Anterior cruciate ligament femoral side tunnel ligament fixator

Abstract

The invention relates to an anterior cruciate ligament femoral side tunnel ligament fixator. The anterior cruciate ligament femoral side tunnel ligament fixator comprises a ligament fixator shell, a ligament compression bolt and an anchor-specific push rod; the upper part of the ligament fixator shell is open, the middle part of the ligament fixator shell is a cavity, the cavity is a ligament compression bolt mounting channel, the ligament compression bolt mounting channel is surrounded by a ligament anchor sidewall, and the outer side of the ligament anchor sidewall is provided with downward inclined anchor anti-slip spurs; the bottom of the ligament fixator shell is a ligament fastening channel, the ligament fastening channel is an arched channel, the opening of the arched channel is formed in the bottom of the ligament fastening channel, and the upper part of the arched channel is connected to the lower end face of the ligament compression bolt mounting channel. When the anterior cruciate ligament femoral side tunnel ligament fixator is in use, an anchor is pushed into a bone tunnel through the anchor-specific push rod without using a wired guide needle for penetrating the femoral cortex and using a lead for pulling the guide needle into the tunnel, and thus injury to blood vessels and nerves is avoided.

Description

technical field [0001] The invention relates to the field of medical auxiliary equipment, in particular to an anterior cruciate ligament femoral side tunnel ligament fixer. Background technique [0002] Anterior cruciate ligament rupture is a common type of knee sports injury, and arthroscopic reconstruction of the anterior cruciate ligament can restore the function of the anterior cruciate ligament and maintain the stability of the knee joint. Anterior cruciate ligament reconstruction is to select autologous or allogeneic tendon as a graft to replace the ruptured anterior cruciate ligament, then make bone tunnels on the femoral side and tibial side, and finally fix the ligaments in the tunnels at both ends (see figure 1 ). At present, common ligament fixation methods include extrusion screw fixation and suspension plate fixation. The extrusion screw fixation method uses screws to compress and fix the ligament in the bone tunnel, but the disadvantages of this fixation metho...

AI Technical Summary

Problems solved by technology

At present, common ligament fixation methods include extrusion screw fixation and suspension plate fixation. The extrusion screw fixation method uses screws to compress and fix the ligament in the bone tunnel, but the disadvantages of this fixation method mainly include: ①When rotating It is easy to twist and damage the ligament, causing additional damage to the ligament; ② causing bone resorption, causing the expansion of the bone tunnel and loosening of the graft, resulting in surgical failure

Suspension plate fixation is to fix the ring plate on the outer side of the femoral cortex to provide pull-out resistance. Since there is no effective extrusion force between the ligament and the bone tunnel, the relative sliding of the ligament and the bone tunnel is prone to occur, resulting in the "wiper effect". or "pendulum effect," causing ligament wear and tear

In addition, the above two fixation methods need to use a guide wire with a wire to penetrate the femoral cortex, and use a guide wire to pull the ligament into the tunnel. This operation is easy to damage blood vessels and nerves.

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