Knee joint revision file

Abstract

The invention discloses a knee joint revision file which comprises a file body, the file body is of an ellipse-like cylinder structure extending towards the two ends and can also serve as a mold testing tool, and the file body comprises a first end face and a second end face; the side ring surface is a conical surface, and the two ends of the side ring surface extend to be connected with the first end surface and the second end surface respectively; and the plurality of filing teeth are distributed on the side ring surface. The knee joint revision file is designed to be of the structure consistent with the shape of the middle part, implanted into the medullary cavity, of the revision prosthesis, stability and accuracy of revision bone grafting can be promoted, and on the basis, due to the fact that the shape of the revision file is consistent with the shape of the middle part, implanted into the medullary cavity, of the revision prosthesis, after hole filing is completed, the revision bone grafting is completed. In addition, the revision file can be used as a test mold for revision of the prosthesis to simulate the fixing state of the prosthesis in the medullary cavity, so that the time for searching a test mold with a proper specification can be shortened, meanwhile, the material consumption of a test mold tool can be reduced, and the revision operation can be smoothly carried out.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to a knee joint revision file. Background technique [0002] In recent years, the number of knee revision cases has increased significantly. The obvious reason is that with the rapid development of the social economy and the continuous improvement of the level of science and technology, people have higher and higher requirements for the quality of life, resulting in a significant increase in the number of total knee replacement surgeries. It will fail due to wear, infection, aseptic loosening, etc., and knee joint function needs to be reconstructed through knee joint revision; also, patients undergoing total knee replacement surgery are getting younger and younger, and patients are gradually undergoing total knee replacement surgery ( TKA) method, hoping to meet the needs of high activity through TKA surgery, resulting in total knee replacement surgery unable to meet t...

AI Technical Summary

Problems solved by technology

However, there are certain defects in this method: after the operation of the current surgical tool, the reaming hole after the osteotomy has a low degree of matching with the shape of the actual implanted revision prosthesis, so that the difference between the two may be caused by the patient's bone. Differences in implant height or low stability have certain risks to the success rate of revision surgery and the recovery of patients

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