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Bone connector adapted for joining cut bone ends

  • US 5,643,267 A
  • Filed: 03/01/1995
  • Issued: 07/01/1997
  • Est. Priority Date: 03/10/1992
  • Status: Expired due to Fees
First Claim
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1. A bone connector comprising:

  • a first joint which is adapted to be inserted and secured in one of two cut bone pieces to be interconnected at the cut end thereof, said first joint comprising a substantially cylindrical body having a predetermined diameter and threads surrounding a peripheral surface thereof for screw engaging in the cortical bone of one of the two cut bone pieces, and a substantially flat end surface which is adapted to be substantially flush with the cut end of one of the two cut bone pieces, the cut end substantially encircling said substantially flat end surface upon insertion of said first joint;

    a second joint which is adapted to be inserted and secured in the other of the two cut bone pieces at the cut end thereof, said second joint comprising a substantially cylindrical body having a diameter substantially equal to said predetermined diameter and threads surrounding a peripheral surface thereof for screw engaging in the cortical bone of one of the two cut bone pieces, and a substantially flat end surface which is adapted to be substantially flush with the cut end of the other of the two cut bone pieces, the cut end substantially encircling said substantially flat end surface of said second joint upon insertion of said second joint;

    said first joint further comprising a stepped engaging groove extending through said substantially flat end surface in a direction substantially perpendicular to a longitudinal axis of said substantially cylindrical body, wherein said stepped engaging groove comprises a first groove having a first width meeting said substantially flat end surface, and a second groove having a second width greater than said first width, said second groove positioned within said cylindrical body and extending from said first groove; and

    said second joint further comprising a pair of engaging projections fixed to and extending from said substantially flat end surface, wherein each said engaging projection comprises a leg portion substantially perpendicular to said substantially flat end surface and engageable with said first groove, and a projection which projects substantially perpendicularly from said leg portion and is engageable with said second groove, wherein said engaging projections engage with said stepped engaging groove to retain said substantially flat end surfaces in contact with one another.

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