Tibial shim for knee joint

Abstract

The invention relates to a tibial shim pad for a knee joint. The tibial shim is used in cooperation with a test mode prosthesis and a test condyle prosthesis, and the tibial shim includes a shim basematched with the test mode prosthesis, a shim main body matched with the test condyle prosthesis and a connection mechanism for connecting the shim base and the shim main body, the connection mechanism includes a clamping part for connecting a force line handle, and the clamping part can disconnect from the force line handle after being placed between the test mode prosthesis and the test condyleprosthesis. The assembly and disassembly of the tibial shim can be easily completed with the help of the force line handle, and compared with a manual disassembly and assembly method of an integratedtibial shim in the prior art, the assembly and disassembly method provided by the invention effectively shortens the surgery time; and the tibial shim for the knee joint provided by the application iscomposed of the shim base, the shim main body and the connection mechanism, can realize the mass production of the shim base and the connection mechanism, is beneficial to reducing the preparation costs, effectively reduces the occupied space of the tibial shim during a surgery, and is beneficial to progress of the surgery.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a knee joint tibial spacer. Background technique [0002] In knee arthroplasty, a trial condyle prosthesis and a trial mold prosthesis are installed on the femur and tibia, respectively, from which damaged bone has been removed, and then tibial spacers are installed on the trial condyle prosthesis and trial mold prosthesis. Between the body, through the cooperation with the trial condyle prosthesis and the trial model prosthesis, the normal use of the patient's knee joint can be restored. [0003] There are many types of commonly used knee tibial spacers, and in order to meet the installation requirements of trial condyle prosthesis and trial mold prosthesis, each type of tibial spacer needs to be prepared with a series of different specifications for surgical needs, which makes the operation When in use, the space occupied by the tibial spacer is too large a...

AI Technical Summary

Problems solved by technology

[0003] There are many types of commonly used knee tibial spacers, and in order to meet the installation requirements of trial condyle prosthesis and trial mold prosthesis, each type of tibial spacer needs to be prepared with a series of different specifications for surgical needs, which makes the operation When in use, the tibial spacer takes up too much space and is not easy to find, which affects the normal operation

[0004] Due to the different degrees of bone removal during the actual operation, when the tibial spacer installed by the medical staff does not meet the distance requirements between the trial condyle prosthesis and the trial model prosthesis, the tibial spacer needs to be removed and replaced. The existing technology is integrated. The traditional tibial spacer mainly relies on manual installation, which has the problem of difficulty in disassembly and assembly, which in turn delays the operation time

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