Patent ID: 8951223
Filing Date: 2015-02-10
Classification: A61B,A61F,A61M

Abstract:
1. An expandable device adapted for percutaneous delivery into a membrane of a patient's heart, the device comprising: an anchoring section comprising interconnected first and second anchors adapted to contact, respectively, first and second sides of the membrane; a coil comprising a plurality of winds disposed side by side and extending along a longitudinal axis to form a tubular body having first and second ends, the first end being attached to the anchoring section, the coil being adapted to permit blood to flow across the membrane at a first flow rate, the coil also having a ratcheting mechanism comprising a plurality of protrusions and a plurality of complementary recesses for receiving the protrusions configured so that when the second end is turned about the longitudinal axis to tighten the coil, the ratcheting mechanism releasably locks the tightening of the coil; wherein turning the second end to tighten the coil adapts the coil to conduct blood across the membrane at a second flow rate that is different from the first flow rate.