Laminectomy retractor with function of opening surgical operation space

Abstract

The invention discloses a laminectomy retractor with a function of opening the surgical operation space. The laminectomy retractor comprises a reverse-toothed pry arm, a first connecting plate, a second connecting plate and a hand-held retraction plate, wherein the reverse-toothed pry arm and the second connecting plate are inclined toward the front lower side; the rear upper end of the reverse-toothed pry arm is connected with the front end of the first connecting plate, and the rear end of the first connecting plate is connected with the front lower end of the second connecting plate; the rear upper end of the second connecting plate is fixedly connected with the front end of the hand-held retraction plate; the reverse-toothed pry arm is formed into a tile-shaped structure, the front endface of the reverse-toothed pry arm is depressed backward to form an arc surface. The laminectomy retractor has the beneficial effects that the design of arc depression of the reverse-toothed pry armand two-reverse-toothed hooks at the tail end of the reverse-toothed pry arm can be used for dispersing the stress formed by muscle tension, when the reverse-toothed pry arm is put on the lateral side of the laminectomy, a window is formed in the first connecting plate, a probe is exposed to locate a transverse process, the upper side of the first connecting plate and the front side of the secondconnecting plate can form a large surgical field and space, so that the surgical operation space on the front outer side of the reverse-toothed pry arm can further extends toward the rear upper side,the clinical pedicle screw fixtion speed and accuracy and the intertransverse fusion efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a lamina retractor for widening the operating space. Background technique [0002] The lamina retractor, as the name suggests, is a retractor member used in spinal surgery to retract the soft tissue of the posterolateral muscle group of the lamina and expose the lamina for decompression, fixation and fusion. Clinically, the classic posterior decompression and fusion surgery in spinal surgery often requires strong and effective retraction of the posterolateral paravertebral muscles to expose the lamina, facet joints, and even the transverse process, so as to facilitate the placement of pedicle screws and / or transverse processes. Interprocess bone graft. [0003] The laminar barb retractor is the best instrument for retracting the paravertebral muscles and exposing the pedicle screw placement point at the superior articular process. The traditional laminar retractor 100...

AI Technical Summary

Problems solved by technology

It is often limited by the tension of the posterolateral muscle group of the spine, and the exposed surgical field of view and operating space are limited, which makes it difficult to place the pedicle screw in the direction of inversion in clinical practice. The nail method and the surgical method of bone graft fusion between the posterolateral transverse processes also have difficulties due to the problems of visual field and operating space

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