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Lumbar intervertebral disc prosthesis, implanting instrument, device composed of waist prosthesis and implanting instrument and method for inserting lumbar vertebra implantation material

A lumbar intervertebral disc and prosthesis technology, which is applied to a device composed of a lumbar prosthesis and an implanted device, inserted into the field of lumbar implants, lumbar intervertebral disc prosthesis, and implanted devices, can solve the damage of normal vertebral bodies, and has a rough and simple design. , can not achieve minimally invasive surgery to alleviate the pain of patients and other problems, to achieve the effect of simplifying the complexity and improving the success rate of replacement

Inactive Publication Date: 2015-11-11
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) this kind of anchoring design will cause damage to the normal vertebral body; (2) the rough and simple design cannot restore and maintain the normal motion function of the normal lumbar intervertebral disc; (3) this kind of design cannot meet the requirements of simplifying the operation process of doctors , unable to achieve the effect of minimally invasive surgery to relieve the patient's pain

Method used

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  • Lumbar intervertebral disc prosthesis, implanting instrument, device composed of waist prosthesis and implanting instrument and method for inserting lumbar vertebra implantation material
  • Lumbar intervertebral disc prosthesis, implanting instrument, device composed of waist prosthesis and implanting instrument and method for inserting lumbar vertebra implantation material
  • Lumbar intervertebral disc prosthesis, implanting instrument, device composed of waist prosthesis and implanting instrument and method for inserting lumbar vertebra implantation material

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0043] see Figure 4 As shown, the lumbar intervertebral disc prosthesis 1 includes an upper endplate 11, a nucleus pulposus 12 and a lower endplate 13, and the upper endplate 11 and the nucleus pulposus 12 form a ball-and-socket structure motion pair; the nucleus pulposus 12 and the lower endplate The fitting groove 131 of the end plate 13 constitutes a moving pair.

[0044] see Figure 4 As shown, the ball-and-socket kinematic pair is formed by the convex dome 121 on the top of the nucleus pulposus 12 fitting into the dome groove 111 on the inner plane of the upper endplate, so that the upper endplate 11 can move relative to the nucleus pulposus 12 Rotation and side bending movements occur; the moving pair is formed by fitting the ear-shaped member (not shown) on the top of the nucleus pulposus 12 into the inner plane groove 131 of the lower endplate; when the l...

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Abstract

The invention relates to a lumbar intervertebral disc prosthesis, an implanting instrument, a device composed of a waist prosthesis and the implanting instrument and a method for inserting a lumbar vertebra implantation material. The device comprises the waist prosthesis and the implanting instrument, a nucleus pulposus is arranged between an upper end plate and a lower end plate of the waist prosthesis in a sandwiched mode, the upper end plate and the nucleus pulposus form a kinematic pair of a ball socket structure, and the nucleus pulposus and a guide groove structure of the lower end plate form a moving pair; an elastic clamping head in a sleeve of the implanting instrument is connected with one end of a connecting rod through threads, and a nut located at the tail end of the sleeve and in threaded connection with the other end of the connecting rod rotates to force the connecting rod and the sleeve to move relatively and drive the sleeve to extrude the elastic clamping head to be opened or closed so as to clamp or release the prosthesis.

Description

technical field [0001] The invention relates to the field of orthopedic implants, in particular to a lumbar intervertebral disc prosthesis, an implant device, a device composed of the lumbar prosthesis and the implant device, and a method for inserting the lumbar implant. Background technique [0002] The number of people with intervertebral disc lesions is increasing day by day, because the intervertebral disc is an important structure of the human spine to support the entire body and transmit loads. Therefore, for some people with serious lesions, only intervertebral disc replacement can restore or maintain basically normal physiological activities so as to improve the quality of life. The replaced artificial intervertebral disc can realize rotation, lateral bending and micro-translational movement, so as to achieve a good recovery of the compound six-degree-of-freedom spatial range of motion and maintain the normal movement function of the intervertebral disc. [0003] C...

Claims

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Application Information

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IPC IPC(8): A61F2/44A61F2/46
Inventor 柯昌保卢俊哲廖振华刘伟强
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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