Connecting mechanism of vertebral column fixing system

Abstract

The invention relates to a connecting mechanism of a vertebral column fixing system, in particular to a connecting mechanism of an angle-adjustable vertebral column fixing system. The connecting mechanism comprises a bone fixing device, a first connecting rod, a second connecting rod, an annular linear, a first connecting cup, a second connecting cup and a fixing apparatus, a proximal end of the bone fixing device is a connecting end, the bone fixing device is remotely used for fixing a vertebral column osteocomma to be fixed, the connecting end is provided with a socket portion, the annular linear is used for being placed between the first connecting rod and the second connecting rod and respectively matches with a contact surface of the first connecting rod and a contact surface of the second connecting rod, cup opening ends of the first connecting cup and the second connecting cup are provided with connecting mechanisms, the connecting mechanism of the cup opening end of the first connecting cup and the connecting mechanism of the cup opening end of the second connecting cup are autogenously connected, and the fixing apparatus is used for fixing the connecting cups onto the socket portion of the bone fixing device. By the aid of the autogenous connection of the first connecting cup and the second connecting cup, an integral cup is formed, and structural complexity and the like of the connecting mechanism of the fixing system are reduced.

Description

technical field [0001] The invention relates to a linking mechanism of a spinal fixation system, especially a linking mechanism of an adjustable-angle spinal fixation system. Background technique [0002] In spinal fixation surgery, fixation rods are often used as auxiliary fixation devices, but because the spine is not in a straight line, the joints of the spine are usually not parallel, such as lordosis in the lumbar spine. Therefore, if the fixed rods that are originally in a straight line are directly combined and fixed with a plurality of bone screws implanted in the vertebral joints to be fixed, it will force the vertebral joints to be fixed that are not in a straight line to become in a straight line, and make the original non-linear The parallel vertebrae to be fixed become parallel. [0003] In order to avoid the above deficiency, the medical community has proposed various improved structures, such as: [0004] 1. Solve the problem with angled screws (angled screw...

AI Technical Summary

Problems solved by technology

[0010] After these methods, although the affected part has dynamic functions after surgery, such as extension, flexion, lateral bending, and axial torsion, the design is poor in stability and has the risk of loosening At the same time, it also takes up a lot of space, and this design has no cushion function

[0011] The Chinese Taiwan patent TW-200936097 of the present inventors utilizes a ball arc device and an elastic design to enable the spinal fixation rod to have the above-mentioned dynamic functions at the same time, such as extension, flexion, lateral bending, and twisting. (axial torsion) and cushioning (cushion) functions, but this patent utilizes an additional connection device to allow the first cup and the second cup to be connected, so that the spinal fixation device will require increased space, and the operation Inconvenient and time-consuming

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