A device for repairing a ligament or tendon defect

Abstract

The invention discloses an apparatus for repairing ligament or tendon defect, wherein the apparatus comprises a fastening screw front section and a fastening screw rear section which is detachably connected to the fastening screw front section; a self-tapped outer screw thread which can be tapped into bone is formed in the fastening screw front section; an outer screw thread which is continuously butted with the self-tapped outer screw thread of the fastening screw front section is formed in the outer surface of the fastening screw rear section; the outer surface of the fastening screw rear section is made from a material which can be healed with bone. The apparatus disclosed by the invention, by virtue of sectional and detachable design as well as pressurizing design, can achieve various functions through different structures, shapes and materials of the fastening screw front section and the fastening screw rear section, and can realize functional complementation of the fastening screw front section structure and the fastening screw rear section structure, so that physical fixation and biological healing fixation are combined to continuously keep an effective fixation strength; and the apparatus can be used for effectively regulating the tension of reconstructed ligaments or tendons, improving surgical precision, enabling a surgical object to freely move and act even in early stage, enhancing the curative effect of surgery and significantly reducing the difficulty of a ligament or tendon reconstruction surgery.

Description

technical field [0001] The present invention relates to a device for fastening tendons, ligaments and bones, in particular to a device for repairing tendon or ligament defects. Background technique [0002] Human tendons are located at the two ends of skeletal muscles and attached to two or more bones. It pulls the contraction of skeletal muscles to drive the movement of different bones. Human ligaments connect bone to bone, mostly located around joints, strengthen and maintain the stability of joints in motion, and limit their activities beyond the physiological range. Tendons and ligaments can realize force transmission and are the key links in various activities of the human body. With the increase of traffic trauma and sports injuries, the incidence of tendon and ligament injuries is increasing. If not treated effectively, it will seriously affect the stability of joints, affect people's daily activities, and even cause disability. [0003] Due to the certain elasticit...

AI Technical Summary

Problems solved by technology

First, ligament tension cannot be adjusted after fixation

The current fixation methods for repairing ligament or tendon defects are to first establish a fixed point at the starting and ending points of the ligament or tendon, and then pull the ligament or tendon from the rupture point to the fixed point by suture suture or hanging compression In fact, once fixed, it is difficult to adjust the tension of the ligament (or tendon), otherwise it is easy to cause loosening of the fixation; and this kind of traction maintains the tension and fixation of the ligament (or tendon) and it is difficult to restore the normal traction of the repaired ligament (or tendon) tension

Second, the long-term loosening rate is high

This technical solution cannot completely avoid the defect of low healing ability between the graft and the bone; its structural design still has the defect of being unable to adjust the tension of the ligament; its long-term healing method is the same as the current ligament (or tendon) defect repair method, without Provides long-term healing stability superior to currently applied methods

[0014] All in all, the current reconstruction and repair devices and methods for ligament (or tendon) defects are restricted by the source of ligament (or tendon) substitutes, and the long-term ligament (or tendon)-bone healing rate is difficult to guarantee, and it is difficult to fix the The ligament (or tendon) is strengthened to the optimal tension state. Once it is fixed, it is difficult to adjust the tension, so that the function of the repaired ligament (or tendon) varies greatly, and satisfactory curative effect cannot be achieved. Patient Brings Further Suffering

Images