Connection rod of thoracolumbar vertebral fracture posterior minimally-invasive screw-rod system

Abstract

The invention provides a connection rod of a thoracolumbar vertebral fracture posterior minimally-invasive screw-rod system. The connection rod is characterized in that the connection rod is a T-shaped rod; a main rod (1) is arranged at the far end of the T-shaped rod and a T-shaped handle (2) is arranged at the near end of the T-shaped rod; a tapered tip (3) is arranged at the tail end of the main rod; a positioning sheet (4) is arranged at the near end of the main rod; the T-shaped handle is provided with an arc-shaped arm (5); a connection rod self-shearing mark (6) is arranged at the connection part of the main rod and the arc-shaped arm. The sizes of the system parts are as follows: the diameter of the T-shaped rod is 6mm to 8mm and the length of the T-shaped rod is 40mm to 450mm; the diameter of the positioning sheet is 8mm to 10mm and the thickness of the positioning sheet is 1mm to 2mm; the radian of the arc-shaped arm is 0 to 45 degrees; the T-shaped rod is arranged as a hollow T-shaped rod and a solid T-shaped rod. The connection rod has the advantages that 1, the T-shaped rod is designed so that the main rod can be prevented from rotating; the positioning sheet is designed so that the main rod can be prevented from being excessively inserted; the connection rod self-shearing mark is designed so that the T-shaped handle can be automatically sheared; the arc-shaped arm has arc-shaped design so that the main rod can be prevented from being inserted into muscles; 2, the T-shaped rod is designed into the two types including the hollow T-shaped rod and the solid T-shaped rod so that the selection of the diameter of the connection rod is easily selected.

Description

technical field [0001] The invention is applied to clinical orthopedics, is an internal fixation system for thoracolumbar fractures, and belongs to medical equipment. It is used as an internal fixation device for closed reduction and internal fixation of human thoracic and lumbar posterior longitudinal ligament intact but unstable fractures. The application of the device not only helps to reduce the operation trauma, but also helps to reduce the operation and hospitalization time. Background technique [0002] The treatment of thoracolumbar fractures is developing and changing. Roy-Camille et al. began to use pedicle screws and plates for internal fixation of thoracolumbar fractures in 1961. After half a century of clinical application and multi-center research and analysis, it is believed that pedicle screws are effective in treating thoracolumbar fractures. The posterior internal fixation system has also evolved from the nail-plate to the nail-rod system. Surgical trau...

AI Technical Summary

Problems solved by technology

However, obtaining and maintaining closed reduction of the thoracolumbar spine is quite difficult

There are relevant internal fixation devices on the market now, but there is still room for improvement

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