Lumbar interbody fusion fixing device adopting automatic screws for fixing

Abstract

The invention discloses a lumbar interbody fusion fixing device adopting automatic screws for fixing. The lumbar interbody fusion fixing device comprises a body made of polyetheretherketone (PEEK) and a fixing part made of a titanium alloy material. The fixing part is connected with the tail end of the body. A developing part made of a titanium alloy material is arranged on the body and used as a structure mark in the position 1.0-1.5 mm away from the front end of the body during imaging. The lumbar interbody fusion fixing device adopting the automatic screws for fixing can be used for minimally invasive channel placement, including direct lateral interbody fusion (DLIF) and oblique lumbar interbody fusion (OLIF). According to the lumbar interbody fusion fixing device adopting the automatic screws for fixing, the body and the fixing part can be placed inwards together, unnecessary shifting is prevented, fixing is firm, the surgical steps can be simplified through together placement, the surgical time is shortened, the surgical difficulty is lowered, and intraoperative injury of a patient is reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an automatic screw-fixed lumbar intervertebral fusion fixation device. Background technique [0002] Lumbar interbody fusion is widely used in lumbar degenerative disc diseases, such as lumbar disc herniation, lumbar spinal stenosis, spondylolisthesis, and lumbar degenerative scoliosis. The more traditional surgical methods include posterior lumbar interbody fusion (TLIF and PLIF) and anterior lumbar interbody fusion (ALIF). Although the posterior fusion surgery has a definite curative effect and a high fusion rate, it still has some shortcomings, such as muscle denervation caused by dissection of the paraspinal muscles and chronic low back pain, adhesion and scarring of tissues inside and outside the spinal canal and around nerve roots, and intervertebral disc The resection range is small, resulting in residual nucleus pulposus tissue and recurrence of lumba...

AI Technical Summary

Problems solved by technology

However, the use of nail-plate or nail-rod auxiliary fixation is difficult to locate and cumbersome to operate. The lumbar nerve often crosses the surface of the implant, which will stimulate the lumbar nerve and cause nerve damage, and it can still be observed in clinical practice that the joint application of nail-rod or nail-plate system Patient with fusion cage displacement

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