US 12,185,998 B2
Bone screw and method of manufacture
Dale A. Tempco, Germantown, TN (US); Rodney Ray Ballard, Lakeland, TN (US); Keith E. Miller, Germantown, TN (US); and William Alan Rezach, Covington, TN (US)
Assigned to WARSAW ORTHOPEDIC INC., Warsaw, IN (US)
Filed by WARSAW ORTHOPEDIC INC., Warsaw, IN (US)
Filed on Dec. 13, 2023, as Appl. No. 18/538,384.
Application 18/538,384 is a continuation of application No. 17/543,865, filed on Dec. 7, 2021, granted, now 11,857,233.
Application 17/543,865 is a continuation of application No. 15/975,389, filed on May 9, 2018, granted, now 11,224,470, issued on Jan. 18, 2022.
Prior Publication US 2024/0115301 A1, Apr. 11, 2024
Int. Cl. A61B 17/86 (2006.01); A61B 17/70 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/8625 (2013.01) [A61B 17/7059 (2013.01); A61B 17/866 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/00862 (2013.01); A61B 17/7001 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A bone screw comprising:
a shaft defining a longitudinal axis, the shaft including a proximal portion and a distal portion, the proximal portion comprising a first thread, the distal portion comprising an inner core and a wall disposed about the inner core, the inner core having a variable configuration and comprising a uniformly tapered surface relative to the longitudinal axis, the inner core having a trabecular configuration, the wall defining a plurality of spaced apart struts and lattices positioned between the struts, the struts having a solid surface relative to the lattices, the distal portion comprising a second thread, a portion of the second thread extending outwardly from the wall.