Instrument for safely manufacturing posterior cruciate ligament tibia tunnel

Abstract

The invention discloses an instrument for safely manufacturing a posterior cruciate ligament tibia tunnel. The instrument comprises a guide pin, a guide pin drilling device, a hollow drill, a hollow drill drilling device and an electric drill for orthopaedics and is characterized in that the surface of the guide pin is carved with a guide pin drilling-in mark and a hollow drill drilling-in mark, a tibia tunnel center guide pin locator is provided with a guide pin depth limiting sleeve, a hollow drill gripped end is provided with a drill jig gripping mark, and the hollow drill drilling device is provided with a guide pin fixer and a hollow drill depth limiting sleeve. Through the clinical application of the instrument, operators can accurately control the guide pin and the hollow drill to drill through the tunnel, and the injury to nerve blood vessels due to the fact that the guide pin and the hollow drill are drilled in too deeply and the guide pin moves along with the hollow drill is effectively avoided, so that the posterior cruciate ligament tibia tunnel is manufactured rapidly and safely.

Description

technical field [0001] The invention relates to the technical field of orthopedic surgery, in particular to reconstruction surgery of the posterior cruciate ligament of a knee joint, in particular to a device for safely manufacturing a posterior cruciate ligament tibial tunnel. Background technique [0002] When the posterior cruciate ligament reconstruction surgery is used to make a tibial tunnel, the center guide needle of the tunnel must be inserted first, and then a hollow drill is used to drill through the bone along the guide needle to make a tibial tunnel. The inner opening of the tunnel is located at the back of the knee joint. During the operation, there is still a possibility of “missing”, which may lead to the too deep drilling of the guide needle, the too deep drilling of the hollow drill, or the movement of the guide needle with the hollow drill, resulting in the possibility of damage to the popliteal fossa neurovascular. Although there are clinical methods to a...

AI Technical Summary

Problems solved by technology

[0002] When the posterior cruciate ligament reconstruction is used to make the tibial tunnel, the guide pin in the center of the tunnel must be inserted first, and then a hollow drill is used to drill through the bone along the guide pin to make the tibial tunnel. The inner opening of the tunnel is located at the back of the knee joint. During the operation, there is still the possibility of "mishandling" and causing the guide needle to penetrate too deep, the cannulated drill to penetrate too deep, or the guide needle to move with the cannulated drill, resulting in the possibility of neurovascular injury in the popliteal fossa

Although there are clinical methods to avoid drilling too deep by measuring the length of the tunnel and installing a depth-limiting module on the surface of the guide pin and the hollow drill, the method is cumbersome, time-consuming, and has poor accuracy, and cannot limit the forward movement of the guide pin and the hollow drill.

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