×

Device for rotational stabilization of bone segments

  • US 6,533,789 B1
  • Filed: 04/04/2000
  • Issued: 03/18/2003
  • Est. Priority Date: 04/04/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for rotational stabilization of bone segments comprising:

  • a bone lag screw having a bone-engagement end, a distal end, and a keyed cross-sectional profile, the bone-engagement end configured for engaging a first bone segment;

    a bone plate having a flat portion for engaging a second bone segment and a barrel portion having an internal bore for slidably receiving the lag screw; and

    a locking collar having a keyed internal profile that mates with the keyed cross-sectional profile of the lag screw to rotationally couple the locking collar and the lag screw when the lag screw is inserted through the locking collar, and an outer surface configured and dimensioned for (1) free rotation, in a first position within the internal bore of the bone plate barrel portion and (2) frictionally engaging, in a second position, the internal bore of the bone plate barrel portion to resist or prevent rotation of the collar relative to the bone plate, and thereby resist or prevent rotation of the lag screw relative to the bone plate.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×