Knee Joint Anterior Cruciate Ligament Femoral Tunnel Guiding and Positioning System

Abstract

The invention discloses a needle-exit direction guiding and positioning system for the femoral tunnel of the anterior cruciate ligament of the knee joint. A horizontal Kirschner wire channel is opened near the end surface, and the other end surface of the arcuate part is provided with a clamping part, and the lower end surface of the clamping part is respectively provided with a horizontal positioning channel and a vertical upward The fastening screw through hole, the axis of the positioning channel is consistent with the Kirschner wire channel axis, the fastening screw through hole is provided with internal threads, and the center of the rotating block is provided with a central hole. The invention has the advantages of simple structure and convenient use, and can provide accurate femoral tunnel direction for doctors.

Description

technical field [0001] The invention belongs to the field of guidance and positioning system for the exit direction guidance and positioning system of the femoral tunnel of the anterior cruciate ligament of the knee joint, and specifically relates to a guidance positioning system for the exit direction of the femoral tunnel of the anterior cruciate ligament of the knee joint. Background technique [0002] The anterior cruciate ligament of the knee joint, referred to as the anterior cruciate ligament, refers to the dense connective tissue attached to the medial surface of the femoral condyle of the knee joint. A ligament formed by the depression in front of the intercondylar crest of the tibial plateau. There are blood vessels nourishing and nerve distribution at both ends of the femoral and tibial insertions. The main function is to control the abnormal forward movement and rotation of the tibia of the knee joint, and cooperate with other static and dynamic stabilization dev...

AI Technical Summary

Problems solved by technology

;When the femoral tunnel is established, the 2.4mm guide pin can be directly seen at the needle entry point, and the length of the guide pin in the inner and outer soft tissue structures of the femur is greater than 60mm, resulting in that the outer needle exit point after the guide pin enters the bone is completely dependent on the surgeon Judging by experience, the direction of the guide pin is prone to serious deviation, resulting in an uncontrollable direction of the tunnel. It is only possible to adjust a good direction through multiple drillings of the guide pin.

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