US 12,453,590 B2
Tissue excision, cutting, and removal systems and methods
Nasser Rafiee, Andover, MA (US); Stuart Macdonald, Andover, MA (US); Rany Busold, Andover, MA (US); Alexis Balcom, Andover, MA (US); and Morgan House, Andover, MA (US)
Assigned to Transmural Systems LLC, Andover, MA (US)
Filed by Transmural Systems LLC, Andover, MA (US)
Filed on Aug. 31, 2021, as Appl. No. 17/462,547.
Application 17/462,547 is a continuation of application No. 17/086,431, filed on Nov. 1, 2020, granted, now 11,950,827.
Application 17/086,431 is a continuation of application No. PCT/US2020/055160, filed on Oct. 9, 2020.
Claims priority of provisional application 62/913,150, filed on Oct. 9, 2019.
Claims priority of provisional application 62/913,158, filed on Oct. 9, 2019.
Claims priority of provisional application 62/924,358, filed on Oct. 22, 2019.
Claims priority of provisional application 62/939,907, filed on Nov. 25, 2019.
Claims priority of provisional application 62/939,877, filed on Nov. 25, 2019.
Claims priority of provisional application 63/047,995, filed on Jul. 3, 2020.
Claims priority of provisional application 63/052,450, filed on Jul. 15, 2020.
Claims priority of provisional application 63/077,579, filed on Sep. 12, 2020.
Prior Publication US 2022/0054186 A1, Feb. 24, 2022
Int. Cl. A61B 18/14 (2006.01); A61B 18/08 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01)
CPC A61B 18/082 (2013.01) [A61B 18/1442 (2013.01); A61B 90/39 (2016.02); A61B 2018/00369 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/141 (2013.01); A61B 2018/1452 (2013.01); A61B 2090/3966 (2016.02)] 14 Claims
OG exemplary drawing
 
1. A device to remove a plurality of valve leaflets in a single cutting operation, comprising:
an outer electrode defined by a zig-zag shaped leading edge defining a plurality of proximally facing tips to be received within the cusps of a cardiac valve, the outer electrode being configured to be disposed radially outwardly with respect to leaflets of the cardiac valve, wherein each proximally facing tip is coupled to a respective distally extending lead tube, each said lead tube including a guidewire slidably disposed therein, each said guidewire being configured to be advanced along a proximal direction out of a proximally-facing opening of each lead tube; and
an inner electrode disposed concentrically within the outer electrode, the inner electrode being defined by a zig-zag shaped leading edge complementing the zig zag shape of the leading edge of the outer electrode, the inner electrode defining a plurality of proximally facing tips, the inner electrode being configured to be received within an orifice of the cardiac valve radially inwardly with respect to the cardiac valve leaflets;
wherein the inner electrode can be rotated about a central axis with respect to the outer electrode, and further wherein, in a first mode of operation, a bipolar cutting circuit is completed by passing electrical current from one of the inner electrode and the outer electrode to the other of the inner electrode and the outer electrode.