A minimally invasive lumbosacral unidirectional barbed axial fusion internal fixation system

An axial fusion and fixation system technology, applied in the direction of spinal implants, etc., can solve the problems of cumbersome operation steps and many wounds on the body surface, and achieve the effect of reducing the number of wounds, reducing bleeding, and shortening operation time

Inactive Publication Date: 2018-10-09
THE FIRST AFFILIATED HOSPITAL HENGYANG MEDICAL SCHOOL UNIV OF SOUTH CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the existing lumbosacral vertebral locking axial fusion internal fixation system has many wounds on the body surface and cumbersome operation steps when it is applied to surgery

Method used

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  • A minimally invasive lumbosacral unidirectional barbed axial fusion internal fixation system
  • A minimally invasive lumbosacral unidirectional barbed axial fusion internal fixation system
  • A minimally invasive lumbosacral unidirectional barbed axial fusion internal fixation system

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Experimental program
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Embodiment 1

[0046] Such as Figure 1-18 As shown, a minimally invasive lumbosacral spine unidirectional barbed axial fusion and internal fixation system includes an implant rod 1, an internal fixator 2, a stab push mechanism 3, a front stab mechanism 4, a back stab mechanism 5, and a plug Head push rod 6, front plug 7, rear plug 8 and locking pin 9.

[0047] The implant rod 1 has a tubular shape with a penetrating inner hole 11, and the inner hole 11 is provided with a locking pin groove A112 along the axial direction and passing through the entire length of the inner hole 11, and the front end of the inner hole 11 is a screw hole section C111 . A positioning block 12 is also fixedly connected to the implant rod 1, and the positioning block 12 is provided with a positioning hole 121 and a locking pin groove C122 into which the bent section 91 of the locking pin 9 falls.

[0048] The internal fixator 2 is a stepped cylindrical body, one end of which is provided with a screw section C21 that i...

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PUM

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Abstract

An internal fixing system for minimally invasive lumbosacral vertebrae one-way axial fusion with a spine comprises an implantation rod, an internal fixator, spine sheet pushing mechanisms, a front spine sheet mechanism, a rear spine sheet mechanism, a plug pushing rod, a front plug and a rear plug. After the internal fixator is mounted between a vertebral body of a waist 5 and a sacrum 1 of a patient, the front plug, a front spine sheet, a rear spine sheet and the rear plug are sequentially mounted. A blade of the front spine sheet and a blade of the rear spine sheet are drilled out from an axial kidney-shaped hole A and an axial kidney-shaped hole B in the internal fixator and the two blades are inserted in two vertebrae of the patient respectively. Relative rotation between the two vertebrae can be effectively prevented, the number of wounds needing to be opened in the body surface of the patient during an operation is decreased, and the amount of bleeding during the operation is reduced. Compared with existing lumbosacral vertebrae axial fusion with a lock, the internal fixing operation difficulty and operating difficulty are lowered, and operation time can be shortened.

Description

Technical field [0001] The invention relates to an orthopedic surgical instrument, in particular to a minimally invasive unidirectional puncture axial fusion internal fixation system for the lumbosacral vertebra. Background technique [0002] Lumbosacral fusion is a common surgical method for clinical treatment of lumbosacral degeneration and instability. At present, the conventional anterior surgery is easy to damage the internal organs, blood vessels and nerves, and the posterior surgery interferes greatly with the physiological function of the spine, which does not conform to the biomechanical structure of the spine. In the past ten years, with the development of minimally invasive concepts and science and technology, new lumbar spine anterior minimally invasive surgery represented by laparoscopic anterior puncture, minimally invasive small incisions, and percutaneous internal fixation and fusion have made great progress. . [0003] The invention patent with publication number...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44
Inventor 宋西正
Owner THE FIRST AFFILIATED HOSPITAL HENGYANG MEDICAL SCHOOL UNIV OF SOUTH CHINA
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