US 11,893,737 B2
Hinge detection for orthopedic fixation
Bernd Gutmann, Hassloch (DE); and Andreas Gamber, Lustadt (DE)
Assigned to Synthes GmbH
Filed by Synthes GmbH, Oberdorf (CH)
Filed on Apr. 14, 2022, as Appl. No. 17/720,371.
Application 17/720,371 is a continuation of application No. 16/839,381, filed on Apr. 3, 2020, granted, now 11,334,997.
Prior Publication US 2022/0237797 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 7/168 (2017.01); G06T 7/00 (2017.01); G16H 30/40 (2018.01); A61B 17/62 (2006.01)
CPC G06T 7/0014 (2013.01) [G06T 7/168 (2017.01); G16H 30/40 (2018.01); A61B 17/62 (2013.01); G06T 2200/04 (2013.01); G06T 2207/30008 (2013.01); G06T 2207/30052 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method comprising:
displaying first and second images of first and second anatomical structure segments with a fixation device attached thereto, the fixation device for correction of a deformity of the first and the second anatomical structure segments, the first and the second images captured from different positions and orientations with respect to one another, the fixation device comprising rings, struts and a plurality of hinges;
receiving indications of first image hinge locations associated with the plurality of hinges in the first image;
detecting hinge candidates in the second image having shapes associated with the plurality of hinges;
identifying candidate second image hinge locations of the hinge candidates in the second image;
calculating, based at least in part on the candidate second image hinge locations, adjusted second image hinge locations associated with the plurality of hinges in the second image; and
determining, based at least in part on the first image hinge locations and the adjusted second image hinge locations, physical locations of the fixation device and the first and the second anatomical structure segments in three-dimensional space.