Intervertebral motion retaining device and preassembled implanting instrument and implanting method thereof

Abstract

The invention relates to the technical field of medicine, in particular to an intervertebral motion retaining device and a preassembled implanting instrument and implanting method thereof; the intervertebral motion retaining device comprises an intervertebral motion retaining device body and the preassembled implanting instrument corresponding to the intervertebral motion retaining device body, wherein the intervertebral motion retaining device body is composed of an upper bone fracture plate, a lining, a nucleus pulposus and a lower bone fracture plate; the lining is nested in the upper bonefracture 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; the preassembled implantinginstrument is composed of a clamping head, a retainer, a holding rod, an opening rod and a knob; the clamping head and the retainer form a preassembled clamping component, and the preassembled clamping component and the intervertebral motion retaining device body are preassembled together for aseptic packaging; the holding rod, the opening rod and the knob form a clamping instrument external transmission component; the clamping instrument external transmission component is connected with the preassembled clamping component packaged together with the intervertebral motion retaining device body;and during an operation, the clamping instrument external transmission component is combined with the preassembled clamping intervertebral motion retaining device body packaged aseptically, so that clamping and implantation can be completed.

Description

[0001] This application is a divisional application of the following application, application date: July 27, 2018, application number: 201810843948.1 Invention name: an intervertebral motion retention device and its pre-installed 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 preassembled 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...

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Problems solved by technology

The present invention aims to solve the following problems in the traditional intervertebral motion preservation device implantation instrument and implantation method: ① the implantation process of the traditional intervertebral motion preservation device is complicated, the operation is difficult, and the operation time is relatively long; ② the traditional The upper and lower bone plates of the intervertebral motion-preserving device have a clamping groove structure corresponding to the implanted instrument, which usually has a large resection of the upper and lower bone plates, resulting in obvious stress concentration on the upper and lower bone plates, and the bearing capacity of the intervertebral motion-preserving device is reduced. The problem

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