US 11,666,386 B2
Surgical site displacement tracking
Arno Blau, Balingen (DE); and Bernd Simon, Kiel (DE)
Assigned to Stryker European Operations Holdings LLC, Kalamazoo, MI (US)
Filed by Stryker European Operations Holdings LLC, Kalamazoo, MI (US)
Filed on Feb. 10, 2021, as Appl. No. 17/172,460.
Application 17/172,460 is a continuation of application No. 16/317,649, granted, now 10,925,674, issued on Feb. 23, 2021, previously published as PCT/US2016/042724, filed on Jul. 18, 2016.
Prior Publication US 2021/0186616 A1, Jun. 24, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 34/10 (2016.01); G06T 7/13 (2017.01); G06T 7/33 (2017.01); G06T 7/00 (2017.01); A61B 90/00 (2016.01); G06T 7/12 (2017.01); A61B 34/20 (2016.01)
CPC A61B 34/10 (2016.02) [A61B 90/37 (2016.02); G06T 7/0014 (2013.01); G06T 7/0016 (2013.01); G06T 7/12 (2017.01); G06T 7/13 (2017.01); G06T 7/337 (2017.01); A61B 2034/104 (2016.02); A61B 2034/105 (2016.02); A61B 2034/2065 (2016.02); A61B 2090/3764 (2016.02); G06T 2207/10116 (2013.01); G06T 2207/30008 (2013.01); G06T 2207/30052 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for displacement tracking during positioning and fixing of an implant in a bone, in particular in a hip bone, the method comprising:
superimposing an image of the bone with at least one reference image, wherein the image of the bone is taken from a first angle and the at least one reference image is taken from a second angle, wherein the difference between the first angle and the second angle is no more than 5°;
visualizing a relationship between the image of the bone and the at least one reference image for tracking a displacement of the bone relative to an implant;
distinguishing between primary structures and non-primary structures in the image of the bone and in the at least one reference image; and
removing the non-primary structures and depicting only the primary structures in the image of the bone and in the at least one reference image;
wherein each of the primary structures is at least one of a bone, a bone shape, a bone fragment, an implant, a reference body and/or an additional reference object.