US 12,262,896 B2
System and method for tracking resection planes
Riddhit Mitra, Pittsburgh, PA (US); Branislav Jaramaz, Pittsburgh, PA (US); Samuel Dumpe, Beaver, PA (US); and Constantinos Nikou, Monroeville, PA (US)
Assigned to SMITH & NEPHEW, INC., Memphis, TN (US); SMITH & NEPHEW ORTHOPAEDICS AG, Zug (CH); and SMITH & NEPHEW ASIA PACIFIC PTE. LIMITED, Singapore (SG)
Appl. No. 17/056,660
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG); and Smith & Nephew Orthopaedics AG, Zug (CH)
PCT Filed May 20, 2019, PCT No. PCT/US2019/033077
§ 371(c)(1), (2) Date Nov. 18, 2020,
PCT Pub. No. WO2019/222728, PCT Pub. Date Nov. 21, 2019.
Claims priority of provisional application 62/673,575, filed on May 18, 2018.
Prior Publication US 2021/0204963 A1, Jul. 8, 2021
Int. Cl. A61B 17/15 (2006.01); A61B 34/20 (2016.01)
CPC A61B 17/157 (2013.01) [A61B 17/155 (2013.01); A61B 34/20 (2016.02); A61B 2034/2055 (2016.02)] 14 Claims
OG exemplary drawing
 
1. A system for tracking resection planes during a surgical procedure, the system comprising:
an extramedullary alignment system comprising a guide rod;
a cutting block configured to be mounted on an anterior surface of a bone during the surgical procedure, wherein the cutting block comprises at least one cut slot configured to position a resection tool during the surgical procedure and a receiving hole arranged and configured to receive the guide rod;
a pivoting member connecting a first portion of the cutting block comprising the at least one cut slot and a second portion of the cutting block comprising the receiving hole, wherein the pivoting member extends along a coronal plane, and wherein the pivoting member is configured to facilitate rotation of a cut plane defined by the at least one cut slot along a sagittal plane;
one or more markings indicating an angle of the rotation of the cut plane defined by the at least one cut slot along the sagittal plane; and
a position tracker configured to directly couple to the cutting block after the cutting block is mounted on the anterior surface to allow positional tracking of the cutting block by a tracking device during the surgical procedure,
wherein the at least one cut slot is further configured to be movable after the cutting block is mounted on the anterior surface to adjust a slope of the at least one cut slot,
wherein the guide rod is configured to pass through the receiving hole such that the cutting block is translatable along the guide rod, and
wherein the guide rod is substantially aligned to an axis of the bone.