Semi-automatic control type surgical retractor for lumbar vertebral fracture surgery

Abstract

The invention discloses a semi-automatic control type surgical retractor for lumbar vertebral fracture surgery. The semi-automatic control type surgical retractor comprises a base and a vertical rod fixed to the base, wherein a mounting frame is rotatably mounted on the vertical rod and connected with an angle adjusting mechanism mounted on the vertical rod, a sliding rod is arranged on the mounting frame in a penetrating mode, the sliding rod is connected with an air cylinder mounted on the mounting frame, and a retractor mechanism is mounted on the sliding rod; the retractor mechanism comprises a mounting plate fixedly connected with the sliding rod, a bearing plate is fixed to one end of the mounting plate, two gears are rotationally mounted on the bearing plate, a double-side rack plate is meshed between the two gears, extension pieces are fixed to the two sides, perpendicular to the mounting plate, of the bearing plate respectively, two parallel connecting rods are hinged to the extension pieces, an L-shaped frame is hinged to the ends, away from the extension pieces, of the connecting rods, and a retractor assembly is mounted on the L-shaped frame.

Description

technical field [0001] The invention relates to the related technical field of medical equipment, in particular to a semi-automatically controlled surgical retractor used for lumbar fracture surgery. Background technique [0002] There are 5 lumbar vertebrae, the vertebral body is tall, the front is high and the back is low, and it is kidney-shaped. The vertebral foramen is large and triangular in shape, larger than the thoracic spine and smaller than the cervical spine. The articular process is in the sagittal position, the articular surface of the superior articular process is concave, posteromedial, and the articular surface of the inferior articular process is convex, anterior lateral. There is a mastoid on the outside of the upper joint, and the spinous process is a square bone plate, which protrudes backward horizontally. [0003] At present, when lumbar therapists operate on patients, because the site is relatively deep, it is difficult to fully expose the surgical ...

AI Technical Summary

Problems solved by technology

[0003] At present, when lumbar therapists operate on patients, because the site is relatively deep, it is difficult to fully expose the surgical field of view. Clinically, most of the surgical retractors are used to pull the surgical wound. Most of the existing surgical retractors for surgical wound retraction have pull arms and hooks. Assembled with a body, and the effect of pulling the wound is not ideal, and the existing hook structure requires medical staff to maintain the pulling state when in use. Keeping a state for a long time cannot avoid the change of the pulling force and affect the pulling effect

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