US 12,220,179 B2
Methods and devices for tracking objects by surgical navigation systems
Kamyar Abhari, Toronto (CA); Kai Michael Hynna, Toronto (CA); Gal Sela, Toronto (CA); and Kirusha Srimohanarajah, Toronto (CA)
Assigned to Synaptive Medical Inc., Toronto (CA)
Filed by Synaptive Medical Inc., Toronto (CA)
Filed on Jun. 9, 2021, as Appl. No. 17/342,888.
Application 17/342,888 is a continuation of application No. 15/821,985, filed on Nov. 24, 2017, granted, now 11,103,314.
Prior Publication US 2021/0346101 A1, Nov. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 34/20 (2016.01); G16H 20/40 (2018.01); G16H 30/40 (2018.01); A61B 17/00 (2006.01); A61B 34/30 (2016.01); A61B 90/00 (2016.01); A61B 90/50 (2016.01); G16H 30/20 (2018.01)
CPC A61B 34/20 (2016.02) [G16H 20/40 (2018.01); G16H 30/40 (2018.01); A61B 2017/00207 (2013.01); A61B 2034/2048 (2016.02); A61B 2034/2051 (2016.02); A61B 2034/2055 (2016.02); A61B 2034/2057 (2016.02); A61B 2034/2065 (2016.02); A61B 2034/2072 (2016.02); A61B 34/30 (2016.02); A61B 90/361 (2016.02); A61B 2090/363 (2016.02); A61B 2090/365 (2016.02); A61B 90/37 (2016.02); A61B 2090/372 (2016.02); A61B 2090/502 (2016.02); G16H 30/20 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A reference body affixable to objects tracked by a surgical navigation system, the reference body comprising:
a substrate having a substrate surface area;
a first layer affixed to the substrate, the first layer including a first totem pattern at a first position centered at an origin of orientation axes, the first totem pattern including a unique identifiable feature distinguishing the first totem pattern from another totem pattern; and
a retroreflective portion affixed to the substrate at a second position from the origin, wherein the retroreflective portion is detectable by an optical imaging device of the surgical navigation system for determining position information of the reference body in a surgical navigation coordinate space.