Inferior tibiofibular bolt elastic fixing device

Abstract

The invention relates to an inferior tibiofibular bolt elastic fixing device, which comprises an elastic rod, cones arranged at both ends of the elastic rod, a connecting rod and a nut, wherein the cones are vertical to the elastic rod; one end of the connecting rod is fixedly connected with the middle part of the elastic rod while the other end of the connecting rod is provided with an external thread part; and the nut is screwed with the external thread part. With the adoption of the structure, when the inferior tibiofibular bolt elastic fixing device is used, a tunnel is drilled through the middle of the tibiofibula by a drill, the connecting rod passes through the tunnel, and the external thread part of the connecting rod is screwed with the nut; and tips of the cones on the elastic rod are embedded into the tibia to different extents, so that over-shift front and back and up and down of the tibiofibula and loss of reset are avoided. The surgical procedure is not only minimally invasive, but also has great value for improving the surgical quality, shortening the surgical time, reducing the intraoperative hemorrhage and shortening the postoperative rehabilitation periods of a patient.

Description

Technical field [0001] The invention relates to a medical device, in particular to a micro-movement fixing device for the healing of the syndesmosis of the tibia and fibula. Background technique [0002] In daily production and life, there are often simple injuries or combined injuries of the syndesmosis due to accidents including exercise. The domestic fixation mainly uses the inferior tibiofibular screws, but there are certain disadvantages such as loosening and breaking of the screws, especially Before walking down the feet, the screws need to be removed to avoid screw breakage, etc., and screw fixation is not conducive to the restoration of the physiological healing properties of the ligament itself. Only elastic fretting fixation can achieve this goal, so foreign countries have begun to turn to elastic fretting fixation in recent years Development, application and design are also touched in China. At present, the existing elastic micro-movement fixation technology: the fore...

AI Technical Summary

Problems solved by technology

[0002] In daily production and life, accidents, including sports, often cause simple or combined injuries of the syndesmotic syndesmosis. Domestic fixation mainly uses inferior tibiofibular screws, but there are certain disadvantages such as screw loosening and breakage, especially The screws need to be taken out before walking on the ground to avoid screw breakage, and screw fixation is not conducive to the restoration of the physiological healing properties of the ligament itself. Only elastic fretting fixation can achieve this purpose, so foreign countries have turned to elastic fretting fixation in recent years. Research and development, domestic applications and designs are also involved

At present, the existing elastic micro-movement fixation technology: the first type of suture (Suture) tightening device can foresee a certain degree of displacement in the front-back or up-down direction. There are reports abroad that the lower tibiofibular syndesmosis may be lost. Thus affecting the ligament healing to a certain extent and causing instability

Moreover, this button suture set is more expensive at present, and it is not widely available to the general public, so it is still fixed with cortical bone screws as the mainstream market; the second type: with the hook and loop as the main structure, although the lower tibia and fibula hook and loop have certain elasticity. , in line with the principle of biological elastic fixation of bones and joints, but the device structure, hook and loop fixation and removal operations are inconvenient, and the skin incision is large, so it is rarely used clinically

Images