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Expandable intervertebral bone graft fusion device and built-in vertebral body anchoring screw type drawer

A cage and anchoring technology, applied in prostheses, spinal implants, medical science, etc., can solve the problem of increasing the volume and achieve the effect of increasing the initial volume

Active Publication Date: 2018-05-18
邹德威
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the contradiction between the volume of the existing fusion device and the diameter of the access channel, the present invention provides an expandable and expandable intervertebral bone graft fusion device and a drawer with built-in vertebral body anchor nails. The volume of the bone graft fusion device can become larger after being stretched, not only through the restricted "bayonet" produced by the anatomical structure of different approaches, but also to create a safe channel for inserting the internal vertebral body anchor nail drawer

Method used

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  • Expandable intervertebral bone graft fusion device and built-in vertebral body anchoring screw type drawer
  • Expandable intervertebral bone graft fusion device and built-in vertebral body anchoring screw type drawer
  • Expandable intervertebral bone graft fusion device and built-in vertebral body anchoring screw type drawer

Examples

Experimental program
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Effect test

Embodiment 1

[0057] An expandable and expandable intervertebral bone graft fusion device, the expandable and expandable intervertebral bone graft fusion device has a cylindrical structure, and the axis of the expandable and expandable intervertebral bone graft fusion device is arranged along the horizontal direction when in use , the expandable and expandable intervertebral bone graft fusion device includes an upper cylinder wall 10 and a lower cylinder wall 20, that is, the expandable and expandable intervertebral bone graft fusion device is surrounded by an upper cylinder wall 10 and a lower cylinder wall 20, The upper cylinder wall 10 and the lower cylinder wall 20 are inserted, and the upper cylinder wall 10 can move equivalent to the lower cylinder wall 20. For example, the upper cylinder wall 10 can move equivalent to the lower cylinder wall 20 and approach or move away from the lower cylinder wall 20, so that the The expandable and expandable intervertebral bone graft fusion device c...

Embodiment 2

[0062] The expandable and expandable intervertebral bone graft fusion device in Example 1 can only achieve one-dimensional expansion of height, in order to make the expandable and expandable intervertebral bone graft fusion device realize two-dimensional expansion of height and width, thereby further Reduce the surgical incision of the expandable and expandable intervertebral bone graft fusion device, mainly for intervertebral disc degeneration, instability, protrusion, intervertebral space loosening, collapse, and narrowing, but it is not necessary to directly decompress the spinal nerve At the same time, through the lateral approach of the body, it reaches the wide side of the spine and directly enters the intervertebral space laterally. Therefore, there is no more restriction on the initial width. It can smoothly enter the narrow space in a relatively flat shape and then expand one-dimensionally to increase the height. It can effectively exert its mechanical function by prop...

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Abstract

The invention provides an expansible expansion interbody fusion cage and a built-in vertebral body anchoring nail type drawer; the expansible expansion interbody fusion cage comprises an upper cylinder wall and a lower cylinder wall plugged in one piece; the upper cylinder wall can move relative to the lower cylinder wall, so the circumferential length of the interbody fusion cage can be increased after the expansible expansion interbody fusion cage is expanded; the upper cylinder wall is provided with a through hole connecting the upper side with the inner side of the expansible expansion interbody fusion cage. The expansible expansion interbody fusion cage can use an initial flat or thin size status to adapt to dissect channels formed by different portion surgery routes and with different widths; the expansible expansion interbody fusion cage enters the inner wide space, and adjusts an expanding clamp connected with the cage so as to be sent in, thus amplifying height in one dimension or height and width in two dimensions, obviously enlarging the initial size, and satisfying size demands capable of effectively performing functions in real application.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a expandable and expandable intervertebral bone graft fusion device, and a drawer with built-in vertebral body anchoring nails. Background technique [0002] The use of intervertebral bone graft fusion for intervertebral bone graft fusion is a symbolic technological progress in the combination of clinical practice of spinal surgery and basic research theories of pathology and biomechanics at the end of the last century and the beginning of this century. "Intervertebral bone graft fusion device", as the axial load (weight) between the vertebral bodies, expands the degenerated and narrowed intervertebral space due to axial stress, expands the upper and lower diameters of the nerve root canal, and decompresses the nerve roots; as an interface Interstitial fixation device, so that the degenerated and unstable spinal lesion segments regain a stable internal environment, so tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44
CPCA61F2/4455A61F2/447A61F2002/30261A61F2002/30265A61F2002/30593
Inventor 邹德威
Owner 邹德威