Tunable with posterior cruciate ligament reconstruction tibia positioning device on dissection force line axis extension cord

Abstract

The invention relates to a tunable with posterior cruciate ligament reconstruction tibia positioning device on a dissection force line axis extension cord. The tunable posterior cruciate ligament reconstruction tibia positioning device includes a positioning arm and a handle, the rear end of the positioning arm is fixedly connected with the front end of the handle, a sliding block is arranged on the handle, a locking device for locking the sliding block is arranged on the sliding block, one end of a support rod is fixedly connected with the sliding block, the other end of the support rod is fixedly connected with a guide block, and a guide hole is formed in the guide block; a positioning tip at the front end of the positioning arm inclines to the left or the right, and the axis of the guide hole penetrates through the positioning tip. According to the tunable posterior cruciate ligament reconstruction tibia positioning device on the dissection force line axis extension cord, the positioning tip inclines to the exterior, and therefore the positioning tip can be located on a slope groove on the posterior cruciate ligament dissection force line axis extension cord behind the proximaltibia; meanwhile, the positioning tip deforms along the slope groove, passes through a posterior cruciate ligament stop and arrives at the inner side of the fossa intercondyloidea, an acute angle formed by a transplant and a tibia tunnel is successfully converted into two obtuse angles, pressure on the tibia tunnel and pressure on part of the transplant are reduced, abrasion caused by the edge ofthe tibia tunnel to the transplant is reduced, and a killer turn effect is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a tibial tunnel locator that can be adjusted on the extension line of the anatomical force line axis for reconstruction of the posterior cruciate ligament. Background technique [0002] Arthroscopic reconstruction of the posterior cruciate ligament is an effective method for the treatment of posterior cruciate ligament injuries, but there is still a big debate in the field of sports medicine, because the posterior cruciate ligament reconstruction has not achieved as effective and constant clinical effect as the anterior cruciate ligament reconstruction, relatively high failure rate. The most common technique used for PCL reconstruction today is the "transtibial" tunneling technique, through which a graft is introduced and secured within a bone tunnel. [0003] Patent document CN202604902U discloses a guider for reconstructing the posterior cruciate ligament combined with...

AI Technical Summary

Problems solved by technology

[0004] However, the existing posterior cruciate ligament tibial locator is mainly designed for the anatomical reconstruction of the posterior cruciate ligament. The positioning tip of the tibial locator can only reach about 1cm‐1.5cm below the articular surface, and the locator cannot reach beyond the anatomical insertion point.

If you press down forcibly so that the positioning tip reaches far from the anatomical insertion point, the body of the positioner will not fit the anatomical structure of the tibial plateau intercondylar area, and the positioner will easily shift and loosen

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