pedicle screw wrench

A pedicle screw and wrench technology, which is applied in the field of medical devices, can solve the problems of complicated operation and inability to control the fit of the guide pin pedicle screw well, and achieve the effect of saving time for nailing

Active Publication Date: 2021-05-25
HEBEI RUIHE MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pedicle screw screw wrench, which aims to solve the complicated operation of the pedicle screw implantation method in the prior art, which cannot well control the cooperation of the guide pin and the pedicle screw.

Method used

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Embodiment Construction

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] Please also refer to figure 1 and image 3 , now the pedicle screw nailing wrench provided by the present invention will be described. Pedicle screw nail wrench, including nail assembly 1, the first sleeve 2 and locking piece 4, the head end of nail assembly 1 (the end inserted into the cortex) cooperates with pedicle screw 5, for use with The pedicle screw 5 is docked, and the pedicle screw 5 is sent from the body to the pedicle 8 through the cortex opening, and can drive the pedicle screw 5 to rotate around the axis. The interior of the nail assembly 1 ...

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Abstract

The invention provides a pedicle screw screw wrench, belonging to the technical field of medical devices, comprising a nail assembly, a first sleeve and a locking member; the head end of the nail assembly is used to cooperate with the pedicle screw, Drive the pedicle screw; the inside is provided with a first through hole for the guide needle to pass through; the head end of the first sleeve is connected with the tail end of the nail assembly through the first thread structure, and the tail end is movable to be used for aligning the guide needle shaft. The position-limiting part is limited; the locking part is movably arranged on the nailing assembly, and is used for locking the nailing assembly and the first sleeve. The pedicle screw nailing wrench provided by the present invention implants the guide pin and the pedicle screw into the pedicle at the same time, which saves the nailing time, and during the nailing process, the guide pin and the pedicle screw can be well cooperation.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and more specifically relates to a pedicle screw nailing wrench. Background technique [0002] For vertebral instability after spinal trauma, spondylolisthesis, degenerative diseases and other single-segment or multi-segment fractures, spinal internal fixators are often used. There are many types of fixators on the market, but most of them are composed of unidirectional pedicle screws, universal pedicle screws, connecting rods and other corresponding components. [0003] Most of the pedicle screws are hollow screws, which need to cooperate with the guide pin during implantation. In the prior art, during the implantation process of the pedicle screw, the guide pin is first implanted through the cortex, and the guide pin is left in the pedicle. Then use a tool to insert the pedicle screw into the guide wire, and implant it into the pedicle along the guide wire. After the pedicle screw ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/88
CPCA61B17/8875
Inventor 李严
Owner HEBEI RUIHE MEDICAL DEVICES CO LTD
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