Cervical vertebra drag hook

Abstract

The invention relates to a cervical vertebra drag hook which comprises a left clamp arm, a right clamp arm, a moveable arm and a drag hook, wherein the left clamp arm is hinged with the right clamp arm through a pivot; the moveable arm is respectively hinged with the front ends of the left clamp arm and the right clamp arm; a rotating direction of the moveable arm is vertical to the rotating directions of the left clamp arm and the right clamp arm; a notch with an upward opening is formed between a first baffle sheet and a second baffle sheet; the second baffle sheet is located at the front end of the first baffle sheet; the drag hook is located under the moveable arm; the notch is located on the outer side of the moveable arm; at least two inward toothed bulges are arranged at the bottom of the first baffle sheet and the second baffle sheet. A free end of the drag hook in the cervical vertebra drag hook extends toward the front end and the limitation to the surgery operation space is reduced; the intervertebral disc surgery operation can be performed through the notch on the drag hook; in a use process, the inward toothed bulges at the bottom of the baffle sheets are blocked at the lateral border of the centrum, so that the stability of the drag hook is increased; the toothed bulges are arranged inward, so that the pulling distance of the two drag hooks on the left and right sides can be increased and the operation space is further exposed.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a cervical retractor. Background technique [0002] In orthopedic cervical spine surgery, cervical retractors are usually used to expose the surgical area for stretching tissue, so as to facilitate surgery. Patent document CN 201782785 U discloses an adjustable multifunctional spinal retractor. Although it can pull the surrounding tissue, the forceps handle above the retractor will block the surgical field of view during the operation, limit the operation space, increase the difficulty of operation, and reduce the risk of surgery. efficiency. Contents of the invention [0003] The present invention aims to provide a retractor for the cervical spine, one end of the retractor is connected to the front end of the clamp arm, and the free end of the retractor extends toward the front end, so as to avoid the restriction of the operation space by the clamp arm, and at the...

AI Technical Summary

Problems solved by technology

Patent document CN 201782785 U discloses an adjustable multifunctional spinal retractor. Although it can pull the surrounding tissue, the forceps handle above the retractor will block the surgical field of view during the operation, limit the operation space, increase the difficulty of operation, and reduce the risk of surgery. efficiency

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