An extramedullary positioning device for knee joint replacement femur

Abstract

The invention relates to the technical field of knee joint replacement, in particular to a femur extramedullary positioning device for knee joint replacement, which includes a device main body, a positioning mechanism, an adjustment mechanism, a fastening mechanism, a limit mechanism and a disinfection mechanism; The mechanism is placed inside the main body of the device, and through a series of gear screw transmission components, it is convenient to move and adjust itself, and then it is convenient to apply to knee femoral heads of various sizes; the adjustment mechanism is placed inside the positioning mechanism, through the corresponding The unique spring gear structure facilitates the retraction of the positioning mechanism, facilitates the storage and folding of the entire device, and reduces the occupied space; the limit mechanism is set inside the side wall near the top of the positioning mechanism and on the inner wall of the main body of the device. When recovering, it is also convenient to limit the position of the positioning mechanism; the disinfection mechanism is set at one end of the main body of the device, and the similar piston injection component is used to facilitate the disinfection of the positioning components on the positioning mechanism.

Description

Technical field [0001] The present invention relates to the field of knee joint replacement techniques, and is specifically a knee joint replacement bone marrow outer positioning device. Background technique [0002] The knee replacement is currently widely used in clinical, which is an absolute operation of the patient's knee pain deformity in the syndrome of the elderly patients. However, surgery also brought a lot of risks, due to the relatively large surgical trauma, the surgical infection, bleeding, pulmonary embolism, etc. also brought a lot of problems. Thus, the most critical efficacy of knee joint surgery is still surgical techniques. The tibial positioning system is currently recognized as a binding positioning. Because the tibia is relatively compared, the opposite of the force line is relatively accurate, and there is a certain controversy, which is a certain controversy, mainly the binding computer navigation positioning. Positioning with traditional femoral marrow. ...

AI Technical Summary

Problems solved by technology

[0003] In knee replacement surgery, extramedullary positioning of the femur usually requires a special positioning device. However, due to the large differences in the size and shape of the knee femur in different patients, the traditional positioning devices are mostly fixed and difficult to adapt to various Knee femurs with large differences; and most of the traditional limit devices have multiple rods or limit rods extending to the outside of the device, which occupy a large space and are not convenient for storage; at the same time, after use or when needed , it is not convenient to directly sterilize the positioning components of the positioning device

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