Lower tibiofibular joint hinged flexible fixator

Abstract

The invention discloses a distal tibiofibular syndesmosis hinge type flexible fixing device. The distal tibiofibular syndesmosis hinge type flexible fixing device comprises a universal fibula screw and a tibia screw, wherein the inner portion of the tibia screw is hollow, the tibia screw is connected with a first pressing nail and a second pressing nail, an integral ball socket hole is formed in an end portion of the tibia screw after the tibia screw is connected with the first pressing nail, one end of the universal fibula screw is a ball-shaped head portion, and the ball-shaped head portion is connected into the ball socket hole to form hinge type connection. The distal tibiofibular syndesmosis hinge type flexible fixing device is clinically used for treating distal tibiofibular fractures and distal tibiofibular syndesmosis separation diseases and is a flexible internal fixation device which conforms to human biomechanics. The ball-shaped head portion of the universal fibula screw is connected into the ball socket hole of the tibia screw, the integral ball-shaped hinge type connection is formed through the first pressing nail, and therefore the requirement that the universal tibia screw has enough mobility in any direction can be met. Stable internal fixation can be provided for distal tibiofibular syndesmosis, meanwhile, the requirement of tibiofibular syndesmosis for normal physiological activities can be met, and no nail breaking phenomenon can be produced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a human internal fixator, in particular to an orthopaedic lower tibiofibular joint hinge type flexible fixator. Background technique [0002] The ankle joint bears a lot of load when standing, walking, running and jumping. The inferior tibiofibular syndesmosis is of great significance to maintain the integrity and stability of the ankle joint. Ankle joint injuries are often accompanied by lower tibiofibular separation. After reduction, it is difficult to maintain a solid fixation. Rigid fixation methods such as screws, steel bolts, plates and screws are usually used. The fibula has a certain movement relative to the tibia, and strong internal fixation will hinder the normal physiological activity of the lower tibia and fibula, making the ankle joint unable to get early exercise, and even causing bone compression necrosis, screw loosening or even screw fracture, and the oper...

AI Technical Summary

Problems solved by technology

The fibula has a certain degree of movement relative to the tibia, and the strong internal fixation will hinder the normal physiological activities of the lower tibia and fibula, so that the ankle joint cannot be exercised early, and even cause bone compression necrosis, screw loosening or even screw breakage, and the operation fails.

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