US 12,408,907 B1
Method of reducing left atrial pressure
Michael G Valdez, Riverside, CA (US); Cristobal R. Hernandez, Santa Ana, CA (US); Eric Jason Noda, Rancho Santa Margarita, CA (US); Hien T. Nguyen, Aliso Viejo, CA (US); Trizzie Trang Dang, Santa Ana, CA (US); Lillian Grace Myers, Prairie Village, KS (US); Linda Thai, Mission Viejo, CA (US); Daniel James Murray, Orange, CA (US); and Don Huy Tran, Westminster, CA (US)
Assigned to EDWARDS LIFESCIENCES CORPORATION, Irvine, CA (US)
Filed by EDWARDS LIFESCIENCES CORPORATION, Irvine, CA (US)
Filed on May 22, 2025, as Appl. No. 19/216,510.
Application 19/216,510 is a continuation of application No. 17/744,127, filed on May 13, 2022.
Application 17/744,127 is a continuation of application No. PCT/US2020/059304, filed on Nov. 6, 2020.
Claims priority of provisional application 62/935,214, filed on Nov. 14, 2019.
Int. Cl. A61B 17/00 (2006.01); A61B 17/34 (2006.01); A61M 27/00 (2006.01)
CPC A61B 17/00234 (2013.01) [A61B 17/3468 (2013.01); A61B 17/3478 (2013.01); A61M 27/002 (2013.01); A61B 2017/00247 (2013.01); A61B 2017/00292 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of forming an opening between a coronary sinus and a left atrium, the method comprising:
providing a first delivery catheter and a second delivery catheter pre-loaded within the first delivery catheter, and a medical device carried by a distal portion of the second delivery catheter;
advancing the first delivery catheter, the second delivery catheter, and the medical device together from a right atrium of a heart and into the coronary sinus;
positioning a side outlet opening of a distal portion of the first delivery catheter within the coronary sinus and orienting the side outlet opening toward the left atrium;
expanding an expandable anchor coupled to the first delivery catheter to contact an inner surface of the coronary sinus for stabilizing the first delivery catheter within the coronary sinus;
advancing the distal portion of the second delivery catheter outwardly through the side outlet opening toward a target wall portion of the coronary sinus;
puncturing the target wall portion with a puncture component associated with a distal end of the second delivery catheter to form the opening between the coronary sinus and left atrium while the medical device carried by the second delivery catheter is positioned in the coronary sinus; and
positioning the medical device within the opening between the coronary sinus and the left atrium.