Self-guide long-arm solid percutaneous pedicle screw

A pedicle screw and self-guided technology, applied in the field of pedicle screw, can solve the problems of insufficient biomechanical strength, complicated manufacturing process and high price, and achieve the advantages of preventing truncation or bending deformation, high mechanical strength and strong support. Effect

Inactive Publication Date: 2014-07-09
THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the percutaneous pedicle screws known in China are all hollow pedicle screws. The manufacturing process is complicated, the price is high, and the bi

Method used

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  • Self-guide long-arm solid percutaneous pedicle screw
  • Self-guide long-arm solid percutaneous pedicle screw
  • Self-guide long-arm solid percutaneous pedicle screw

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Experimental program
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Embodiment Construction

[0024] like Figure 1~2 The shown self-guiding long-arm solid percutaneous pedicle screw includes a screw head 1, a screw body 2, and a screw tail 3 connected sequentially from front to back. The screw head 1 is a solid cone, and the cross-sectional size of the screw head 1 is Gradually increase from front to back; nail body 2 includes a solid cylindrical front section 21 and a solid conical rear section 22, the front end of the cylindrical front section 21 and the rear end of the nail head 1 smoothly transition, the rear end of the cylindrical front section 21 and the The front end of the cone rear section 22 smoothly transitions, and the outer peripheral wall of the cylinder front section 21 is provided with an external thread 211; the nail tail 3 is U-shaped, has two fixed arms 31 and a nail seat 32 connecting the two fixed arms 31; the cone rear section The rear end of 22 links to each other with nail seat 32, and the section of this cone rear section 22 gradually increase...

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Abstract

The invention discloses a self-guide long-arm solid percutaneous pedicle screw which comprises a screw head, a screw body and a screw tail connected in sequence from front to rear. The screw head is a solid cone. The section of the screw head decreases gradually from front to rear. The screw body comprises a solid cylinder front section and solid cone rear section. The front end of the cylinder front section and the rear end of the screw head are in smooth transition. The rear end of the cylinder front section and the front end of the cone rear end are in smooth transition. Outer threads are formed on the outer peripheral wall of the cylinder front section. The screw tail is U-shaped and provided with two fixing arms and a screw seat connecting the two fixing arms. The rear end of the cone rear section is connected with the screw seat. The section of the cone rear section gradually increases from front to rear. The rear-end section of the cone rear section is smaller than the section of the screw seat. The self-guide long-arm solid percutaneous pedicle screw has the advantages accurate percutaneous pedicle screw fixation is achieved, operative wound is reduced, and high mechanical strength of the pedicle screw is guaranteed.

Description

[0001] technical field [0002] The invention relates to a pedicle screw technology for minimally invasive use in the spine, in particular to a self-guiding long-arm solid percutaneous pedicle screw. Background technique [0003] At present, the percutaneous pedicle screws known in China are all hollow pedicle screws. The manufacturing process is complicated, the price is high, and the biomechanical strength is insufficient. They are often cut off or deformed by external forces, and they need to be reamed and implanted under the guidance of a guide pin. . Contents of the invention [0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide self-guiding long-arm solid percutaneous pedicle screws, which can realize accurate placement and fixation of the percutaneous pedicle screws and reduce surgical trauma while ensuring the stability of the pedicles. Nails have high mechanical strength. [0005] The purpose of the p...

Claims

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Application Information

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IPC IPC(8): A61B17/86A61B17/70
CPCA61B17/7032A61B17/90
Inventor 何二兴尹知训
Owner THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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