A cr-type and ps-type femoral condyle test mold and an integrated structure of the intercondylar processor

Abstract

The invention belongs to the technical field of medical device design, and in particular relates to a CR-type and PS-type femoral condyle trial mold and an intercondylar processor function integrated structure, including an intercondylar milling cutter, a femoral condyle trial mold, an intercondylar trial mold, an intercondylar Processor and intercondylar osteotome, the intercondylar joint surface of described femoral condyle trial mold is matched with the joint curved surface of intercondylar trial mold; Described intercondylar processor comprises insertion end and connecting end, and described insertion end can be inserted with it In the intercondylar processor connecting hole on the matching femoral condyle trial mold, the connecting end can be connected with the intercondylar milling cutter and the intercondylar bone knife. The invention has the advantages of replacing the optimal operation plan and supporting tools at any time; reducing the number and cost of tools; ensuring the accuracy of the installation position of the prosthesis, reducing the mutual matching of various parts during the operation; and realizing effective bone saving.

Description

technical field [0001] The invention belongs to the technical field of medical device design, in particular to a CR-type and PS-type femoral condyle test mold and an intercondylar processor function integrated structure. Background technique [0002] At present, CR or PS knee joint prosthesis can be selected according to the type of indication for knee surgery, the severity of the disease, the range of motion of the knee joint before surgery, and the balance of the ligaments. [0003] The CR type is also known as the posterior cruciate ligament-retaining knee prosthesis. Because it retains the posterior cruciate ligament, it also preserves the bone mass of the intercondylar notch of the femur. No special tools are needed to process the intercondylar notch during the operation, which is conducive to future revisions Surgery; the PS type is also known as the non-preserving posterior cruciate ligament knee prosthesis. Because it does not retain the posterior cruciate ligament, ...

AI Technical Summary

Problems solved by technology

Its disadvantages are as follows: 1. If the CR prosthesis is decided according to the X-ray film and the patient’s movement during preoperative planning, but due to problems such as ligament balance and joint stability, it needs to be temporarily changed to a PS prosthesis in order to facilitate postoperative recovery. The joint stability is better, and the patient's joint function recovery is better, but it is more difficult to achieve because the PS-type femoral condyle trial model is not prepared in advance; 2. If both CR-type and PS-type femoral condyles are prepared For condylar mold testing, the tools are heavy and inconvenient to transport, and the qualified standards for aseptic disinfection of the tools in the operating room cannot be met: because the total volume of the disinfection tools is too large and the weight is too large, the pressure of the disinfection box will not penetrate, so the disinfection cannot reach the aseptic level of the operation Require

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