US 12,167,871 B2
Spinal fastener with serrated thread
Erika Corbin, Mahwah, NJ (US); Lori Dombrowski, Elmwood Park, NJ (US); Charles L. Bush, Jr., Wayne, NJ (US); and Paul R. Rochette, Stanhope, NJ (US)
Assigned to Stryker European Operations Holdings LLC, Portage, MI (US)
Filed by Stryker European Operations Holdings LLC, Kalamazoo, MI (US)
Filed on Jul. 18, 2022, as Appl. No. 17/867,143.
Application 17/867,143 is a continuation of application No. 15/645,264, filed on Jul. 10, 2017, granted, now 11,389,205.
Claims priority of provisional application 62/428,103, filed on Nov. 30, 2016.
Prior Publication US 2022/0346841 A1, Nov. 3, 2022
Int. Cl. A61B 17/70 (2006.01); A61B 17/86 (2006.01)
CPC A61B 17/7032 (2013.01) [A61B 17/7037 (2013.01); A61B 17/86 (2013.01); A61B 17/8625 (2013.01); A61B 17/863 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A fastener configured for spinal applications comprising: a head having a channel adapted to receive a spinal rod; and a shaft extending from the head to a distal tip and having a thread, at least a portion of the thread being serrated, wherein the serrated portion of the thread includes serrations having respective widths measured perpendicular to a longitudinal axis of the shaft, successive widths decreasing in magnitude along a portion of a length of the thread toward the distal tip, wherein each serration includes a peak defined by a linear edge at an abutment between surfaces connecting the peak with adjacent troughs.