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US6221109: Method of protecting spinal area

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Filing Information

Inventor(s) Peter Geistlich · Philip J. Boyne · Lothar Schlösser ·
Assignee(s) Ed. Geistlich Söhne AG fur Chemische Industrie ·
Attorney/Agent(s) Rothwell, Figg, Ernst & Manbeck ·
Primary Examiner Michael J. Milano ·
Assistant Examiner Brian Pellegrino ·
Application Number US9396418
Filing date 09/15/1999
Issue date 04/24/2001
Predicted expiration date 09/15/2019
U.S. Classifications 623/171.1  · 623/237.4  ·
International Classifications --
Kind CodeB1
International Classifications 623 1711 · 623 1611 · 623 1712 · 623 1716 · 623 2364 · 623 2371 · 623 2372 · 623 2374 · 606152 ·
16 Claims, 3 Drawings


Abstract

A method of protecting a spinal area of a patient includes the step of positioning a sheet of collagen membrane material so as to surround at least a portion of a patients spinal chord. The sheet of collagen membrane preferably includes at least one barrier layer with a smooth face to inhibit cell adhesion and act as a barrier to prevent passage of cells therethrough. When surgery involves placement of s vertebrae replacement material between vertebrae, the collagen membrane material can be positioned so as to surround at least a portion of the vertebrae replacement material.

Independent Claims | See all claims (16)

  1. 1. A method of protecting a spinal area of a patient comprising positioning a sheet of resorbable collagen membrane material so as to substantially wrap the collagen membrane material around a patients spinal chord wherein said collagen membrane material is comprised of at least one barrier layer having at least one smooth face so as to inhibit cell adhesion thereon and act as a barrier to prevent passage of cells therethrough.
  2. 10. A method of protecting a spinal area of a patient comprising positioning a sheet of resorbable collagen membrane material so as to substantially wrap the collagen membrane material around a patients spinal chord, wherein said sheet is positioned adjacent a dura sheath of said spinal chord, so as to protect said dura sheath, further comprising the step of inserting a vertebrae implant material outside said sheet adjacent said dura sheath, and further positioning a second sheet of collagen membrane material around at least a portion of said vertebrae implant material.
  3. 12. A method of protecting a spinal area of a patient in which a vertebrae implant material has been positioned adjacent to the patients spinal chord in an intervertebral space between two vertebrae, comprising positioning a sheet of resorbable collagen material adjacent the intervertebral space so as to substantially wrap the collagen membrane material around the vertebrae implant material.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US4013078* FEILD JAMES RODNEY Feild Mar 1977
US4863668* University of Utah Griffiths et al. Sep 1989
US4870966* American Cyanamid Company Dellon et al. Oct 1989
US4877029* Brown University Research Foundation Valentini et al. Oct 1989
US5611354* Alleyne Mar 1997
US5830493* Yamanouchi Pharmaceutical Co., Ltd. Yokota et al. Nov 1998
US5837278 Ed Geistlich Sohne AG Fur Chemische Industrie Geistlich et al. Nov 1998

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
WO199625961Aug 1996
* cited by examiner

Referenced By

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