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Improved human cervical veterbra saddle joint

A technology of joints and cervical spine, which is applied in the field of saddle joints of human cervical spine, can solve the problems of affecting positioning and fixing, insufficient tightness, and affecting the speed of patients' recovery of physiological functions, etc.

Inactive Publication Date: 2005-03-02
沈强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the base of the joint is tooth-shaped, and the tightness of the joint with the upper and lower cervical vertebrae is still insufficient, which affects the positioning and fixation of each other, thus affecting the speed of the patient's recovery of physiological functions

Method used

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  • Improved human cervical veterbra saddle joint
  • Improved human cervical veterbra saddle joint
  • Improved human cervical veterbra saddle joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention is further described below by way of examples, but is not limited to the examples.

[0025] Embodiment, as shown in the accompanying drawings, the base plate of the upper joint is rectangular, its length is 13mm, width is 12.30mm, thickness is 2mm, the bottom width of the dovetail groove is 7.75mm, the mouth of the groove is 6mm, and the depth is 1.25mm , the height of the stopper is 3.5mm, the height of the thorns is 1mm, a total of several are distributed on the back of the substrate, the base of the thorns is square, and the side length is 1mm. The dovetail-shaped convex groove on the dorsal surface of the superior saddle facet joint has a base width of 6 mm, a top of 7.75 mm, and a depth of 1.25 mm. The back width of the upper saddle joint is 11 mm, the length is 15 mm, and the thickness is 2 mm. The sagittal plane radius of the upper saddle joint back is 7.44 mm, and the coronal plane radius is 13.45 mm. The base plate of the lower joint is r...

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Abstract

The improved human cervical vertebra saddle joint consists of upper and lower semi-joints fitted each other. Each of the semi-joint includes one semi-joint body and one seat embedded together via dovetail slot structure. The upper semi-joint and the lower semi-joint are fitted via saddle surface. The back side of the seat has lugs, pearl surface and / or hydroxyapatite coating and carved sheet to facilitate the combination between the joint and cervical vertebra bone. The joint may be implanted into the pathological change part of cervical interverterbral disc via surgical operation.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a human cervical saddle joint. Background technique [0002] The human cervical spine is the segment with the smallest volume in the spine, but with the greatest flexibility and the highest activity frequency. Due to the continuous bearing of various loads, strains, and the extension of life expectancy, the incidence of cervical instability, cervical disc herniation, and cervical spondylosis caused by degenerative changes has become the most common disease in orthopedic clinics, and many patients may Because the lesion invades the spinal cord nerve tissue, it causes limb dysfunction and even quadriplegia, causing great pain to the patient himself and his relatives. At present, cervical intervertebral space decompression and fusion are mostly used in clinical treatment of the above diseases, that is, bone graft plate internal fixation or interfacial bone graft fusion. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/44A61F2002/30001
Inventor 沈强
Owner 沈强