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A kind of intervertebral movement preserving device and its guided implantation instrument and implantation method

A retaining device and guided technology, applied in the medical field, achieves the effect of simple installation, easy installation and operation, and prolonging operation time

Active Publication Date: 2021-07-09
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims to solve the disadvantages of traditional intervertebral motion preservation device implantation instruments and implantation methods that need to constantly try to align or need additional devices to assist in aligning the intervertebral motion preservation device during the clamping process of the intervertebral motion preservation device

Method used

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  • A kind of intervertebral movement preserving device and its guided implantation instrument and implantation method
  • A kind of intervertebral movement preserving device and its guided implantation instrument and implantation method
  • A kind of intervertebral movement preserving device and its guided implantation instrument and implantation method

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0047] see figure 1 , 4 , 8, the intervertebral motion preservation device I is composed of an upper bone plate 1, a lining 2, a nucleus pulposus 3 and a lower bone bone plate 4, the inner lining 2 is nested in the upper bone plate 1, and the nucleus pulposus 3 is nested In the lower bone plate 4, the lining 2 and the nucleus pulposus 3 form a spherical friction pair of clearance fit type; Composition, the elastic telescopic ring 8 is fixed in the front end of the knob 7, the tapered connector 65 at the tail of the grip rod 6 is fixed in the rotating cavity 71 at the end of the knob 7 through the elastic telescopic ring 8, and the two can be freely Rotate, the clamping rod 5 passes through the inner cavity of the gripping rod 6 and is screwed together with the inside of the knob 7, and when the knob 7 rotates relative to the gripping rod 6, the clamping rod 5 is...

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Abstract

The invention relates to the field of medical technology, in particular to an intervertebral motion preservation device and its guided implantation instrument and implantation method. The intervertebral motion preservation device consists of an upper bone plate, an inner lining, a nucleus pulposus and a lower bone plate. The lining is nested in the upper bone plate, and the nucleus pulposus is nested in the lower bone plate. The inner lining and the nucleus pulposus form a spherical friction pair with clearance fit. The embedded clamping groove is composed of an open area and a concave clamping area. The open area and the clamping area are connected together. There is a gap between the clamping groove and the upper bone plate and the lower surface There is a certain thickness, and the same embedded clamping groove is symmetrically provided at the corresponding position of the lower bone plate. The clamping process is in place in one step, fast and simple, and can avoid centering and direction correction during the product clamping process, which can effectively reduce the difficulty of the operation and reduce the operation time.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an intervertebral motion preservation device, a guided implantation instrument and an implantation method thereof. Background technique [0002] Intervertebral motion preservation devices currently have Bryan, Prestige product series, ProDisc C, Mobi-C, PCM, SRCURE-C and other products that have been approved by the FDA and are widely used around the world. implanted device products, but there is still room for improvement in some special implanted device products. At present, there is no intervertebral motion-preserving device approved by CFDA in China. Most of the domestic intervertebral motion-preserving devices are in the patent stage, and few of these patented products have targeted design of special implantation devices. [0003] For some common special implantation devices for intervertebral motion preservation devices, the clamping head part of the front end is usually ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44A61F2/46
CPCA61F2/30767A61F2/44A61F2/4611A61F2002/30518A61F2002/4615A61F2002/4625A61F2002/4631
Inventor 刘伟强祝佳廖振华卢俊哲徐林俞兴穆晓红
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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