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Osseous surgical implant particularly for an intervertebral stabilizer

  • US 5,387,213 A
  • Filed: 08/20/1993
  • Issued: 02/07/1995
  • Est. Priority Date: 02/05/1991
  • Status: Expired due to Fees
First Claim
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1. A surgical implant for connecting two supple ligaments to a vertebra, comprising:

  • an intra-osseous rod having a first end for implanting into a vertebra and an extra-osseous head extending outwardly of the vertebra,said extra-osseous head having two stepped portions with peripheral surfaces defining two ligament retaining zones with sides,each of said two ligament retaining zones having a shoulder forming an axial ligament abutment on the sides of said two ligament retaining zones closest to said first end,two supple ligaments, each supple ligament having an initial tension and being retained between two different consecutive vertebrae,one of said ligament retaining zones retains one of said supple ligaments axially spaced from the vertebra by the corresponding shoulder,the other of said ligament retaining zones retains the other of said supple ligaments axially spaced from the one supple ligament by the corresponding shoulder, andwherein said shoulders prevent progressive wear of said supple ligaments due to friction with the vertebrae and each other, so that the initial tension of the ligaments on the extra-osseous head is maintained and anatomical defects are corrected without impeding natural movement of the vertebrae.

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