US 12,303,119 B2
Apparatus and methods to create and maintain an intra-atrial pressure relief opening
David S. Celermajer, Vaucluse (AU); Edward I. McNamara, Chelmsford, MA (US); Michael W. Sutherland, Groton, MA (US); and Hiroatsu Sugimoto, Cambridge, MA (US)
Assigned to CORVIA MEDICAL, INC., Tewksbury, MA (US)
Filed by Corvia Medical, Inc., Tewksbury, MA (US)
Filed on Feb. 24, 2023, as Appl. No. 18/174,372.
Application 13/905,638 is a division of application No. 13/370,913, filed on Feb. 10, 2012, granted, now 8,882,697, issued on Nov. 11, 2014.
Application 18/174,372 is a continuation of application No. 16/417,576, filed on May 20, 2019, granted, now 11,589,854.
Application 16/417,576 is a continuation of application No. 13/905,638, filed on May 30, 2013, granted, now 10,292,690, issued on May 21, 2019.
Claims priority of provisional application 61/441,546, filed on Feb. 10, 2011.
Prior Publication US 2024/0023948 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/00 (2006.01); A61B 6/12 (2006.01); A61B 6/50 (2024.01); A61B 8/08 (2006.01); A61B 17/02 (2006.01); A61B 17/22 (2006.01); A61B 17/32 (2006.01); A61B 17/3205 (2006.01); A61B 17/34 (2006.01); A61B 18/00 (2006.01); A61B 18/04 (2006.01); A61B 18/14 (2006.01); A61B 18/24 (2006.01); A61F 2/06 (2013.01); A61F 2/24 (2006.01); A61M 25/00 (2006.01); A61M 25/06 (2006.01); A61M 25/09 (2006.01); A61M 25/10 (2013.01); A61M 27/00 (2006.01); A61M 29/02 (2006.01); A61N 7/02 (2006.01)
CPC A61B 17/0057 (2013.01) [A61B 17/02 (2013.01); A61B 17/32 (2013.01); A61B 17/320016 (2013.01); A61B 17/32053 (2013.01); A61B 17/3478 (2013.01); A61B 18/1492 (2013.01); A61F 2/06 (2013.01); A61F 2/2412 (2013.01); A61F 2/2442 (2013.01); A61F 2/2475 (2013.01); A61M 25/0068 (2013.01); A61M 25/0662 (2013.01); A61M 25/1002 (2013.01); A61M 27/002 (2013.01); A61M 29/02 (2013.01); A61B 6/12 (2013.01); A61B 6/503 (2013.01); A61B 8/0841 (2013.01); A61B 8/0883 (2013.01); A61B 2017/00247 (2013.01); A61B 2017/00252 (2013.01); A61B 2017/00575 (2013.01); A61B 2017/00592 (2013.01); A61B 2017/00606 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/0237 (2013.01); A61B 2017/22044 (2013.01); A61B 2017/320004 (2013.01); A61B 2017/320008 (2013.01); A61B 17/32002 (2013.01); A61B 2017/320064 (2013.01); A61B 2017/3488 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/046 (2013.01); A61B 2018/1467 (2013.01); A61B 18/24 (2013.01); A61M 2025/0039 (2013.01); A61M 2025/0681 (2013.01); A61M 2025/09008 (2013.01); A61M 2025/105 (2013.01); A61M 2025/1086 (2013.01); A61M 2025/1088 (2013.01); A61N 7/022 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A system for normalizing elevated blood pressure in a heart chamber, the system comprising:
a penetrator with a sharpened tip for penetrating an atrial septum between a left atrium and a right atrium by creating an opening having a first diameter;
a dilation catheter configured to advance through the opening, wherein the dilation catheter has a conical distal tip and an elongated substantially tubular shaft proximal to the conical distal tip, and is configured to be advanced over the penetrator;
a treatment mechanism for transferring heat energy to tissue around the opening in order to ablate or otherwise damage tissue around the opening in order to slow or prevent natural healing of a second diameter opening, larger than the first diameter, in the atrial septum without implanting a stent or valve in the atrial septum; and
a tissue grasper comprising a plurality of retaining prongs, the plurality of retaining prongs extending proximally and radially outwardly from the tissue grasper, the plurality retaining prongs configured to engage tissue.