Synarthrosis device for waist articular process and implantation device thereof

A technology of fusion device and lumbar joint, which is applied in the medical field, achieves the effect of good use effect, reduction of dura mater tear, and simple implantation device

Inactive Publication Date: 2009-05-20
崔志明 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a rigorous literature search, no reports of lumbar facet fusions were found

Method used

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  • Synarthrosis device for waist articular process and implantation device thereof
  • Synarthrosis device for waist articular process and implantation device thereof
  • Synarthrosis device for waist articular process and implantation device thereof

Examples

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Embodiment Construction

[0025] A lumbar facet joint fusion device, comprising an oblate spheroid (i.e., a form in which a part is cut off at both ends of the spheroid, and the planes of the two ends are parallel to each other) 1, the upper ends of the oblate spheroid are respectively provided with overlapping central axes and the same diameter. , Lower cylinder 2,3; The diameter of oblate spheroid (being the diameter of the thickest part) is 6mm, high 4mm; The diameter of upper and lower cylinder is 4mm, the height of upper cylinder is 2mm, and the height of lower cylinder is 1mm; Both the oblate spheroid and the upper and lower cylinders are made of cortical bone material of adult femur.

[0026] An implantation device of a lumbar facet joint fusion device, including a positioner, a working channel, a straight drill, a ball drill, and an implanter; wherein:

[0027] (1) The locator includes a steel needle rod 4, the front end of the steel needle rod is provided with an insertion head 5, the diameter...

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Abstract

The invention discloses a waist joint zygapophysis cage and an implanting device thereof. The waist joint zygapophysis cage comprises an oblate spheroid, and both ends of the oblate spheroid are provided with an upper cylinder and a lower cylinder respectively which have coincided center shafts and the same diameter; the oblate spheroid is 6 mm in diameter and 4 mm in height; the diameters of the upper cylinder and the lower cylinder are 2 mm, the upper cylinder is 2 mm in height, and the lower cylinder is 1mm in height; and the oblate spheroid, the upper cylinder and the lower cylinder are made of cortical bone materials of adult thighbone. The implanting device comprises a positioning device, a working channel, a straight drill, a spherical drill and an implanting machine. The waist joint zygapophysis cage has the advantages of improving the medium and long term fusion rates of the lumbar facet joint and the remission rate of postoperative symptoms, eliminating the loosening and breaking of bolts and reducing side effects of bolts such as neurologic damage and the like caused by epidural rupture and vertebral canal puncture. The implanting device has the advantages of simple structure, easy operation and good use effect.

Description

Technical field: [0001] This patent relates to medical technology, which is a set of surgical instruments and human implants, specifically, a lumbar facet joint fusion device and the supporting surgical instruments required for the implantation of the fusion device. Background technique: [0002] The facet joint is the only truly movable joint in the spine. It is composed of the articular surfaces of the upper and lower facet joints of adjacent vertebrae. It is a planar joint and can only slide slightly. However, the sum of the movements between the vertebrae is large, which can play the role of guiding, anti-rotation, anti-compression and anti-shear. In the lumbar spine, the articular surfaces of the facets are nearly sagittal, limiting rotational movement and allowing flexible flexion and extension. The axial load carried by the facet joints of the lumbar spine accounts for 10%-20% of the total load of the spine. The facet joints mainly play the role of anti-rotation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/30A61F2/46A61B17/56
Inventor 崔志明张金波保国锋
Owner 崔志明
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