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Variable length fixation device

  • US 4,940,467 A
  • Filed: 11/30/1989
  • Issued: 07/10/1990
  • Est. Priority Date: 02/03/1988
  • Status: Expired due to Fees
First Claim
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1. A screw for fixing proximal and distal fragments in a bone fracture, comprising(A) a first and second element that(1) are non-separably interconnected,(2) each have a longitudinal axis in line with the other,(3) longitudinally telescope with each other, and(4) have means for rotationally fixing the elements to each other;

  • (B) the first element having(1) a first shank portion, and(2) screw threads at one end of the first shank portion integral therewith for engaging the distal fragment;

    (C) the second element having(1) a second shank portion in the form of a sleeve, free of threads on its outer surface for engaging the proximal fragment that longitudinally, slidably fits over the first shank portion of the first element, and(2) a head at an end of the second shank portion remote from the screw threads on the first shank portion for receiving means for turning the screw.

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