranged above the positioning osteotomy seat; The positioning osteotomy seat includes a connecting block and a talar matching portion, part of the talar matching portion is arranged on the bottom surface of the connecting block, and the top of the connecting block is connected to the fixing assembly; the talar matching surface includes a first curved surface, a second curved surface, a first groove and a second groove, the first end of the first curved surface is located on the bottom surface of the connecting block, the second end of the first curved surface extends toward the top of the connecting block, the first end of the second curved surface is connected to the second end of the first curved surface, the second end of the second curved surface extends to the top of the connecting block and is connected to the fixing assembly, the first groove and the second groove are respectively arranged on the first curved surface and the second curved surface for matching with the talus; The fixation assembly includes a first fixation block and a first Kirschner wire. The first fixation block is arranged on the top of the connecting block. Two first fixation holes are provided on the second end of the first fixation block. The first fixation holes pass through the first fixation block. The first Kirschner wire passes through the two first fixation holes and is inserted into the inside of the talus.

2. The universal osteotomy guide for fixing the ankle talus according to claim 1, characterized in that: The depth of the first groove is greater than the depth of the second groove, and the area of ​​the second groove is greater than the area of ​​the first groove.

3. The universal osteotomy guide for fixing the ankle talus according to claim 2, characterized in that: The first groove is arranged at the second end of the first curved surface, the second groove is arranged at the first end of the second curved surface, and a cross section is formed between the first groove and the second groove.

4. The universal osteotomy guide for fixing the ankle talus according to claim 1, characterized in that: A third curved surface is provided on the second end of the first fixing block, and the third curved surface is connected to the second end of the second curved surface.

5. The universal osteotomy guide for fixing the ankle talus according to claim 4, characterized in that: One side of the third curved surface is an arc structure, and the other side of the third curved surface is a corrugated structure.

6. The universal osteotomy guide for fixing the ankle talus according to claim 1, characterized in that: The fixation assembly also includes a second fixation block and a second Kirschner wire. The second fixation block is arranged at an angle. Two second fixation holes are provided on the second fixation block. The second fixation holes pass through the second fixation block, the first fixation block and the connecting block. The second Kirschner wire passes through the two second fixation holes and is inserted into the inside of the talus.

7. The universal osteotomy guide for fixing the ankle talus according to claim 6, characterized in that: The universal osteotomy guide for fixing the ankle talus further comprises a handle, the handle being arranged obliquely, and the first end of the handle being connected to the first end of the handle; The inclination direction of the second fixing block is the same as the inclination direction of the handle, and the inclination angle of the second fixing block is greater than the inclination angle of the handle.

8. The universal osteotomy guide for fixing the ankle talus according to claim 7, characterized in that: The fixing assembly further includes a supporting block, two ends of which are respectively connected to the second fixing block and the handle.

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