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Unilateral external fixation device

  • US 4,895,141 A
  • Filed: 11/19/1987
  • Issued: 01/23/1990
  • Est. Priority Date: 04/26/1984
  • Status: Expired due to Term
First Claim
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1. An external fixation device for positioning and immobilizing the distal segment and proximal segment of a fractured bone to reduce the fracture, comprising:

  • a distal frame having means for clamping half pins insertable within the distal segment of the fractured bone, said distal frame being formed with a distal hinge element having an arcuate surface;

    a proximal frame having means for clamping half pins insertable within the proximal segment of the fractured bone, said proximal frame being formed with a proximal hinge element having an arcuate surface matable with said arcuate surface of said distal hinge element of said distal frame;

    means for interconnecting said distal hinge element with said proximal hinge element so that said mating arcuate surfaces thereof are movable relative to one another along a partially spherical-shaped surface defined by a radius of fixed length having an origin at approximately the center of the fracture to permit pivotal movement of said distal frame relative to said proximal frame for aligning the distal segment with the proximal segment of the fractured bone.

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