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US20030204259: Multiple facet joint replacement

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Filing Information

Inventor(s) T. Fallin · Robert Hoy · E. Goble ·
Assignee(s) None listed in document.
Correspondent Mark J. Pandiscio Pandiscio & Pandiscio ·
Application Number US10420467
Filing date 04/22/2003
Publication date 10/30/2003
Predicted expiration date 12/13/2020
U.S. Classifications 623/17.11  ·
International Classifications A61F002/44  ·
Kind CodeA1
18 Claims, 18 Drawings


Abstract

A prosthesis for the replacement of multiple diseased or traumatized spinal facets comprises a portion that replaces at least a bony portion of the facets to be replaced and where the prosthesis attaches to the vertebra in a manner that does not require attachment to, or abutment against, the lamina. Multiple configurations of the prosthesis provide for replacement of the two inferior facets, the two superior facets, a superior and inferior facet, or all four facets. A method of installing the prosthesis is provided that is comprised of the steps of resecting at least a portion of the facets that carry the diseased or traumatized spinal facets and attaching the prosthesis in a manner that does not require attachment or abutment against the lamina.

Independent Claims | See all claims (18)

  1. 1. A prosthesis for the replacement of at least two facets located on a mammalian vertebra, comprising: at least one bone contacting surface that is adapted to be secured to a surface of the vertebra; at least two bearing surfaces for articulating with other facets, said at least two bearing surfaces being connected to said at least one bone contacting surface; and wherein no portion of said prosthesis is supported by the lamina of the vertebra.
  2. 11. A method for replacing at least two facets on a mammalian vertebra, comprising the steps of: resecting a pair of facets on the vertebra; and attaching a prosthesis to the vertebra so that a pair of bearing surfaces on the prosthesis are positioned in place of the resected facets, wherein the prosthesis is configured so that no portion of said prosthesis is supported by the lamina of the vertebra.
  3. 12. A method for replacing facets on two adjacent vertebra, comprising the steps of: resecting at least a bony portion of the inferior facets of a superior vertebra; attaching a first prosthesis that replaces said inferior facets of said superior vertebra; resecting at least a bony portion of the superior facets of an inferior vertebra; and attaching a second prosthesis that replaces said superior facets of said inferior vertebra; wherein no portion of said first prosthesis is supported by the lamina of said superior vertebra, and further wherein no portion of said second prosthesis is supported by the lamina of said inferior vertebra.
  4. 13. A method for replacing facets on three or more vertebra, comprising the steps of: resecting at least a bony portion of the inferior facets of a most superior vertebra; attaching a first prosthesis that replaces said inferior facets of said most superior vertebra; resecting at least a bony portion of the superior facets of a most inferior vertebra; attaching a second prosthesis that replaces said superior facets of said most inferior vertebra; resecting at least a bony portion of all of the facets of at least one intermediate vertebra located between said most superior vertebra and said most inferior vertebra; wherein, for each of said at least one intermediate vertebra, a prosthesis is attached that replaces all facets of said intermediate vertebra.
  5. 14. A spinal implant kit for the replacement of facets, said implant kit comprising: one facet prosthesis adapted to replace two superior facets; one facet prosthesis adapted to replace two inferior facets; and one facet prosthesis adapted to replace two superior facets and two inferior facets.
  6. 15. A prosthesis for the replacement of a pair of spinal facets, said prosthesis comprising: a first vertical member having a first end and a second end, said first end being adapted for disposition against, and attachment to, a first pedicle of a vertebra, and said second end comprising a bearing surface for engagement with a facet of an adjacent vertebra; a second vertical member having a first end and a second end, said first end being adapted for disposition against, and attachment to, the other pedicle of the vertebra, said second end comprising a bearing surface with a facet of an adjacent vertebra; and a bridge connecting said second end of said first vertical member to said second end of said second vertical member.
  7. 17. A spinal implant kit for the replacement of facets, said implant kit comprising: a superior facet prosthesis adapted to replace two superior facets; an inferior facet prosthesis adapted to replace two inferior facets; wherein no portion of said superior facet prosthesis is supported by a lamina of a vertebra; and wherein no portion of said inferior facet prosthesis is supported by a lamina of a vertebra.
  8. 18. A prosthesis for the replacement of a pair of spinal facets, said prosthesis comprising: a first vertical member having a first end and a second end, said first end being adapted for disposition against, and attachment to, a first pedicle of a vertebra, and said second end comprising a bearing surface for engagement with a facet of an adjacent vertebra; a second vertical member having a first end and a second end, said first end being adapted for disposition against, and attachment to, the other pedicle of the vertebra, said second end comprising a bearing surface with a facet of an adjacent vertebra; and a bridge connecting said first vertical member to said second vertical member; wherein said first vertical member, said second vertical member and said bridge are formed so that said prosthesis is displaced from the lamina of the vertebra when said first end of said first vertical member is disposed against, and attached to, the first pedicle of a vertebra and said first end of said second vertical member is disposed against, and attached to, the other pedicle of the vertebra.

References Cited

The current document has no citations.

Referenced By

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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20020072800 T. Fallin et al. Jun 2002
US6565605 MedicineLodge, Inc. E. Marlowe Goble et al. May 2003
US20030204259 T. Fallin et al. Oct 2003
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