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Vertebral pedicle screw and thoracolumbar spine anterior internal fixing system

A pedicle screw and fixation system technology, applied to internal fixators, fixators, internal bone synthesis, etc., can solve problems such as difficulty in controlling the force of beating spacers, inability to knock in, and damage to the spinal cord, so as to save operation time , increase firmness, reduce damage

Active Publication Date: 2014-06-18
SUZHOU MINIMALLY INVASIVE SPINAL TRAUMA MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to master the strength of knocking on the gasket. If it is light, it will not go in, and if it is heavy, it will damage the spinal cord.

Method used

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  • Vertebral pedicle screw and thoracolumbar spine anterior internal fixing system
  • Vertebral pedicle screw and thoracolumbar spine anterior internal fixing system
  • Vertebral pedicle screw and thoracolumbar spine anterior internal fixing system

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Embodiment Construction

[0034] Embodiments of the present invention are described below with reference to the drawings.

[0035] figure 1 An embodiment of the anterior thoracolumbar internal fixation system of the present invention is shown. In this example, the anterior thoracolumbar internal fixation system is an anterior thoracolumbar interbody fusion internal fixation system. The system includes four pedicle screws, two connecting rods 3 and a cross-connector 4 installed between the connecting rods 3, each pedicle screw connects with the external thread of the corresponding bolt 2 through the internal thread of its head 1. The thread fits and is respectively fixed on two connecting rods 3, and each connecting rod 3 is fixed with two pedicle screws.

[0036] figure 2 A pedicle screw of an embodiment of the invention is shown. Such as figure 2 As shown, the pedicle screw of the embodiment of the present invention is composed of two parts, namely the washer 5 and the pedicle screw. Such as ...

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Abstract

The invention provides a vertebral pedicle screw and a thoracolumbar spine anterior internal fixing system. The vertebral pedicle screw comprises a head portion with internal threads, a screw rod with external threads, and a gasket. One end of the screw rod, which is connected with the head portion, is provided with a circumferential groove, the gasket is snapped inside the circumferential groove and can rotate relative to the screw rod around the longitudinal axis of the screw rod, and the upper surface of the gasket abuts against the bottom surface of the head portion. When the vertebral pedicle screw is screwed in, the gasket is pressed into a centrum, so that the surgical operation difficulty can be reduced, injury to the patient can be reduced, surgical time can be saved, and the combination firmness between an implant and the centrum can be enhanced. The invention also relates to a thoracolumbar spine anterior internal fixing system. The thoracolumbar spine anterior internal fixing system comprises a plug screw, a connecting bar and the vertebral pedicle screw.

Description

technical field [0001] The invention relates to the field of orthopedic implants, in particular to spinal surgery, such as the field of implants for treating or repairing patients' spinal diseases, in particular to pedicle screws and anterior thoracolumbar internal fixation systems. Background technique [0002] Spine surgery has been performed for decades to treat or repair spinal disorders in patients. At present, it is clinically used for spinal internal fixation orthopedics, when thoracolumbar fractures, thoracolumbar spinal tumors, and other deformities require anterior spinal surgery and internal fixation, doctors usually choose anterior or posterior surgical approaches according to the patient's condition Methods. When the anterior and middle columns of the spine are unstable, vertebral body lesions, tuberculosis, and tumors, the use of anterior internal fixation can significantly increase the stability of the spine in all directions, eliminate lesions, and reshape t...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/86A61B17/70A61B17/7049A61B17/7044A61B17/8695A61B17/7001A61B17/7032A61B2017/8655
Inventor 高耀平田芳林忠陈伟
Owner SUZHOU MINIMALLY INVASIVE SPINAL TRAUMA MEDICAL TECH CO LTD
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