US 12,213,686 B2
Knee arthroplasty validation and gap balancing instrumentation
Emily Gogarty, Montreal (CA); Pierre Couture, Montreal (CA); Adam H. Sanford, Minneapolis, MN (US); Frederique DesbiensBlais, Montreal (CA); Marc-Antoine Dufour, Montreal (CA); Vincent Pelletier, Montreal (CA); and Yann Facchinello, Prévost (CA)
Assigned to Orthosoft ULC, Montreal (CA)
Filed by Orthosoft ULC, Montreal (CA)
Filed on Dec. 16, 2021, as Appl. No. 17/552,492.
Claims priority of provisional application 63/126,395, filed on Dec. 16, 2020.
Prior Publication US 2022/0183701 A1, Jun. 16, 2022
Int. Cl. A61B 17/02 (2006.01); A61B 17/16 (2006.01); A61B 34/20 (2016.01); A61B 34/30 (2016.01)
CPC A61B 17/1675 (2013.01) [A61B 34/20 (2016.02); A61B 34/30 (2016.02); A61B 2034/2055 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A knee arthroplasty validation system for intraoperative validation of cut surfaces, the system comprising:
a robotic surgical device including processing circuitry, the robotic surgical device to assist in a tibiofemoral joint resection of a patient tibia or a patient femur, the tibiofemoral joint resection including a horizontal resection and a vertical resection;
a solid knee arthroplasty validation device positioned to contact the horizontal resection and the vertical resection, the solid knee arthroplasty validation device including a horizontal resection validation surface, a top validation surface opposite from the horizontal resection validation surface, a vertical resection validation surface orthogonal to the horizontal resection validation surface, the vertical resection validation surface to contact and validate the vertical resection, a distal portion to validate a posterior tibial plateau resection gap, a proximate portion to validate an anterior tibial plateau resection gap, and an anterior stop configured to rest against a tibial anterior cortex of the patient tibia; and
an optical tracker fixedly attached to the proximate portion of the solid knee arthroplasty validation device;
wherein the knee arthroplasty validation device includes a gap validation thickness between the top validation surface and the horizontal resection validation surface, the gap validation thickness being different in the proximate portion from the distal portion;
wherein the processing circuitry of the robotic surgical device validates the vertical resection validation surface, the posterior tibial plateau resection gap, and the anterior tibial plateau resection gap based on a tracked validation position of the optical tracker and triggers an update on a display to indicate completion of the validation.