US 11,850,170 B2
Surgical instrumentation assembly for positioning an ankle prosthesis
Vincent Coulange, Lyons (FR); Sophie Genna, Venon (FR); Yann Brunnarius, Chatuzange le Goubet (FR); Emmanuel Lizee, Saint Ismier (FR); Christophe Perineau, Grenoble (FR); Michel Bonnin, Lyons (FR); Christiaan Coetzee, St. Paul, MN (US); Jean-Alain Colombier, Balma (FR); Thierry Judet, Ville d'Avray (FR); and Mark Myerson, Baltimore, MD (US)
Assigned to SMITH & NEPHEW, INC., Memphis, TN (US); SMITH & NEPHEW ORTHOPAEDICS AG, Zug (CH); and SMITH & NEPHEW ASIA PACIFIC PTE. LIMITED, Singapore (SG)
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed on Feb. 22, 2022, as Appl. No. 17/677,401.
Application 16/734,876 is a division of application No. 15/400,557, filed on Jan. 6, 2017, granted, now 10,524,935, issued on Jan. 7, 2020.
Application 17/677,401 is a continuation of application No. 16/734,876, filed on Jan. 6, 2020, granted, now 11,285,023.
Application 15/400,557 is a continuation of application No. 13/669,321, filed on Nov. 5, 2012, granted, now 9,539,115, issued on Jan. 10, 2017.
Claims priority of provisional application 61/555,593, filed on Nov. 4, 2011.
Claims priority of application No. 1251091 (FR), filed on Feb. 6, 2012.
Prior Publication US 2022/0175554 A1, Jun. 9, 2022
Int. Cl. A61F 2/46 (2006.01); A61B 17/17 (2006.01); A61B 17/15 (2006.01); A61F 2/42 (2006.01)
CPC A61F 2/4684 (2013.01) [A61B 17/15 (2013.01); A61B 17/1739 (2013.01); A61B 17/1775 (2016.11); A61F 2/4202 (2013.01); A61F 2002/4205 (2013.01); A61F 2002/4207 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A surgical instrumentation assembly for positioning an ankle prosthesis, the ankle prosthesis including a tibia implant provided with a bone anchoring sagittal stem, a talus implant provided with a talo-calcaneal anchoring keel, and a prosthetic shoe mechanically coupled to the tibia implant, the prosthetic shoe including an articulating surface enabling the talus implant to articulate relative to the tibia implant, the instrumentation assembly comprising:
a tibial phantom adapted for attachment to a tibia of a patient, the tibial phantom including a main plate and a superiorly extending sagittal stem arranged and configured to secure the tibial phantom to the patient's tibia, the sagittal stem of the tibial phantom including a geometric shape similar to the bone anchoring sagittal stem of the tibia implant, the sagittal stem of the tibial phantom including a longitudinal superior-inferior height, an anterior-posterior width, and a medial-lateral thickness, the longitudinal superior-inferior height being greater than the anterior-posterior width, which is greater than the medial-lateral thickness, the sagittal stem of the tibial phantom including an arcuate curved edge at a superior end thereof, the anterior-posterior width adjacent to the main plate being greater than the anterior-posterior width adjacent to the superior end, and
an aiming guide, adapted for setting into place an instrumentation element through a talus and a calcaneus of the patient along an axis for implanting the talo-calcaneal anchoring keel,
wherein the tibial phantom and the aiming guide mechanically engage with each other to allow movement of the aiming guide with respect to the tibial phantom along an anterior-posterior direction and to restrict movement of the tibial phantom and the aiming guide relative to each other along vertical and medio-lateral directions, wherein the aiming guide is configured to guide placement of the instrumentation element.