US 12,144,551 B1
Computer-assisted tissue navigation
Daniel Farley, Memphis, TN (US); and Johnny L. Wolfe, Arlington, TN (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed on Jun. 25, 2020, as Appl. No. 16/911,991.
Claims priority of provisional application 62/867,126, filed on Jun. 26, 2019.
Int. Cl. A61B 34/10 (2016.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01); G06F 3/01 (2006.01); G06T 7/11 (2017.01)
CPC A61B 34/10 (2016.02) [A61B 34/20 (2016.02); A61B 90/39 (2016.02); G06F 3/011 (2013.01); G06T 7/11 (2017.01); A61B 2034/102 (2016.02); A61B 2034/105 (2016.02); A61B 2034/107 (2016.02); A61B 2034/2055 (2016.02); A61B 2034/2065 (2016.02); A61B 2090/3954 (2016.02); G06T 2207/10088 (2013.01); G06T 2207/30052 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a computer system, preoperative patient image data for a patient from a magnetic resonance imaging (MRI) device, the preoperative patient image data comprising location data associated with at least one fiducial marker placed on the patient preoperatively, wherein the at least one fiducial marker is non-magnetic;
segmenting, by the computer system, a soft tissue anatomical structure from a bone anatomical structure in the preoperative patient image data based on an MRI parameter of the preoperative patient image data;
generating, by the computer system, a 3D soft tissue model corresponding to the soft tissue anatomical structure and a 3D bone model corresponding to the bone anatomical structure of the patient based on the segmented preoperative patient image data, wherein the 3D soft tissue model and the 3D bone model each includes the preoperative location data of the at least one fiducial marker;
receiving, by the computer system, intraoperative fiducial marker location data from an image capture device, wherein the intraoperative fiducial marker location data is associated with the at least one fiducial marker placed preoperatively;
registering, by the computer system, the 3D soft tissue model and the 3D bone model relative to the patient based on the intraoperative fiducial marker location data received from the image capture device and the preoperative location data of the at least one fiducial marker associated with each of the 3D soft tissue model and the 3D bone model; and
causing, by the computer system, a display device to display the registered 3D soft tissue model and the registered 3D bone model relative to the patient.