US 12,064,190 B2
Tracker for a surgical instrument
Fadi Ghanam, Schallstadt (DE); James G. Walen, Portage, MI (US); Clifford Edwin Lambarth, Portage, MI (US); and Caleb Gossens, Portage, MI (US)
Assigned to Stryker European Operations Limited, Co Cork (IE)
Filed by Stryker European Operations Limited, Co Cork (IE)
Filed on Mar. 31, 2021, as Appl. No. 17/219,067.
Application 17/219,067 is a continuation in part of application No. PCT/IB2020/059064, filed on Sep. 28, 2020.
Claims priority of provisional application 62/906,629, filed on Sep. 26, 2019.
Prior Publication US 2021/0236212 A1, Aug. 5, 2021
Int. Cl. A61B 34/20 (2016.01); A61B 90/00 (2016.01); G06T 7/20 (2017.01)
CPC A61B 34/20 (2016.02) [A61B 90/39 (2016.02); G06T 7/20 (2013.01); A61B 2034/2055 (2016.02); A61B 2034/2072 (2016.02); A61B 2090/3979 (2016.02); G06T 2207/10048 (2013.01); G06T 2207/30004 (2013.01); G06T 2207/30208 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An optical tracker for a handheld surgical instrument having a proximal end spaced along an instrument axis from a distal end, the optical tracker comprising:
a tracker frame comprising:
a mounting body; and
an offset body protruding proximally from said mounting body;
at least six optical markers coupled to said tracker frame; and
wherein the at least six optical markers are arranged to form at least two arrays, each array comprising at least three of the at least six optical markers, and a portion of each of the at least two arrays is positioned proximally of said mounting body such that at least two of said at least six optical markers are positioned proximally of said mounting body.