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US20030069643: Tension bearing artificial disc providing a centroid of motion centrally located within an intervertebral space

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Filing Information

Inventor(s) Stephen Tatar · James Ralph ·
Assignee(s) None listed in document.
Correspondent Joseph P. Errico ·
Application Number US10151280
Filing date 05/20/2002
Publication date 04/10/2003
Predicted expiration date 10/04/2021
U.S. Classifications 623/17.13  · 623/17.14  ·
International Classifications A61F002/44  ·
Kind CodeA1
Related U.S. Application DataCROSS-REFERENCE TO RELATED APPLICATION
0001 The present application is a continuing application of U.S. patent application Ser. No. 09/970,479 filed Oct. 4, 2001 and entitled “Intervertebral Spacer Device Utilizing a Spirally Slotted Belleville Washer Having Radially Extending Grooves”, and a continuing application of U.S. patent application Ser. No. 10/140,153 filed May 7, 2002 and entitled “Artificial Intervertebral Disc Having a Flexible Wire Mesh Vertebral Body Contact Element”.
20 Claims, 8 Drawings


Abstract

An artificial intervertebral disc having a pair of opposing plate members for seating against opposing vertebral bone surfaces, separated by a spring mechanism. The preferred spring mechanism is at least one spirally slotted belleville washer having radially extending grooves. One plate member has a centrally located ball-shaped protrusion that is rotatably coupled in a central socket in the narrow end of the belleville washer, and the wide end of the belleville washer is held against the other plate member by a shield with rivets. Therefore, the disc assembly will not come apart under tension loads applied to the plate members, and the location of the ball joint coupling provides the disc assembly with a centroid of motion that is centrally located between the vertebral bone surfaces, both causing the disc assembly to behave similarly in these respects to a healthy natural intervertebral disc.

Independent Claims | See all claims (20)

  1. 1. An artificial intervertebral disc, comprising: a first member having a first vertebral body contact surface; a second member having a second vertebral body contact surface, the first and second members being disposed such that the contact surfaces face away from one another; a coupling by which the first and second members are coupled to one another such that the first and second vertebral body contact surfaces are angulatable relative to one another about a centroid of motion centrally located between the first and second vertebral body contact surfaces, the coupling preventing the uncoupling of the first and second members under a tension load applied to the first and second vertebral body contact surfaces.
  2. 11. A tension bearing artificial intervertebral disc providing a centroid of motion centrally located within an intervertebral space, the artificial intervertebral disc comprising: first and second plates, each having first and second plate surfaces, the first and second plates being disposed in a spaced apart relationship such that the first plate surfaces face toward one another and the second plate surfaces face away from one another; and a restoring force providing element centrally rotatably coupled to the first plate surface of the first plate and coupled to the first plate surface of the second plate such that both compression loads and tension loads applied to the second plate surfaces are counteracted thereby.

References Cited

The current document has no citations.

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US7198644 Aesculap AG & Co. KG Robert Schultz et al. Apr 2007
US7338490 Warsaw Orthopedic, Inc. James Ogilvie et al. Mar 2008
US7625379 Warsaw Orthopedic, Inc. Rolando M Puno et al. Dec 2009
US7585325 Aesculap AG Susanne Schneid et al. Sep 2009
US7204853 Flexuspine, Inc. Charles Gordon et al. Apr 2007
US7316714 Flexuspine, Inc. Charles Gordon et al. Jan 2008
US7549995 Aesculap AG Robert Schultz Jun 2009
US7867279 DePuy Spine, Inc. Douglas L. Hester et al. Jan 2011
US7909869 Flexuspine, Inc. Charles R. Gordon et al. Mar 2011
US7655045 Aesculap Implant Systems, LLC Marc Richelsoph Feb 2010
US7655012 Zimmer Spine, Inc. Gene DiPoto et al. Feb 2010
US7690381 DePuy Spine, Inc. Charles M. Bartish, Jr. et al. Apr 2010
US7708778 Flexuspine, Inc. Charles R. Gordon et al. May 2010
US7717959 Lytton William et al. May 2010
US7740658 Concept Matrix, LLC Walter W. Eckman Jun 2010
US7753957 Accelerated Innovation, LLC Todd James Albert et al. Jul 2010
US7753958 Charles R. Gordon et al. Jul 2010
US7766966 Aesculap Implant Systems, LLC Marc Richelsoph Aug 2010
US7785351 Flexuspine, Inc. Charles R. Gordon et al. Aug 2010
US7794480 Flexuspine, Inc. Charles R. Gordon et al. Sep 2010
US7799082 Flexuspine, Inc. Charles R. Gordon et al. Sep 2010
US7832409 Aesculap Implant Systems, LLC Marc Richelsoph et al. Nov 2010
US6986789 Aesculap AG & Co. KG Robert Schultz et al. Jan 2006
US7959677 Flexuspine, Inc. Michael E. Landry et al. Jun 2011
US7976550 Pioneer Surgical Technology Jeffrey L. Trudeau Jul 2011
US8012212 NuVasive, Inc. Helmut D. Link et al. Sep 2011
US8016886 Altus Partners, LLC Todd James Albert et al. Sep 2011
US8052723 Flexuspine Inc. Charles R. Gordon et al. Nov 2011
US8123810 Charles R. Gordon et al. Feb 2012
US8118869 Flexuspine, Inc. Charles R. Gordon et al. Feb 2012
US8118871 Flexuspine, Inc. Charles R. Gordon et al. Feb 2012
US8118872 Pioneer Surgical Technology, Inc. Jeffrey L. Trudeau et al. Feb 2012
US8147551 Cervitech, Inc. Helmut D. Link et al. Apr 2012
US8187330 Flexuspine, Inc. Jonathan A. Gimbel et al. May 2012
US8157844 Flexuspine, Inc. Jonathan A. Gimbel et al. Apr 2012
US8162994 Flexuspine, Inc. Jonathan A. Gimbel et al. Apr 2012
US8147550 Flexuspine, Inc. Charles R. Gordon et al. Apr 2012
US8257440 Charles R. Gordon et al. Sep 2012
US8267965 Flexuspine, Inc. Jonathan A. Gimbel et al. Sep 2012
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US8603168 --
US8647386 --
US8728163 --
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Patent Family

The current document is not in a family.

Claims 

  1. 1. An artificial intervertebral disc, comprising: a first member having a first vertebral body contact surface; a second member having a second vertebral body contact surface, the first and second members being disposed such that the contact surfaces face away from one another; a coupling by which the first and second members are coupled to one another such that the first and second vertebral body contact surfaces are angulatable relative to one another about a centroid of motion centrally located between the first and second vertebral body contact surfaces, the coupling preventing the uncoupling of the first and second members under a tension load applied to the first and second vertebral body contact surfaces.
  2. 2. The artificial intervertebral disc of claim 1, wherein the coupling comprises a ball and socket joint.
  3. 3. The artificial intervertebral disc of claim 2, wherein the ball and socket joint comprises a radially compressible ball and a curvate socket, the curvate socket having an interior volume and a mouth leading to the interior volume, the curvate socket accommodating the ball for free rotation therein, the ball fitting through the mouth only when radially compressed, the ball being adapted to receive a radial compression preventing element that when applied to the ball prevents the ball from fitting through the mouth.
  4. 4. The artificial intervertebral disc of claim 1, wherein the coupling comprises: a protrusion having a semi-spherical surface; and a restoring force providing element disposed relative to the first and second members such that a compressive load applied to the first and second vertebral body contact surfaces is counteracted by the restoring force providing element, the restoring force providing element having a curvate socket within which the semi-spherical surface of the protrusion seats such that the restoring force providing element is rotatable on the protrusion.
  5. 5. The artificial intervertebral disc of claim 4, wherein the restoring force providing element comprises a belleville washer.
  6. 6. The artificial intervertebral disc of claim 5, wherein the belleville washer has at least one slot.
  7. 7. The artificial intervertebral disc of claim 5, wherein the belleville washer has at least one groove.
  8. 8. The artificial intervertebral disc of claim 4, wherein the protrusion comprises a radially compressible ball and the curvate socket has an interior volume and a mouth leading to the interior volume, the curvate socket accommodating the ball for free rotation therein, the ball fitting through the mouth only when radially compressed, the ball being adapted to receive a radial compression preventing element that when applied to the ball prevents the ball from fitting through the mouth.
  9. 9. The artificial intervertebral disc of claim 8, wherein the ball has an axial bore and the radial compression preventing element comprises a set screw that is receivable by the bore.
  10. 10. The artificial intervertebral disc of claim 4, wherein the first member comprises the protrusion and the mounting further comprises at least one retaining element by which the restoring force providing element is maintained adjacent the second member under the tension load.
  11. 11. A tension bearing artificial intervertebral disc providing a centroid of motion centrally located within an intervertebral space, the artificial intervertebral disc comprising: first and second plates, each having first and second plate surfaces, the first and second plates being disposed in a spaced apart relationship such that the first plate surfaces face toward one another and the second plate surfaces face away from one another; and a restoring force providing element centrally rotatably coupled to the first plate surface of the first plate and coupled to the first plate surface of the second plate such that both compression loads and tension loads applied to the second plate surfaces are counteracted thereby.
  12. 12. The artificial intervertebral disc of claim 11, wherein the restoring force providing element comprises a belleville washer.
  13. 13. The artificial intervertebral disc of claim 12, wherein the belleville washer has at least one slot.
  14. 14. The artificial intervertebral disc of claim 12, wherein the belleville washer has at least one groove.
  15. 15. The artificial intervertebral disc of claim 11, wherein the restoring force providing element is rotatably coupled to the first plate surface by a ball and socket joint.
  16. 16. The artificial intervertebral disc of claim 15, wherein the ball and socket joint comprises a radially compressible ball and a curvate socket, the curvate socket having an interior volume and a mouth leading to the interior volume, the curvate socket accommodating the ball for free rotation therein, the ball fitting through the mouth only when radially compressed, the ball being adapted to receive a radial compression preventing element that when applied to the ball prevents the ball from fitting through the mouth.
  17. 17. The artificial intervertebral disc of claim 16, wherein the first plate surface comprises the radially compressible ball and the restoring force providing element comprises the curvate socket.
  18. 18. The artificial intervertebral disc of claim 17, wherein the restoring force providing element comprises a belleville washer having the curvate socket at a narrow end of the belleville washer.
  19. 19. The artificial intervertebral disc of claim 16, wherein the ball has an axial bore and the radial compression preventing element comprises a set screw that is receivable by the bore.
  20. 20. The artificial intervertebral disc of claim 11, wherein restoring force providing element is coupled to the first plate surface of the second plate by a retaining element by which the restoring force providing element is maintained adjacent the first plate surface of the second plate under the tension load.

Full Specification