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Vertebral arch root minimally invasive surgery apparatus

A minimally invasive surgery and pedicle technology, applied in the field of surgical instruments, can solve the problems of restoring the height of the injured vertebra, correcting the kyphosis deformity that is not open enough, reducing bending or fatigue strength, and limited orthopedic force, so as to reduce surgical trauma, Improves strength and reduces complications

Pending Publication Date: 2019-11-12
牛国旗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used percutaneous minimally invasive pedicle screws are different from those used in traditional open surgery. They are generally hollow screws, and the hollow design of the screw may greatly reduce its bending or fatigue strength, resulting in insufficient fixation strength and limited orthopedic force. Disadvantages, the ability to restore the height of the injured vertebra and correct the kyphosis deformity during the operation is not as good as the solid screw of the open operation, especially when the pedicle of the upper thoracic spine is thin, which limits its use

Method used

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  • Vertebral arch root minimally invasive surgery apparatus
  • Vertebral arch root minimally invasive surgery apparatus
  • Vertebral arch root minimally invasive surgery apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-3 and Figure 6 As described in , a minimally invasive pedicle surgical instrument, which includes a pedicle screw and a corresponding insertion guide device, the insertion guide device includes a guide post 1, at the lower end of the guide post 1 A conical narrowing portion 1b distributed coaxially is provided, and a central through hole 1a is provided on the guide post 1 and the narrowing portion 1b along the axis. The guide post 1 and the narrowed portion 1b are of an integral structure.

[0027] A first sleeve 2 is inserted and sleeved on the outer side of the guide post 1 , and a conical first narrowing portion 2 a coaxially distributed is provided at the lower end of the first sleeve 2 . The inner cylinder wall of the first sleeve 2 is distributed coaxially with the first sleeve 2 and penetrates the first sleeve 2 and the first narrowed portion 2a in the axial direction. The horizontal section of the inner cylinder wall of the first sleeve 2 i...

Embodiment 2

[0041] Such as figure 1 , 2 , 4, 5 and 7, a pedicle minimally invasive surgical instrument, which includes a pedicle screw and a guide for insertion corresponding to it, the guide for insertion includes a guide post 1, and the guide The lower end of the post 1 is provided with a conical narrowing portion 1b distributed coaxially, and a central through hole 1a is provided on the guide post 1 and the narrowing portion 1b along the axis. The guide post 1 and the narrowed portion 1b are of an integral structure.

[0042]A first sleeve 2 is inserted and sleeved on the outer side of the guide post 1 , and a conical first narrowing portion 2 a coaxially distributed is provided at the lower end of the first sleeve 2 . The inner cylinder wall of the first sleeve 2 is distributed coaxially with the first sleeve 2 and penetrates the first sleeve 2 and the first narrowed portion 2a in the axial direction. The horizontal section of the inner cylinder wall of the first sleeve 2 is circul...

Embodiment 3

[0058] Such as figure 1 , 2 , 8, 9, and 10 show a minimally invasive pedicle surgical instrument, which includes a pedicle screw and a corresponding insertion guide that cooperates with it. The insertion guide includes a guide post 1, and the guide post 1 The lower end of the guide post is provided with a conical narrowing portion 1b coaxially distributed, and a central through hole 1a is provided on the guide post 1 and the narrowing portion 1b along the axis. The guide post 1 and the narrowed portion 1b are of an integral structure.

[0059] A first sleeve 2 is inserted and sleeved on the outer side of the guide post 1 , and a conical first narrowing portion 2 a coaxially distributed is provided at the lower end of the first sleeve 2 . The inner cylinder wall of the first sleeve 2 is distributed coaxially with the first sleeve 2 and penetrates the first sleeve 2 and the first narrowed portion 2a in the axial direction. The horizontal section of the inner cylinder wall of ...

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Abstract

The invention provides a vertebral arch root minimally invasive surgery apparatus. The vertebral arch root minimally invasive surgery apparatus is characterized by comprising a vertebral arch root screw and a placing and guiding device which is matched with the vertebral arch root screw in a corresponding manner. The vertebral arch root minimally invasive surgery apparatus disclosed by the invention is simple in structure and convenient to use; and a placing channel for the solid vertebral arch root screw can be quickly and accurately formed, so that the solid vertebral arch root screw can beapplied to a minimally invasive surgery, and the defect that in the conventional minimally invasive surgery, only a hollow vertebral arch root screw can be adopted is overcome.

Description

Technical field: [0001] The invention relates to the field of surgical instruments, in particular to a pedicle minimally invasive surgical instrument. Background technique: [0002] With the development of society, the number of thoracic and lumbar internal fixation in spinal surgery is increasing year by year, and the demand for spinal pedicle screw fixation is also increasing. It is now widely used in the treatment of spinal degenerative diseases, spinal deformities, and fractures. , tumors, infections, etc. In order to pursue the precision and minimal invasiveness of spinal surgery, percutaneous minimally invasive pedicle screws are gradually being used clinically. The currently used percutaneous minimally invasive pedicle screws are different from those used in traditional open surgery. They are generally hollow screws, and the hollow design of the screw may greatly reduce its bending or fatigue strength, resulting in insufficient fixation strength and limited orthopedi...

Claims

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Application Information

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IPC IPC(8): A61B17/68A61B17/70A61B17/86A61B17/90
CPCA61B17/683A61B17/70A61B17/7076A61B17/86A61B17/8605A61B17/88A61B17/7032A61B17/90
Inventor 牛国旗周乾坤杨德富周功陈扬聂丰聂虎刘涛丁祥蒋维利
Owner 牛国旗