Spondylolisthesis repositioning device and repositor thereof

Abstract

The invention discloses a spondylolisthesis repositioning device and repositor thereof, which is used for repositioning the olisthed vertebral column in the spondylolisthesis repositioning operation. The repositor comprises a fixing arm, a repositioning arm, an adjusting arm and a driving device, wherein the first end of the fixing arm is hinged with the first end of the repositioning arm; the first end of the adjusting arm is hinged with the middle part of the fixing arm, the second end of the adjusting arm and the middle part of the repositioning arm are glidingly connected along the extending direction, and the middle part thereof is connected with the driving device. The driving device is used for driving the adjusting arm to move and driving the first end of the adjusting arm to swivel relative to the fixing arm and the second end thereof to glide along the extending direction of the repositioning arm so as to change the distance and the angle between the fixing arm the second section of the repositioning arm and finally reach the purpose of spondylolisthesis repositioning. The repositor provided by the invention has a simple structure and easy operation, which can effectively reduce the difficulty and risk of operation so as to enhance the safety and reliability of operation.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a reset device used for a spinal slip reduction device. In addition, the present invention also relates to a spinal spondylolisthesis reduction device comprising the above-mentioned resetter. Background technique [0002] Lumbar spondylolisthesis and lumbar disintegration are common clinical diseases, accounting for 5% of the total number of low back pain patients. May be complicated by intervertebral disc herniation, spinal stenosis, and even incomplete paraplegia. Since Hibb pioneered posterior laminar fusion in 1911 to treat lumbar spondylolisthesis, Bosworth improved fusion with "H"-shaped bone graft in 1952, and Watkins pioneered posterolateral fusion between transverse processes in 1953. 96%, but the incidence of pseudarthrosis is as high as 15% to 40%. In 1971, Freebody wound anterior intervertebral fusion, which directly fused the spondylolisthesis, but the nonunion ...

AI Technical Summary

Problems solved by technology

[0003] At present, the reduction of vertebral spondylolisthesis is achieved through internal implants and supporting tools. The operation is cumbersome and the connection is complicated; the operation of supporting surgical instruments is complicated, the operation is difficult, and the requirements for doctors are high; and it is easy to cause reduction. Loss, the risk of surgery is very high, and it is difficult to guarantee safety and reliability

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