David Holmes;Gregg S Sutton;Jeffrey Welch;Robert G Hauser;Robert Schwartz;Thomas E Borillo;Robert A VanTassel
发明人:
Robert A VanTassel,Robert G Hauser,Robert Schwartz,David Holmes,Gregg S Sutton,Thomas E Borillo,Jeffrey Welch
申请号：
US10656647
公开号：
US08685055B2
申请日:
2003.09.04
申请国别(地区):
US
年份:
2014
代理人:
摘要：
Apparatus for permanent placement across an ostium of a left atrial appendage in a patient, which includes a filtering membrane configured to extend across the ostium of the left atrial appendage. The filtering membrane has a permeable structure which allows blood to flow through but substantially inhibits thrombus from passing therethrough. The apparatus also includes a support structure attached to the filtering membrane which retains the filtering membrane in position across the ostium of the left atrial appendage by permanently engaging a portion of the interior wall of the left atrial appendage. The support structure may be radially expandable from a first configuration to a second configuration which engages the ostium or the interior wall of the left atrial appendage. The filtering membrane may define an opening therethrough that is configured to expand from a first size which inhibits the passage of thrombus therethrough to a second size which allows an interventional device, e.g., an expansion balloon, to pass therethrough, and wherein the opening is resiliently biased towards the first size.
