Clamping jig for knee joint bone processing

Abstract

The utility model relates to a clamping jig for knee joint bone processing, which comprises a connecting base, a positioning connecting piece, a first profiling assembly and a second profiling assembly, the positioning connecting piece is detachably installed on one side of the connecting base and used for adjusting the spatial position where the first profiling assembly is located. The first profiling assembly is locked on one side of the positioning connecting piece; the second profiling assembly is detachably mounted on the first profiling assembly; a knee joint bone containing chamber is defined by the first profiling assembly and the second profiling assembly. The device is reasonable in structure, complete in function, convenient to operate, high in precision and good in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment processing auxiliary tools, in particular to a clamping fixture for processing knee joint bones. Background Art

[0002] During the machining of knee bones, precise positioning and secure clamping are essential to ensure accuracy and safety. Traditional clamping fixtures can suffer from issues such as inaccurate positioning, inability to adapt to the varying shapes and sizes of knee bones, poor clamping stability, and inconvenient operation. These issues not only affect machining accuracy but can also lead to suboptimal surgical outcomes and even adversely affect the patient's recovery.

[0003] In view of this, designing an efficient, precise and stable clamping fixture specifically for knee joint bone processing has important clinical significance and application value. Summary of the Invention

[0004] The purpose of the utility model is to provide a clamping jig for processing knee joint bones with reasonable structure, complete functions, convenient operation, high precision and good stability, so as to solve the above technical problems.

[0005] To implement the above technical solution, the technical solution of the utility model is as follows: a clamping jig for knee joint bone processing, comprising a connecting base, the clamping jig also comprising a positioning connector, a first profiling component and a second profiling component; the positioning connector is detachably mounted on one side of the connecting base, for adjusting the spatial position of the first profiling component; the first profiling component is locked on one side of the positioning connector; the second profiling component is detachably mounted on the first profiling component; wherein: a knee joint bone accommodating chamber is enclosed between the first profiling component and the second profiling component.

[0006] Furthermore, a profiling groove is provided along the length direction of the first profiling component; an inwardly concave platform is provided on one side of the profiling groove; a penetrating placement hole is provided along the height direction of the first profiling component; the placement hole is provided through the platform; a first fixed pin hole is provided in front of the placement hole; a second rectangular groove is provided on the platform; and the second rectangular groove extends to the placement hole.

[0007] Furthermore, a deformable clamping portion is provided on the contoured groove, and under the action of an electric field, the deformable clamping portion contracts in a radial direction to clamp the knee joint bone.

[0008] Furthermore, the deformable clamping portion includes a first deformable layer, an insulating layer and a second deformable layer adhered in sequence from the inside to the outside, and the first deformable layer, the insulating layer and the second deformable layer are all arranged in a horseshoe shape; the first deformable layer and the second deformable layer are both radially deformed piezoelectric ceramic blocks.

[0009] Furthermore, a second profiling groove is provided on the second profiling component; and a second deformable clamping portion is provided on the second profiling groove.

[0010] Furthermore, the second profiling component is connected to the first profiling component via symmetrically arranged positioning pins; and the second profiling component is provided with a through hole communicating with the placement hole.

[0011] Furthermore, the positioning connector is arranged in a square shape, and a second installation positioning pin is symmetrically inserted on one side.

[0012] Furthermore, a clamping and positioning component is detachably mounted on the other side of the connecting base.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) Through the contoured groove design of the first and second contouring components, the present invention enables highly precise contouring of the knee bone, providing accurate positioning and support for the knee bone. This contouring design significantly reduces machining errors caused by inaccurate positioning, ensuring that the machined knee bone more closely matches the patient's anatomy, and improving the success rate and effectiveness of the surgery. The provision of a positioning connector allows the position of the first contouring component to be adjusted according to actual needs, further enhancing the fixture's adaptability to individual differences in knee bones and meeting the specific machining requirements of different patients, thereby ensuring machining accuracy and consistency.

[0015] 2) The utility model utilizes the electric field-controlled deformation characteristics of piezoelectric ceramics to design a deformable clamping portion, which can achieve adaptive clamping of the knee joint bone. Under the action of the electric field, the deformable clamping portion can automatically adjust the clamping force according to the shape and size of the knee joint bone, ensuring that the knee joint bone will not be displaced or shaken during the processing, thereby ensuring the stability and continuity of the processing. This electric field-controlled clamping method has the advantages of fast response speed and controllable clamping force. It can quickly achieve clamping and loosening operations on the knee joint bone, thereby improving processing efficiency. At the same time, by precisely controlling the clamping force, damage to the knee joint bone due to excessive clamping force can be avoided, thereby ensuring the integrity and processing quality of the knee joint bone.

[0016] 3) The various components of the clamping jig of the present invention utilize detachable connections, such as the detachable mounting of the positioning connector and the connecting base, and the locating pin connection between the second profiling component and the first profiling component, making the jig more convenient to use and maintain. This design facilitates cleaning the jig, replacing damaged parts, and adjusting the jig to meet different processing requirements. The detachable design also makes the storage and transportation of the jig more convenient, reducing space and transportation costs. Furthermore, when the jig needs to be upgraded or improved, each component can be easily designed and optimized individually, improving the flexibility and scalability of the jig.

[0017] 4) The clamping and positioning components on the other side of the connection base enhance the stability of the connection between the jig and the processing equipment, ensuring that the jig will not loosen or shift due to external interference during the processing. This not only ensures processing accuracy but also improves processing safety, avoiding processing accidents caused by loose jigs and ensuring the safety of operators and patients.

[0018] In summary, the clamping fixture for knee joint bone processing has the advantages of reasonable structure, complete functions, easy operation, high precision and good stability. It can effectively meet various needs of knee joint bone processing and provide reliable technical support and guarantee for improving the quality of knee joint bone processing and surgical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the clamping fixture;

[0021] Figure 2 This is a schematic diagram of the negative axis side of the clamping fixture. DETAILED DESCRIPTION

[0022] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Please see the attached Figures 1 to 2 The figure shows a fixture for processing knee joint bones, comprising a connecting base 1, characterized in that the fixture further comprises a positioning connector 2, a first contouring component 3, and a second contouring component 4; the positioning connector 2 is detachably mounted on one side of the connecting base 1 for adjusting the spatial position of the first contouring component 3; the first contouring component 3 is locked to one side of the positioning connector 2; the second contouring component 4 is detachably mounted on the first contouring component 3; and a knee joint bone accommodation chamber is enclosed between the first contouring component 3 and the second contouring component 4. In this example, the contouring groove design of the first contouring component and the second contouring component enables high-precision contouring and fit of the knee joint bone, providing accurate positioning and support for the knee joint bone. This contouring design can greatly reduce processing errors caused by inaccurate positioning, ensure that the processed knee joint bone is more closely matched with the patient's physiological structure, and improve the success rate and effect of the operation. In addition, the setting of the positioning connector allows the position of the first contouring component to be adjusted according to actual needs, further improving the adaptability of the fixture to individual differences in different knee joint bones, and can meet the special processing requirements of different patients, thereby ensuring processing accuracy and consistency.

[0025] On the basis of the above embodiment, a profiling groove 31 is provided along the length direction of the first profiling component 3; an inwardly concave platform 32 is provided on one side of the profiling groove 31; a penetrating placement hole 33 is provided along the height direction of the first profiling component 3; the placement hole 33 is provided through the platform 32; a first fixed pin hole 34 is provided in front of the placement hole 33; a second rectangular groove 35 is provided on the platform 32; the second rectangular groove 35 extends to the placement hole 33.

[0026] On the basis of the above embodiment, a deformable clamping portion is provided on the contoured groove 31 , and under the action of an electric field, the deformable clamping portion contracts in a radial direction to clamp the knee joint bone.

[0027] Based on the above embodiment, the deformable clamping portion comprises a first deformable layer, an insulating layer, and a second deformable layer, which are sequentially adhered from the inside out. The first deformable layer, the insulating layer, and the second deformable layer are all arranged in a horseshoe shape; the first deformable layer and the second deformable layer are both radially deformable piezoelectric ceramic blocks. The deformable clamping portion, designed by utilizing the electric field-controlled deformation characteristics of piezoelectric ceramics, can achieve adaptive clamping of the knee joint bone. Under the action of the electric field, the deformable clamping portion can automatically adjust the clamping force according to the shape and size of the knee joint bone, ensuring that the knee joint bone does not shift or shake during processing, thereby ensuring the stability and continuity of the processing. This electric field-controlled clamping method has the advantages of fast response speed and controllable clamping force. It can quickly achieve clamping and loosening operations on the knee joint bone, thereby improving processing efficiency. At the same time, by precisely controlling the clamping force, damage to the knee joint bone caused by excessive clamping force can be avoided, ensuring the integrity and processing quality of the knee joint bone.

[0028] On the basis of the above embodiment, a second profiling groove 41 is provided on the second profiling component 4 ; and a second deformable clamping portion is provided on the second profiling groove 41 .

[0029] Based on the above embodiment, the second profiling component 4 is connected to the first profiling component 3 via symmetrically arranged positioning pins; the second profiling component 4 is provided with a through hole communicating with the placement hole 33 .

[0030] Based on the above embodiment, the positioning connector 2 is arranged in a square shape, and a second mounting positioning pin is symmetrically inserted on one side.

[0031] Building on the above-mentioned embodiment, a removable clamping and positioning component 11 is mounted on the other side of the connecting base 1. This clamping and positioning component enhances the stability of the connection between the jig and the processing equipment, ensuring that the jig does not become loose or displaced due to external forces during processing. This not only ensures processing accuracy but also improves process safety, avoiding processing accidents caused by jig loosening and ensuring the safety of operators and patients.

[0032] The operating procedure of the present invention is as follows: Knee bone placement: Carefully place the knee bone to be processed within the knee bone accommodation chamber enclosed by the first and second profiling components, ensuring that the shape of the knee bone matches the profiling groove and the second profiling groove as closely as possible. As needed, auxiliary positioning pins or fixing devices can be inserted through the placement holes and through-holes to further secure the position of the knee bone. Clamping operation: Activate the electric field control device to apply an electric field to the piezoelectric ceramic blocks of the deformation clamping section. Under the action of the electric field, the first and second deformation layers undergo radial deformation, causing the deformation clamping section to contract radially and clamp the knee bone. Observe the clamping state of the knee bone to ensure that the clamping is secure and uniform, and does not damage the knee bone. During the clamping process, the electric field strength can be adjusted according to actual conditions to obtain an appropriate clamping force. Processing operation: After the knee bone is clamped, corresponding processing operations such as cutting, grinding, and drilling can be performed. During the processing process, the operator should closely monitor the processing status to ensure smooth processing. At the same time, regularly check the clamping state and position of the knee bone for changes. If any abnormalities are found, stop processing and make adjustments immediately. Loosening and Removal: After processing is complete, turn off the electric field control device, return the deformed clamping part to its original state, and loosen the clamp on the knee bone. Carefully remove the processed knee bone from the fixture, taking care to avoid damaging the knee bone and the fixture.

[0033] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art should be able to utilize the technical contents disclosed above and make equivalent embodiments that are equivalent changes by making slight changes or modifications without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A clamping fixture for knee joint bone processing, comprising a connecting base (1), characterized in that: The clamping fixture further comprises a positioning connector (2), a first profiling component (3) and a second profiling component (4); the positioning connector (2) is detachably mounted on one side of the connecting base (1) for adjusting the spatial position of the first profiling component (3); the first profiling component (3) is locked on one side of the positioning connector (2); the second profiling component (4) is detachably mounted on the first profiling component (3); wherein: a knee joint bone accommodation chamber is enclosed between the first profiling component (3) and the second profiling component (4).

2. A clamping jig for knee joint bone processing according to claim 1, characterized in that: A profiling groove (31) is provided along the length direction of the first profiling component (3); a concave platform (32) is provided on one side of the profiling groove (31); a penetrating placement hole (33) is provided along the height direction of the first profiling component (3); the placement hole (33) is provided through the platform (32); a first fixed pin hole (34) is provided in front of the placement hole (33); a second rectangular groove (35) is provided on the platform (32); and the second rectangular groove (35) extends to the placement hole (33).

3. A clamping jig for knee joint bone processing according to claim 2, characterized in that: The contoured groove (31) is provided with a deformable clamping portion, which contracts in a radial direction to clamp the knee joint bone under the action of an electric field.

4. A clamping jig for knee joint bone processing according to claim 3, characterized in that: The deformable clamping portion includes a first deformable layer, an insulating layer and a second deformable layer adhered sequentially from the inside to the outside, and the first deformable layer, the insulating layer and the second deformable layer are all arranged in a horseshoe shape; the first deformable layer and the second deformable layer are both radially deformed piezoelectric ceramic blocks.

5. The clamping jig for knee joint bone processing according to claim 1, characterized in that: The second profiling component (4) is provided with a second profiling groove (41); the second profiling groove (41) is provided with a second deformation clamping portion.

6. The clamping jig for knee joint bone processing according to claim 1, characterized in that: The second profiling component (4) is connected to the first profiling component (3) via symmetrically arranged positioning pins; the second profiling component (4) is provided with a through hole communicating with the placement hole (33).

7. The clamping jig for knee joint bone processing according to claim 1, characterized in that: The positioning connector (2) is arranged in a square shape, and a second mounting positioning pin is symmetrically inserted on one side.

8. The clamping jig for knee joint bone processing according to claim 1, characterized in that: A clamping and positioning component (11) is detachably mounted on the other side of the connecting base (1).

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