US 12,458,445 B2
Method of sampling relevant surface points of a subject
Ferdinand Storch, Munich (DE); and Jannik Christ, Munich (DE)
Assigned to Brainlab SE, Munich (DE)
Appl. No. 17/602,603
Filed by Brainlab AG, Munich (DE)
PCT Filed Apr. 9, 2020, PCT No. PCT/EP2020/060221
§ 371(c)(1), (2) Date Oct. 8, 2021,
PCT Pub. No. WO2020/208171, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. PCT/EP2019/059156 (WO), filed on Apr. 10, 2019.
Prior Publication US 2022/0202504 A1, Jun. 30, 2022
Int. Cl. A61B 34/20 (2016.01); A61B 5/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 34/20 (2016.02) [A61B 5/0064 (2013.01); A61B 90/39 (2016.02); A61B 2034/2051 (2016.02); A61B 2034/2055 (2016.02); A61B 2090/3937 (2016.02)] 23 Claims
OG exemplary drawing
 
1. A computer-implemented method executed on at least one processor of at least one computer for sampling relevant surface points of a subject for a medical navigation system, the method comprising:
determining, by the at least one processor, a surface registration type for an intended procedure on the subject dependent on the intended procedure, wherein the surface registration type comprises at least one relevant tissue type of at least part of the subject;
determining, by the at least one processor and based on data obtained from a plurality of tracking devices, a position of at least one surface point of the subject using a registration device, the determining the position of the at least one surface point of the subject comprises:
switching between determining, by a contact-based tracking device, the position of the at least one surface point and determining, by a contact-free tracking device, the position of the at least one surface point, wherein the switching is dependent on a determined distance between the registration device and the at least one surface point of the subject;
identifying, by the at least one processor, a tissue type of the subject at the determined at least one surface point; and
automatically validating, by the at least one processor, the at least one surface point dependent on the identified tissue type and the determined surface registration type of the intended procedure, thereby determining a position of at least one relevant surface point and/or at least one non-relevant surface point, wherein the at least one relevant surface point is accepted and the at least one non-relevant surface point is discarded.