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Orthopedic screw and method

  • US 6,468,277 B1
  • Filed: 04/04/2000
  • Issued: 10/22/2002
  • Est. Priority Date: 04/04/2000
  • Status: Expired due to Term
First Claim
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1. An orthopedic screw for affixing two sections of tissue together, the screw having:

  • a root having a proximal end and a distal section having a narrowing cross section toward a distal end; and

    a thread atop the root along at least a portion thereof between the proximal end and the distal end, the thread having a helical pitch having a substantially constant value along a leading section extending proximal of the distal end and having a variable value along a trailing section extending proximal of the leading section, wherein the helical pitch decreases along the trailing section to the proximal end of the root, the thread further having;

    a leading face facing the distal end, the leading face making a first angle with a helical axis having a directionality pointing from the proximal to the distal end, the first angle decreasing from a first oblique angle adjacent the distal end to a second oblique angle adjacent the proximal end, the second oblique angle smaller than the first oblique angle; and

    a trailing face facing the proximal end, the trailing face making a second angle with the helical axis, the second angle decreasing from a first acute angle adjacent the distal end to a second acute angle adjacent the proximal end, the second acute angle smaller than the first acute angle.

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