Anterior cruciate ligament stump expander

Abstract

The invention discloses an anterior cruciate ligament stump expander. The anterior cruciate ligament stump expander comprises a guide needle, an expansion head, a push rod and a handle, wherein one end of the guide needle is a guide needle head, and the other end of the guide needle is connected with the handle; the expansion head is of a hollow structure internally provided with an elastic framework; the expansion head sleeves the guide needle; one end, close to the guide needle head, of the expansion head is a fixed end fixedly connected with the guide needle, and the other end, far away from the guide needle head, of the expansion head is a sliding end in sliding connection with the guide needle; the push rod is of a hollow pipe body structure; the push rod is arranged between the expansion head and the handle and sleeves the guide needle; and one end of the push rod is connected with the sliding end of the expansion head, and a locking part is arranged at the other end of the push rod. The anterior cruciate ligament stump expander is applied to the cruciate ligament residue protection reconstruction operation, the purpose that the residual ACL ligament wraps the graft to the maximum degree can be simply and efficiently realized, the intercondylar fossa collision is avoided, thus the postoperative complications are reduced, and the prognosis of the patient is improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an anterior cruciate ligament stump expander. Background technique [0002] Anterior cruciate ligament (ACL) injury is a common sports injury. The instability of the knee joint caused by ACL injury not only affects the daily life and sports of patients, but also further affects other structures in the joint. Therefore, in order to restore the stability of the knee joint, reconstruction of the injured ACL has reached a consensus. In traditional ACL reconstruction surgery, the ACL stump is usually dissected in order to clearly expose the footprints of the femoral and tibial insertions of the ACL. In recent years, scholars at home and abroad have focused their research on ACL ligament reconstruction not only on the recovery of biomechanical function after reconstruction, but also on the impact of ACL biological healing and proprioceptive recovery on knee joint motion. ...

AI Technical Summary

Problems solved by technology

At present, the preservation of the ligament stump in patients with ACL rupture has gradually been recognized by clinicians. The ideal residual ligament is of course to completely surround the graft without causing impingement of the intercondylar fossa or cyclopia deformity, resulting in limited extension. However, in clinical practice, the existence of the stump often leads to blurred vision, inaccurate positioning, difficulty in reaching the situation where the residual ligament wraps the graft, and may even lead to frontal impingement caused by too much forward movement of the stump

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