US 12,324,614 B2
Self-holding screw head
Nils Zander, Eckernförde (DE); and Manfred Wieland, Kiel (DE)
Assigned to Stryker European Operations Holdings LLC, Portage, MI (US)
Filed by Stryker European Operations Holdings LLC, Kalamazoo, MI (US)
Filed on Feb. 6, 2024, as Appl. No. 18/433,805.
Application 18/433,805 is a continuation of application No. 17/851,311, filed on Jun. 28, 2022, granted, now 11,925,399.
Application 17/851,311 is a continuation of application No. 16/518,110, filed on Jul. 22, 2019, granted, now 11,432,861, issued on Sep. 6, 2022.
Application 16/518,110 is a continuation of application No. 15/399,233, filed on Jan. 5, 2017, granted, now 10,426,535, issued on Oct. 1, 2019.
Prior Publication US 2024/0238021 A1, Jul. 18, 2024
Int. Cl. A61B 17/86 (2006.01); A61B 17/88 (2006.01)
CPC A61B 17/862 (2013.01) [A61B 17/8891 (2013.01); A61B 17/8615 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of implanting a fastener in a bone comprising:
engaging a driver instrument with an internal drive on a head of a fastener, the head having a threaded outer surface;
rotating a sleeve onto the head by engaging a flared opening at a leading end of the sleeve with a surface of the head complementary to the flared opening, the flared opening being defined by a threaded inner surface of a wall of the sleeve, a root of the threaded inner sleeve tapering continuously along a length of the flared opening to a rim of the sleeve, the sleeve advancing over a length of the head with continued rotation of the sleeve until the rim of the sleeve arrives at an inner end of the head having a maximum diameter of the fastener; and
driving the fastener into the bone using the driver instrument while the sleeve is engaged to the head of the fastener.