Intervertebral motion retention device and guiding type implanting device and implanting method thereof
A technology for retaining devices and movement, applied in the medical field, to achieve the effect of increasing the difficulty of surgery, avoiding large surgical windows, and simplifying the surgical process
Inactive Publication Date: 2020-07-31
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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- Description
- Claims
- Application Information
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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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[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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The invention relates to the technical field of medicine, in particular to an intervertebral motion retention device and a guiding type implanting device and an implanting method thereof. The intervertebral motion retention device is composed of an upper bone fracture plate, a lining, nucleus pulposus and a lower bone fracture plate, wherein the lining is nested in the upper bone fracture plate, the nucleus pulposus is nested in the lower bone fracture plate, and the lining and the nucleus pulposus form a clearance fit type spherical friction pair; embedded clamping grooves are formed in a left side and a right side of a rear end of the upper bone fracture plate of the intervertebral motion retention device and composed of opening areas and inwards-concave clamping areas, the opening areasare communicated with the clamping areas, and certain thicknesses are reserved between the clamping grooves and the upper surface and the lower surface of the upper bone fracture plate; and the sameembedded clamping grooves are symmetrically formed in corresponding positions of the lower bone fracture plate. The clamping process is completed in one step, rapidness and simplicity are achieved, centering and direction correction in the product clamping process can be avoided, the operation difficulty can be effectively reduced, and the operation time is shortened.
Description
[0001] This application is a divisional application of the following application, application date: July 27, 2018, application number: 201810843992.2, invention name: an intervertebral motion retention device and its guided implantation device and implantation method. technical field [0002] 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 [0003] Several products such as Bryan, Prestige product series, ProDiscC, Mobi-C, PCM, and SRCURE-C have been approved by the FDA for intervertebral motion preservation devices, and are widely used around the world. Device products, but there is still room for improvement in some special implant 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 pate...
Claims
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IPC IPC(8): A61F2/44A61F2/46A61F2/30
CPCA61F2/30767A61F2/44A61F2/4611A61F2002/30518A61F2002/4631A61F2002/4625A61F2002/4615
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