US 11,937,885 B2
Co-registration for augmented reality and surgical navigation
Constantinos Nikou, Monroeville, PA (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Appl. No. 17/435,845
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG); and Smith & Nephew Orthopaedics AG, Zug (CH)
PCT Filed Mar. 4, 2020, PCT No. PCT/US2020/020867
§ 371(c)(1), (2) Date Sep. 2, 2021,
PCT Pub. No. WO2020/180917, PCT Pub. Date Sep. 10, 2020.
Claims priority of provisional application 62/813,303, filed on Mar. 4, 2019.
Prior Publication US 2022/0151704 A1, May 19, 2022
Int. Cl. A61B 34/20 (2016.01); A61B 34/10 (2016.01); A61B 90/00 (2016.01); G06T 19/00 (2011.01); G16H 20/40 (2018.01); G16H 30/40 (2018.01); G16H 40/63 (2018.01)
CPC A61B 34/20 (2016.02) [A61B 34/10 (2016.02); A61B 90/37 (2016.02); A61B 90/39 (2016.02); G06T 19/006 (2013.01); G16H 20/40 (2018.01); G16H 30/40 (2018.01); G16H 40/63 (2018.01); A61B 2034/102 (2016.02); A61B 2034/105 (2016.02); A61B 2034/2055 (2016.02); A61B 2090/363 (2016.02); A61B 2090/365 (2016.02); A61B 2090/371 (2016.02); A61B 2090/3937 (2016.02); A61B 2090/3983 (2016.02)] 19 Claims
OG exemplary drawing
 
1. A surgical system comprising:
a tracking device comprising:
a frame, and
a first fiducial marker disposed on the frame, the first fiducial marker configured for use with a surgical navigation tracking system, the tracking device configured to be mounted to a patient;
an augmented reality marker assembly comprising a second fiducial marker configured for use with an augmented reality system, the augmented reality marker assembly configured to be attached to the tracking device at a fixed orientation relative to the frame, the augmented reality marker assembly further comprising a plurality of fastening mechanisms, the plurality of fastening mechanisms configured to removably attach the augmented reality marker assembly to the frame such that the augmented reality marker assembly assumes the fixed orientation;
a sensor assembly configured to identify locations of each of the first fiducial marker and the second fiducial marker; and
a control system communicably connected to the sensor assembly, the control system configured to:
determine a first three-dimensional orientation of the patient by locating the first fiducial marker via the sensor assembly,
determine a second three-dimensional orientation of the augmented reality marker assembly by locating the second fiducial marker via the sensor assembly, and
determine a relationship between the first three-dimensional orientation and the second three-dimensional orientation according to the fixed orientation of the augmented reality marker assembly relative to the tracking device.