A lumbar facet joint tension band fixator

Abstract

The invention relates to a lumbar zygapophyseal joint tension band fixator. The lumbar zygapophyseal joint tension band fixator comprises a connecting component and a fixing component, wherein the fixing component is arranged at the front end of the connecting component and integrally formed with the connecting component, the fixing component is bionic claws, and the bionic claws comprise a first bionic claw, a second bionic claw and a third bionic claw. The fixator has the advantages that a half rigid fixation of facet joints behind a lumbar vertebra is achieved through a minimally invasive operation, so that the damage of muscle stripping in the waist and back of a patient is reduced, which is beneficial to the prognosis of the patient; fixation of a degenerated lumbar vertebra can be achieved through a pair of pedicle screws and two fixators, so that the operation efficiency is improved; a three-point fixation is conducted through the bionic claws, so that the stability is improved; needed operational material is saved, and medical cost is reduced; the structure is simple, and the use is easy, so that popularization and application are facilitated.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a lumbar facet joint tension band fixer. Background technique [0002] Non-rigid fixation of the lumbar spine is one of the methods for the treatment of lumbar degenerative diseases. Compared with pedicle screw fixation and intervertebral fusion, this method is beneficial to avoid the occurrence of adjacent segment degeneration. Although there are many kinds of devices for non-rigid fixation of the lumbar spine produced and put on the market at home and abroad, there are more or less unreasonable or deficient parts in the structural design. Even some fixed instruments lead to complex structures in order to expand the range of clinical applications. In clinical use, it is difficult to master, which increases the difficulty of operation. Various complications are likely to occur after use, such as easy loosening, broken internal fixation, loss of angle, etc. Even so,...

AI Technical Summary

Problems solved by technology

However, this device needs to be fixed with multiple lumbar screws, which is easy to cause damage to the normal lumbar spine of the patient.

[0005] Therefore, there is an urgent need for a fixer that can be implanted through minimally invasive surgery, avoid causing too much muscle damage in the rear, is fixed firmly, is not easy to fall off, and is simple and quick to use, but there is no report about this fixer at present.

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