Femoral tunnel guiding and positioning device for anterior cruciate ligament reconstruction

Abstract

The invention relates to the technical field of medical instruments, and discloses a femoral tunnel guiding and positioning device for anterior cruciate ligament reconstruction. The femoral tunnel guiding and positioning device comprises a clamping piece; a thigh of a patient and a 3D printed femur can be clamped through a first spring clamp and a second spring clamp on the clamping piece; the femur of the patient is parallel to the 3D printed femur through an adjusting device; the tunnel exit position and the tunnel length can be determined on the 3D printed femur through a measuring scale, and the tunnel exit position and the tunnel length on the patient femur parallel to the 3D printed femur are determined after the tunnel exit position and the tunnel length on the 3D printed femur aredetermined, so that the direction and the length of the tunnel are conveniently controlled, and the risk of surgical failure is reduced; meanwhile, a kirschner wire outlet point can be prevented fromdeviating, the situation that the rear wall of the lateral condyle of the femur is broken due to deviation of the kirschner wire outlet point is avoided; and the femoral tunnel guiding and positioningdevice has the advantages of being novel in design, simple in structure, easy to operate, capable of preventing the kirschner wire outlet point from deviating and capable of conveniently controllingthe direction and length of a tunnel.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a femoral tunnel guiding and positioning device for anterior cruciate ligament reconstruction. Background technique [0002] The rupture of the anterior cruciate ligament will lead to instability of the knee joint, causing secondary damage to the knee joint and seriously affecting the function of the knee joint. At present, arthroscopic ligament reconstruction has become an effective method for the treatment of anterior cruciate ligament injury. The method of establishing femoral tunnel during operation is widely used to reconstruct femoral tunnel through drilling through anteromedial approach. [0003] Studies have reported that the length of the graft in the femoral tunnel will affect the tendon-bone healing and the stability of the knee joint. A short femoral tunnel will cause a decrease in the fixation strength of the graft and protrusion of the transverse femoral nai...

AI Technical Summary

Problems solved by technology

[0006] 1. When the femoral tunnel is established, only the entrance position can be directly seen. After the guide needle enters the femur, the needle exit point on the outside depends on the experience of the surgeon. If the needle exit point is located on the posterior side of the lateral femoral condyle, it may lead to a Rupture of the posterior wall of the condyle, affecting joint movement after surgery

[0007] 2. It is difficult to control the length of the femoral tunnel. If the tunnel is too short, it will make it difficult to fix the suspension plate

However, the above-mentioned patent still has certain deficiencies, for example, it is difficult to control the direction and length of the tunnel, and its practicability is poor.

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