US 12,070,365 B2
System and method for determining the three-dimensional location and orientation of identification markers
Ehud (Udi) Daon, North Vancouver (CA); and Martin Gregory Beckett, Bowen Island (CA)
Assigned to Navigate Surgical Technologies, Inc, Vancouver (CA)
Filed by Navigate Surgical Technologies, Inc., Vancouver (CA)
Filed on Mar. 11, 2022, as Appl. No. 17/692,437.
Application 17/692,437 is a division of application No. 16/409,835, filed on May 12, 2019, granted, now 11,304,777, issued on Apr. 19, 2022.
Application 16/409,835 is a continuation in part of application No. 15/050,140, filed on Feb. 22, 2016, abandoned.
Application 15/050,140 is a continuation in part of application No. 14/598,484, filed on Jan. 16, 2015, granted, now 9,566,123, issued on Feb. 14, 2017.
Application 14/598,484 is a continuation in part of application No. 14/226,708, filed on Mar. 26, 2014, abandoned.
Application 14/598,484 is a continuation in part of application No. 13/822,358, abandoned, previously published as PCT/IL2012/000363, filed on Oct. 21, 2012.
Application 14/226,708 is a continuation in part of application No. 13/571,284, filed on Aug. 9, 2012, granted, now 8,938,282, issued on Jan. 20, 2015.
Claims priority of provisional application 61/803,040, filed on Mar. 18, 2013.
Claims priority of provisional application 61/616,673, filed on Mar. 28, 2012.
Prior Publication US 2022/0265387 A1, Aug. 25, 2022
Int. Cl. A61B 90/94 (2016.01); A61B 90/00 (2016.01); A61C 1/08 (2006.01)
CPC A61B 90/94 (2016.02) [A61B 90/39 (2016.02); A61C 1/082 (2013.01); A61B 2090/3937 (2016.02); A61B 2090/3983 (2016.02); A61C 2204/005 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for tracking a handheld implement bearing a passive vectorized tracking marker permanently integrated with the implement, the marker having an identifiably unique rotationally asymmetric pattern of contrasting elements disposed on the marker, the method comprising:
providing the handheld implement bearing a passive vectorized tracking marker permanently integrated with the implement;
obtaining image information about the implement from a non-stereo optical tracker;
obtaining from a database geometric information about the tracking marker;
identifying the passive vectorized tracking marker on the basis of the unique pattern;
determining within the image information the location of at least one pattern reference point of the passive vectorized tracking marker based on the geometric information, and
determining within the image information a rotational orientation of the passive vectorized tracking marker based on the geometric information.