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Vertebral prosthesis

  • US 5,306,310 A
  • Filed: 08/27/1992
  • Issued: 04/26/1994
  • Est. Priority Date: 08/27/1991
  • Status: Expired due to Term
First Claim
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1. An implantable vertebral prosthesis configured to be inserted between adjacent vertebrae comprising:

  • a biocompatible tubular structure with a hollow interior space having a variable length, said tubular structure being formed from two helical springs having substantially equal diameters, said helical springs being connected to each other by screwing one of said helical springs into the other of said helical springs, whereby said length of said tubular structure may be adjusted to a final intermediate distance between the vertebrae by screwing or unscrewing said two helical springs.

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