US 12,274,493 B2
Combination electrosurgical and mechanical resection device
Sean Doll, Cedar Park, TX (US); Bob Lathrop, Lawrence, MA (US); and Craig Di-Stefano, Andover, MA (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. 17/433,026
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte Limited, Singapore (SG)
PCT Filed Feb. 24, 2020, PCT No. PCT/US2020/019479
§ 371(c)(1), (2) Date Aug. 23, 2021,
PCT Pub. No. WO2020/172659, PCT Pub. Date Aug. 27, 2020.
Claims priority of provisional application 62/853,972, filed on May 29, 2019.
Claims priority of provisional application 62/809,286, filed on Feb. 22, 2019.
Prior Publication US 2022/0160425 A1, May 26, 2022
Int. Cl. A61B 18/12 (2006.01); A61B 18/16 (2006.01); A61B 18/00 (2006.01); A61B 18/14 (2006.01)
CPC A61B 18/16 (2013.01) [A61B 18/1206 (2013.01); A61B 2018/00077 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00208 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00744 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00916 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1412 (2013.01); A61B 2018/162 (2013.01); A61B 2218/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A combination medical device for removing and treating tissue in a patient, comprising:
a handle portion and a blade portion, the blade portion comprising an outer sleeve having a lumen with an inner shaft disposed therein, the outer sleeve having a window with a cutting edge, configured to mechanically cut tissue when the inner shaft rotates;
wherein the outer sleeve defines an exposed electrically conductive portion with a lateral opening therethough, the lateral opening circumferentially spaced from and coextensive with the window, the exposed electrically conductive portion defining a return electrode; and
wherein a dielectric spacer is coupled to the outer sleeve and extends through the lateral opening; and wherein the dielectric spacer includes a cavity that nests an active electrode and electrically isolates the active electrode from the return electrode.