Patent ID: 8882697
Filing Date: 2014-11-11
Classification: A61B,A61F,A61M,A61N

Abstract:
1. A method for normalizing elevated blood pressure in a heart chamber, the method comprising: penetrating an atrial septum between a right atrium and a left atrium of a heart to create an opening in the atrial septum; increasing the opening to a larger size to create an intra-atrial pressure relief opening; after the increasing step, treating tissue near the intra-atrial pressure relief opening to slow a natural healing process of the tissue to maintain patency of the intra-atrial pressure relief opening without implanting a stent or valve in the intra-atrial pressure relief opening; and permitting blood to flow from the left atrium to the right atrium through the intra-atrial pressure relief opening to reduce left atrial pressure.