Annulus fibrosus prosthesis for intervertebral disc
A fibrous ring and intervertebral disc technology, applied in the field of medical devices, can solve problems such as no therapeutic effect
Inactive Publication Date: 2018-09-11
陈晓东 +1
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However, none of the above have achieved good therapeutic effects in clinical practice.
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[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0031] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...
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The invention relates to a repair apparatus for annulus fibrosus of an intervertebral disc. The intervertebral disc comprises nucleus pulposus in a central part, the annulus fibrosus on a peripheral part as well as an upper cartilage end-plate and a lower cartilage end-plate at two ends, wherein an upper vertebral end-plate is defined by the upper cartilage end-plate and subchondral bone above the upper cartilage end-plate, and the upper vertebral end-plate is located between a cancellous bone in the center of an upper vertebral body and the intervertebral disc; a lower vertebral end-plate is defined by the lower cartilage end-plate and subchondral bone below the lower cartilage end-plate, and the lower vertebral end-plate is located between a cancellous bone in the center of a lower vertebral body and the intervertebral disc. Protrusion of the intervertebral disc can cause rupture of the annulus fibrosus, and subsequently, an annulus fibrosus notch is formed. The repair apparatus for the annulus fibrosus of the intervertebral disc comprises an anchoring piece and a blocking piece, wherein the anchoring piece is inserted in the lower side of the lower vertebral end-plate so as to fix the repair apparatus for the annulus fibrosus of the intervertebral disc; one end of the blocking piece is connected to the anchoring piece and the other end is inserted into the intervertebral disc from the annulus fibrosus notch, so that the annulus fibrosus notch is blocked by the blocking piece in a mode of surrounding the rear upper part of the nucleus pulposus, and the recurrence of herniation of the nucleus pulposus is avoided. By virtue of the repair apparatus, the annulus fibrosus of the intervertebral disc can be better repaired.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a prosthetic device for annulus fibrosus of intervertebral discs. Background technique [0002] The intervertebral disc includes the nucleus pulposus in the central part, the fibrous ring in the peripheral part, and the upper cartilage endplate and the lower cartilage endplate at both ends. The plate is located between the cancellous bone and the intervertebral disc in the center of the upper vertebral body. The inferior cartilage endplate and the underlying subchondral bone together form the lower vertebral body endplate. The inferior vertebral endplate is located between the cancellous bone and the intervertebral disc in the center of the lower vertebral body. between. [0003] Lumbar intervertebral disc herniation is one of the more common diseases, mainly because the various parts of the lumbar intervertebral disc, especially the nucleus pulposus, after different deg...
Claims
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IPC IPC(8): A61B17/56
Inventor 陈晓东白雪岭
Owner 陈晓东