Lumbar spondylolisthesis reducer

Abstract

The invention belongs to the technical field of medical devices, and in particular relates to a spondylolisthesis resetter, which includes a handle and a support head, and an included angle is formed between the handle and the support head, and the included angle is 90°-145°. A handle and a second handle, the first handle is hinged to the second handle, the front ends of the first handle and the second handle are respectively provided with a first opening and a second opening, and the first opening includes a connecting rod and a lifting rod, so The rear part of the lifting rod is sheathed in the connecting rod, and the front end of the lifting rod and the front end of the second supporting head are both sheet-shaped, and the outer surfaces of both are provided with triangular teeth. The present invention can not only realize the distraction of the vertebral body, but also realize the lifting of the vertebral body. Unnecessary operations during the operation are greatly reduced, the operation time is saved, and the risk of the operation is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a lumbar spondylolisthesis resetter. Background technique [0002] The existing spondylolisthesis reduction operation relies on the loosening of the joints during the operation, combined with the lifting of the pedicle screws when the rod is mounted, to reset the spondylolisthesis, which has many disadvantages: 1. Some loosening is more difficult Yes, and too many surgical operations will increase intraoperative bleeding, surgical risks, etc.; 2. The effect of resetting the slipped vertebral body by lifting the pedicle screws is often not as expected, which may lead to loosening of the nails or The slipped vertebral body cannot be reset when the release is not complete. [0003] Chinese patent (CN 204033453 U) discloses a lumbar spondylolisthesis intervertebral space distractor resetter. The utility model includes a parallel spread forceps body and two forcep...

AI Technical Summary

Problems solved by technology

[0002] The existing spondylolisthesis reduction operation relies on the loosening of the joints during the operation, combined with the lifting of the pedicle screws when the rod is mounted, to reset the spondylolisthesis, which has many disadvantages: 1. Some loosening is more difficult Yes, and too many surgical operations will increase intraoperative bleeding, surgical risks, etc.; 2. The effect of resetting the slipped vertebral body by lifting the pedicle screws is often not as expected, which may lead to loosening of the nails or The slipped vertebral body cannot be reset when the release is incomplete, etc.

[0003] Chinese patent (CN 204033453 U) discloses a lumbar spondylolisthesis intervertebral space distractor resetter. The utility model includes a parallel spread forceps body and two forceps heads connected with the parallel spread forceps body. The characteristics of the parallel expansion of the forceps head can parallelly expand the adjacent vertebral body in a certain range during the operation; when using this reducer for the reduction and spondylolisthesis of the vertebral body, it must be used in conjunction with the pedicle screw to promote the spondylolisthesis of the vertebral body However, during the operation, the nails are often loosened due to lifting, which is not conducive to the operation

[0004] In summary, the existing devices or methods for spondylolisthesis reduction are difficult, cumbersome and unsatisfactory to operate.

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