Lumbar facet joint fusion device and its implantation device

A technology for implanting a device and a fusion device, which is applied in the medical field and achieves the effect of simple implantation device, reduction of dural tear, and good use effect.

Inactive Publication Date: 2012-02-15
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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  • Lumbar facet joint fusion device and its implantation device
  • Lumbar facet joint fusion device and its implantation device
  • Lumbar facet joint fusion device and its implantation device

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 lumbar facet joint fusion device and its implantation device. The lumbar facet joint fusion device comprises an oblate spheroid, and the two ends of the oblate spheroid are respectively provided with upper and lower cylinders with overlapping central axes and the same diameter; the oblate spheroid The diameter of the upper and lower cylinders is 6mm and the height is 4mm; the diameter of the upper and lower cylinders is 4mm, the height of the upper cylinder is 2mm, and the height of the lower cylinder is 1mm; the oblate spheroid and the upper and lower cylinders are made of cortical bone material of adult femur. Implantation devices include positioners, working channels, straight drills, ball drills, and implanters. The present invention can improve the fusion rate of lumbar facet joints in the medium and long term and the relief rate of postoperative symptoms, eliminate the loosening and breakage of screws, and reduce the side effects of screws such as dura mater tearing, puncture into spinal canal, and nerve damage. The implanting device is simple, easy to operate, and has 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 Patents(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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