Processus spinosus expanding device for lumbar vertebrae

Abstract

The invention discloses medical instruments and particularly provides a processus spinosus expanding device for lumbar vertebrae. The device comprises a left wing and a right wing, wherein the left wing and the right wing are symmetrically arranged. The processus spinosus expanding device is structurally characterized by further comprising a connecting column, a jacking block and an adjusting bolt; a transverse left through hole and a transverse right through hole are formed in the left wing the right wing respectively, the connecting column is arranged in the right through hole, the jacking block is arranged in the left through hole, and the adjusting bolt is arranged in the jacking block and is in threaded connection with the tail of the connecting column; the device further comprises a left pin and a right pin, a left pin hole perpendicular to and communicated with the left through hole is formed in the side face of the left wing, the left pin is arranged in the left pin hole, a right pin hole perpendicular to and communicated with the right through hole is formed in the side face of the right wing, and the right pin is arranged in the right pin hole. The processus spinosus expanding device has the advantages that surgical operation is simple, surgical injuries are small, postoperative vertebrae are high in activity, and the device is good in stability and not prone to displacement or disengagement.

Description

technical field [0001] The invention relates to a medical device, in particular to an interspinous process distraction device for the lumbar spine. Background technique [0002] Lumbar degeneration can lead to very troublesome long-term chronic low back pain that is ineffective in non-surgical treatment. Traditional spinal fusion is the main surgical method for treating low back pain and lumbar instability. Internal fixation of pedicle screws and bone morphogenetic protein (BMP) Application can help to obtain a fusion rate of 90% to 100%, but the patient's symptoms have not been improved to a corresponding degree; moreover, there are potential complications in screw fixation and spinal fusion, such as adjacent segment degeneration, screw breakage, pseudarthrosis, etc. . [0003] Therefore, the concept of surgical management is gradually changing to non-fusion techniques. For early lumbar disc degenerative disease, facet arthritis, and nerve management of foraminal stenosis...

AI Technical Summary

Problems solved by technology

At present, the common design is H-shaped as a whole, consisting of two wings on the left and right sides and a support body between the two wings, but it is an integrated structure, and the distance between the left and right wings is fixed, so it cannot be done according to the individual conditions of the patient during surgery. Further adjustment, easy to shift and fall out after operation

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