Lumbar vertebrae intervertebral fusion machine

Abstract

The invention discloses a horizontal-expansion lumbar vertebrae intervertebral fusion machine which can achieve minimally invasive implantation and relates to the field of medical apparatus and instruments. The fusion machine comprises a fusion machine body and a movable part, the movable part is arranged to slide along an inner cavity of the fusion machine body, a blocking part is fixedly arranged at one end of the fusion machine body, and the blocking part is arranged to prevent the movable part from being separated from the fusion machine body. The upper side surface and the lower side surface of the fusion machine body are provided with rough patterns. The inner cavity is provided with a first hole which runs through the inner cavity up and down and / or a second hole which runs throughthe inner cavity front and back. According to the lumbar vertebrae intervertebral fusion machine, the three-dimensional scale of the fusion machine is small before the fusion machine is spread, the fusion machine can be horizontally spread and expanded after the fusion machine is invasively implanted into the intervertebral gap through the intervertebral hole admission passage, the large bone grafting bed area can be provided, the main body supporting area that the fusion machine is in contact with an end plate is also greatly increased compared with a traditional fusion machine, the good initial stability can be achieved, the intervertebral fusion rate can be further improved, and the fusion machine helps to effectively lower sedimentation of the fusion machine.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a horizontally expanding lumbar intervertebral fusion device capable of minimally invasive implantation. Background technique [0002] Lumbar interbody fusion is a basic technique for the treatment of lumbar diseases. It is commonly used in the treatment of lumbar instability, lumbar spinal stenosis, degenerative spondylolisthesis, degenerative scoliosis, degenerative disc disease and lumbar facet syndrome, etc. disease. Transforaminal lumbar interbody fusion (TLIF) was first reported by Harms and Rollinger in 1982. It can effectively reduce the interference with the structures in the spinal canal, avoiding the stimulation and harm to the nerve roots and dura mater. damage, reducing the scope of surgery. Fusion cages are crucial to the success of lumbar interbody fusion surgery, and their shape design, material properties and implantation methods all directly determine the effect...

AI Technical Summary

Problems solved by technology

[0009] The bone graft window of the currently used fusion device is open. After the granular bone is implanted, the granular bone may fall off from the fusion device and enter the spinal canal or intervertebral foramen to compress the dural sac or nerve root and cause corresponding postoperative neurological symptoms.

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