Intervertebral space maintaining distraction device for lumbar anterior surgery

Abstract

The invention belongs to the technical field of medical instruments, and particularly discloses an intervertebral space maintaining distraction device for an anterior lumbar surgery, which comprises a distraction block, a threaded hole formed in one end of the distraction block and a positioning cavity adjacent to the threaded hole, and further comprises a sleeve, a positioning block matched with the positioning cavity is arranged at one end of the sleeve, and a rotating shaft is sleeved with the sleeve; a first check block is arranged on the rotating shaft and located on one side of the positioning block, a second check block is detachably connected to the other side of the rotating shaft, and one end, located on the first check block, of the rotating shaft can be in threaded connection with the threaded hole; the connecting rod is coaxially and detachably connected with the end, away from the positioning block, of the sleeve; an opening is formed in the end, close to the sleeve, of the connecting rod in the axial direction of the sleeve; and one end of the rotating rod is connected with a sleeve cap which can be buckled with the second check block. According to the scheme, a brand-new surgical instrument is constructed on the basis of an OLDF operation, and is mainly applied to oblique lateral lumbar intervertebral disc resection and fusion and used for maintaining intervertebral space distraction.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and specifically discloses a device for maintaining intervertebral space for lumbar anterior surgery. Background technique [0002] Oblique Lateral Lumbar Interbody Fusion (OLIF) has been widely used in various degenerative lumbar diseases since it was officially proposed in 2012. In this operation, the working channel is placed through the natural gap between the left psoas major muscle and the anterior great vessel sheath, and the surgical treatment is completed from the oblique lateral approach. A larger intervertebral fusion device is placed to expand the intervertebral space to reach the spinal canal And the indirect decompression effect of the intervertebral foramen, the purpose of restoring the intervertebral height. Nowadays, most scholars believe that because OLIF is not suitable for direct decompression, the indications for severe spinal stenosis or combined disc herniation are...

AI Technical Summary

Problems solved by technology

[0003] Due to the small surgical incision, long channel, and deep anatomical position of the OLDF operation, there is a surgical blind spot in the removal of the intervertebral disc tissue at the posterior edge of the vertebral body at this time, and the target area can only be reached by feeling, and the intervertebral disc cannot be cleaned very often. , especially for some patients with severe lumbar degeneration and significantly decreased intervertebral height, the intervertebral space is narrow, and it is more difficult to deal with the intervertebral disc and endplate, and it is difficult to clearly see the back of the intervertebral space. To perform distraction and maintenance, and to give the rear enough space for operation, a device for maintaining intervertebral space distraction for anterior lumbar surgery came into being

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