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Screws of cortical bone having a trailing end configured to cooperatively engage an implant

  • US 7,063,701 B2
  • Filed: 10/02/2001
  • Issued: 06/20/2006
  • Est. Priority Date: 05/05/1999
  • Status: Expired due to Fees
First Claim
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1. A screw formed of cortical bone for use in the human body with an implant having a screw hole for receiving at least a portion of a screw therethrough, said screw comprising:

  • a leading end, a trailing end apposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length;

    a thread extending from said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant;

    said trailing end being configured to cooperatively engage at least a portion of the screw hole of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is threaded through the screw hole to attach the implant to a bone portion of the human body; and

    said screw being formed substantially of cortical bone of a single cortical thickness.

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