2 results about "Left atrial pressure" patented technology

The present disclosure relates to a device assembly and a method for treating heart failure by normalizing elevated blood pressure in the left atrium of a heart of a mammal. Disclosed herein is a transcatheter interatrial septum excision device assembly configured to create a sized interatrial aperture between the right and left atria of a heart for the relief of elevated left atrial pressure. The device assembly comprises a delivery catheter, a tissue stabilizer attached to a first catheter having a central lumen and a penetrating tip that permits passage of a guidewire, and a cutter attached to a second catheter having a central lumen that permits passage of the first catheter. Alternative configurations comprise a (third) catheter having a central lumen that permits passage of the aforementioned components to and from the right atrium, a tissue retention mechanism and an optional coaxial alignment mechanism.

This document describes systems and methods for cardiac monitoring and treatment using left atrial pressure. In many ways, an implantable pressure sensor in the patient's left atrium records a pressure signal. This left atrial pressure allows the calculation of the atrioventricular ratio (AVR), which is clinically relevant and can be used to guide treatment or as part of an open- or closed-loop automated treatment system.