Concussion saw device for minimally invasive cutoff of vertebral pedicle

Abstract

The invention discloses a concussion saw device for minimally invasive cutoff of the vertebral pedicle. The concussion saw device comprises an outer guide pillar and a concussion saw, wherein an axial positioning through hole is arranged in the center of the outer guide pillar; a radial sliding groove is arranged inside the lower side of the outer guide pillar; a groove opening at one end of the sliding groove is positioned on the outer side wall of the outer guide pillar to form an outlet; the concussion saw is arranged in the sliding groove; a control hole and a concussion hole which are parallel to the positioning through hole are also arranged in the outer guide pillar; the control hole is communicated with the sliding groove; a control rod is arranged in the control hole; the bottom end of the control rod is provided with a driving component matched with the concussion saw so that the concussion saw extends or shrinks along the length direction; the concussion rod is arranged in the concussion hole; the bottom end of the concussion rod is fixedly provided with connecting members; and the connecting members are covered at both sides of the concussion saw so that the concussion saw is clamped between the connecting members. The concussion saw device can be used for cutting off the vertebral pedicle so that the vertebral body and the vertebral pedicle are separated and prolonged so as to smoothly carryout a lumbar spinal stenosis operation.

Description

technical field [0001] The invention belongs to the field of lumbar spinal canal stenosis surgery, and in particular relates to an oscillating saw device for minimally invasively cutting off pedicles. Background technique [0002] With the aggravation of population aging and the bad working and living habits of modern people, the incidence of lumbar spinal stenosis is increasing. Lumbar spinal stenosis refers to a series of clinical symptoms caused by bone hyperplasia or fibrous tissue hyperplasia and hypertrophy resulting in narrowing of the spinal canal or nerve root canal, stimulation and compression of nerve roots or spinal cord caused by various reasons. Lumbar spinal stenosis can be uniplane (two adjacent vertebral bodies, intervertebral discs, facet joints, and supporting ligaments) or multiplane (involving two or more spaces). Its typical clinical manifestations are: intermittent claudication, intermittent thigh or calf radiating pain, symptoms aggravated when stand...

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, when the pedicle screw internal fixation device is used, there are often complications such as internal fixation failure and adjacent segment degeneration. At the same time, the operation is traumatic, expensive, and brings great pain to the patient.

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