US 12,402,835 B2
Catheter and actuator systems and methods
Nasser Rafiee, Andover, MA (US); Biwei MacDonald, Andover, MA (US); Morgan House, Andover, MA (US); Koosha Rafiee, Andover, MA (US); and Mai Le Diep, Andover, MA (US)
Assigned to Transmural Systems LLC, Andover, MA (US)
Filed by Transmural Systems LLC, Andover, MA (US)
Filed on Dec. 20, 2023, as Appl. No. 18/390,711.
Application 18/390,711 is a continuation of application No. PCT/US2023/084621, filed on Dec. 18, 2023.
Claims priority of provisional application 63/605,856, filed on Dec. 4, 2023.
Claims priority of provisional application 63/533,271, filed on Aug. 17, 2023.
Claims priority of provisional application 63/496,566, filed on Apr. 17, 2023.
Claims priority of provisional application 63/477,317, filed on Dec. 27, 2022.
Prior Publication US 2024/0206815 A1, Jun. 27, 2024
Int. Cl. A61B 18/14 (2006.01); A61B 5/00 (2006.01); A61B 5/283 (2021.01); A61B 18/00 (2006.01); A61B 17/00 (2006.01); A61M 25/00 (2006.01)
CPC A61B 5/6859 (2013.01) [A61B 5/283 (2021.01); A61B 18/1492 (2013.01); A61B 2017/0003 (2013.01); A61B 2018/00279 (2013.01); A61B 2018/00369 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00839 (2013.01); A61M 25/0074 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of performing a medical procedure, comprising:
providing a medical device, the medical device including:
an elongate tether having a proximal end configured to be anchored to a proximal anchor point outside of a patient's anatomy and a distal end having a tissue anchor disposed thereon to penetrate through myocardial tissue to permit tension to be applied to and maintained along the elongate tether when the proximal end of the elongate tether is anchored to the proximal anchor point and the tissue anchor is anchored into myocardial tissue;
a first tubular catheter surrounding the elongate tether and being slidably displaceable along and with respect to the elongate tether when the elongate tether is under tension, the first tubular catheter having a proximal end, a distal end, and a cutter; and
a second tubular catheter surrounding the first tubular catheter and being slidably displaceable along and with respect to the first tubular catheter, the second tubular catheter having a proximal end and a distal end;
directing the medical device to a target location inside a patient's left ventricle proximate a native tissue obstruction in a left ventricular outflow tract of the patient;
placing the distal end of the second tubular catheter in a first location located proximally with respect to the tissue obstruction;
placing the distal end of the first tubular catheter in a second location located distally with respect to the tissue obstruction;
penetrating the myocardial tissue with the tissue anchor to secure the distal end of the elongate tether in place with respect to the myocardium;
orienting the cutter of the first tubular catheter toward the native tissue obstruction; and
reciprocating the first tubular catheter along the elongate tether to cause the cutter to cut into the native tissue.