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US6371990: Annulus fibrosis augmentation methods and apparatus

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Filing Information

Inventor(s) Bret A. Ferree ·
Assignee(s) None listed in document.
Attorney/Agent(s) Gifford, Krass, Groh, Sprinkle, Anderson & Citkowski, PC ·
Primary Examiner David H. Willse ·
Assistant Examiner Suzette J. Jackson ·
Application Number US9690536
Filing date 10/16/2000
Issue date 04/16/2002
Predicted expiration date 10/13/2019
Patent term adjustment 5
U.S. Classifications 623/171.6  · 623/908  ·
International Classifications --
Kind CodeB1
International Classifications 623 1711 · 623 1712 · 623 1716 · 623908 · 128898 · 606 69 ·
Related U.S. Application DataREFERENCE TO RELATED APPLICATIONS
This application claims priority from U.S. provisional application Ser. No. 60/159,488, filed Oct. 14, 1999, and is a continuation-in-part of U.S. patent application Ser. Nos. 09/638,726, filed Aug. 14, 2000; and 09/415,382, filed Oct. 8, 1999, the entire contents of each application being incorporated herein by reference.
19 Claims, 4 Drawings


Abstract

Apparatus and methods aid the annulus in controlling vertebral motion, thereby preventing additional annular tears, and decreasing pain from annular tears. A biocompatible fabric or mesh is attached to the annulus. The material may be attached to the inside and/or outside of the annulus by stitches, staples, adhesives, or other suitable techniques. Alternatively, the fabric may be attached to the vertebra above and below the disc by screws, staples, tacks, or porous material for bone ingrowth such as titanium.

Independent Claims | See all claims (19)

  1. 1. A method of fortifying an annulus fibrosis having an inner wall and an outer wall between adjacent vertebrae with opposing endplates, the method comprising the steps of: forming a hole through the annulus sufficient to access the inner wall; covering at least a portion of the inner wall with a first layer of flexible, biocompatible material; fastening the first layer of material to the inner wall of the annulus at one or more points; and closing the hole in the annulus.
  2. 10. In disc-replacement surgery of the type wherein one or more prosthetic disc elements are inserted into an intervertebral disc space through an annulus fibrosis having an inner wall and an outer wall between adjacent vertebra, the method comprising: lining at least a portion of the inner wall of the annulus fibrosis with a layer of flexible, biocompatible material as a protective barrier against tearing.

References Cited

U.S. Patent Documents

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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US6371990 Bret A. Ferree Apr 2002
US6454804 Bret A. Ferree Sep 2002