Lumbar spondylolisthesis reduction apparatus

Abstract

The invention belongs to the technical field of medical instruments and particularly relates to a lumbar spondylolisthesis reduction apparatus. The lumbar spondylolisthesis reduction apparatus comprises handles and distracting heads, and an included angle of 90-145 degrees is formed between the handles and the distracting heads. The handles include a first handle and a second handle, the first handle is hinged to the second handle, and a first distracting head and a second distracting head are arranged at front ends of the first handle and the second handle respectively. The first distractinghead comprises a connection rod and a lifting rod, the rear portion of the lifting rod sleeves the connection rod internally, the front end of the lifting rod and the front end of the second distracting head are both flaky, and outer lateral sides of the lifting rod and the second distracting head are provided with triangular teeth. By the lumbar spondylolisthesis reduction apparatus, both lumbardistracting and lifting can be realized, unnecessary operation in surgeries are reduced to a great extent, and accordingly surgical time is saved, and surgical risks are reduced sharply.

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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