Patent ID: 8500697
Filing Date: 2013-08-06
Classification: A61B,A61M

Abstract:
1. A system configured to perforate the intra-atrial septum comprising: a transseptal access system defining a lumen, the lumen having a first section with a first diameter, a second section with a second diameter smaller than the first diameter, and a transition step defined between the first and second sections; a transseptal guidewire configured to be inserted within the lumen of the transseptal access system having an elongated body and an end section biased in a curved configuration to define a proximal curve and a distal curve together forming a generally S-shaped curvature terminating at a sharp distal perforating tip; the S-shaped curvature of the end section thereby reducing contact between the perforating tip of the transseptal guidewire and the transition step of the transseptal access system as the perforating tip is advanced through the lumen from the first section to the second section of the lumen.