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US6395033: Dynamic fusion mechanostat devices

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Filing Information

Inventor(s) John R. Pepper ·
Assignee(s) Tyco Healthcare Group LP ·
Primary Examiner Nicholas D. Lucchesi ·
Assistant Examiner Michael B. Priddy ·
Application Number US9545949
Filing date 04/10/2000
Issue date 05/28/2002
Predicted expiration date 04/10/2020
U.S. Classifications 623/171.3  · 623/233.2  · 606/61  ·
International Classifications --
Kind CodeB1
International Classifications 623 1713 · 623 2332 · 623 2358 · 623 2375 · 606 60 · 606 61 ·
8 Claims, 4 Drawings


Abstract

A dynamic bone fusion device for facilitating fusion between bone sections, particularly vertebrae, is selected having certain stiffness to induce specific strain conditions associated with high success rates in bone fusion. Temporary stiffeners that are absorbable by the body may be implemented with the fusion device.

Independent Claims | See all claims (8)

  1. 1. An intervertebral dynamic bone fusion device for dynamically supporting adjacent upper and lower vertebrae to be fused, said device comprising: a spring element positionable within an intervertebral space defined between the adjacent upper and lower vertebrae and having a height slightly greater than the height of the intervertebral space, the spring element adapted to generally linearly oppose the adjacent upper and lower vertebrae, said spring element having a spring constant selected to create a strain range between the adjacent upper and lower vertebrae, said strain range ranging from about 4% to about 8%.
  2. 3. A dynamic bone fusion device for dynamically supporting adjacent upper and lower vertebrae, which comprises: a spring element positionable within an intervertebral space defined between the adjacent upper and lower vertebrae and having a height in an uncompressed condition thereof greater than the height of the intervertebral space, the spring element adapted to generally linearly oppose compressive forces between the adjacent upper and lower vertebrae: and a temporary stiffening element associated with the spring element and adapted to increase stiffness in the direction of the compressive forces, the stiffening element comprising a bioabsorbable material which is gradually fully absorbed after a predetermined period of time.
  3. 6. A method for facilitating fusion of adjacent upper and lower vertebrae, comprising the steps of: accessing an intervertebral space defined between adjacent upper and lower vertebral bone tissues; and positioning a bone fusion device within the intervertebral space, the bone fusion device having a spring constant sufficient to support the adjacent vertebral bone tissues in spaced relation and creating a strain range between the adjacent upper and lower vertebral bone tissues sufficient to initiate and sustain ossification and fusion thereof.

References Cited

U.S. Patent Documents

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Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US7214186 RITLAND STEPHEN Stephen Ritland May 2007
US6607558 AxioMed Spine Corporation James Michael Kuras Aug 2003
US7588577 Wright Medical Technology, Inc. Robert M. Fencl et al. Sep 2009
US7207992 Stephen Ritland Stephen Ritland Apr 2007
US6966910 RITLAND STEPHEN Stephen Ritland Nov 2005
US6991632 RITLAND STEPHEN Stephen Ritland Jan 2006
US7166073 Stephen Ritland Stephen Ritland Jan 2007
US7455639 RITLAND STEPHEN Stephen Ritland Nov 2008
US7655025 Stephen Ritland Feb 2010
US7682375 Stephen Ritland Mar 2010
US7691130 Warsaw Orthopedic, Inc. Aurelien Bruneau et al. Apr 2010
US7695498 Stephen Ritland Apr 2010
US7713271 Piper Medical, Inc. Mark J. Warburton May 2010
US7753939 Stephen Ritland Jul 2010
US7763047 Stephen Ritland Jul 2010
US7857852 AxioMed Spine Corporation James Michael Kuras Dec 2010
US7959679 Intrinsic Therapeutics, Inc. Greg H. Lambrecht et al. Jun 2011
US7959564 Stephen Ritland Jun 2011
US7972337 Intrinsic Therapeutics, Inc. Thomas Boyajian et al. Jul 2011
US7985245 Stephen Ritland Jul 2011
US8002836 Intrinsic Therapeutics, Inc. Gregory H. Lambrecht Aug 2011
US7998213 Intrinsic Therapeutics, Inc. Greg H. Lambrecht et al. Aug 2011
US8025698 Intrinsic Therapeutics, Inc. Gregory H. Lambrecht Sep 2011
US8021399 Stephen Ritland Sep 2011
US8021425 Intrinsic Therapeutics, Inc. Gregory H. Lambrecht Sep 2011
US8034056 Wright Medical Technology, Inc. Robert M. Fencl et al. Oct 2011
US8034081 CollabComl, LLC Jim A. Youssef et al. Oct 2011
US8092453 Piper Medical, Inc. Mark J. Warburton Jan 2012
US8105384 Intrinsic Therapeutics, Inc. Gregory H. Lambrecht et al. Jan 2012
US8100910 Piper Medical, Inc. Mark J. Warburton Jan 2012
US8114082 Intrinsic Therapeutics, Inc. Thomas Boyajian et al. Feb 2012
US8231678 Intrinsic Therapeutics, Inc. Gregory Lambrecht Jul 2012
US8221459 Stephen Ritland Jul 2012
US8262571 Stephen Ritland Sep 2012
US8257437 Intrinsic Therapeutics, Inc. Greg H. Lambrecht et al. Sep 2012
US8323341 Intrinsic Therapeutics, Inc. Gregory Lambrecht et al. Dec 2012
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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
AU4790801 TYCO HEALTHCARE PEPPER JOHN R Oct 2001
US6395033 Tyco Healthcare Group LP John R. Pepper May 2002
US20020198598 John Pepper Dec 2002