US 12,453,603 B2
Patient-specific instrumentation for implant revision surgery
Ramnada Chav, Laval (CA); Jean-Sebastien Merette, Mont-St-Hilaire (CA); Tin Nguyen, Laval (CA); Karine Duval, Montreal (CA); and Pierre Couture, Montreal (CA)
Assigned to ORTHOSOFT ULC, Montreal (CA)
Filed by ORTHOSOFT ULC, Montreal (CA)
Filed on Apr. 30, 2024, as Appl. No. 18/650,600.
Application 18/650,600 is a continuation of application No. 18/154,233, filed on Jan. 13, 2023, granted, now 11,998,280.
Application 18/154,233 is a continuation of application No. 16/217,680, filed on Dec. 12, 2018, granted, now 11,576,725, issued on Feb. 14, 2023.
Claims priority of provisional application 62/597,670, filed on Dec. 12, 2017.
Prior Publication US 2024/0350200 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 34/10 (2016.01); A61B 6/12 (2006.01); A61B 17/15 (2006.01); A61B 17/56 (2006.01); G06T 17/00 (2006.01); G06T 19/20 (2011.01)
CPC A61B 34/10 (2016.02) [A61B 6/12 (2013.01); A61B 17/155 (2013.01); A61B 17/157 (2013.01); G06T 17/00 (2013.01); G06T 19/20 (2013.01); A61B 2017/568 (2013.01); A61B 2034/104 (2016.02); A61B 2034/105 (2016.02); A61B 2034/107 (2016.02); A61B 2034/108 (2016.02); G06T 2200/04 (2013.01); G06T 2200/08 (2013.01); G06T 2210/41 (2013.01); G06T 2219/012 (2013.01); G06T 2219/2021 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for guiding surgical alterations on a bone in revision surgery, comprising:
a processing unit; and
a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for:
obtaining at least one image of at least part of a bone and of an implanted implant on the bone using fluoroscopy, the at least one image being patient specific,
obtaining a virtual model of the implanted implant using an identity of the implanted implant, the virtual model including orientation data for the implanted implant;
overlaying the virtual model of the implanted implant on the at least one image to determine a relative orientation of the implanted implant with respect to the bone in the at least one image, and
guiding alterations in the bone based on the relative orientation between the implanted implant and the bone.