EXPANDABLE IMPLANT DEVICES FOR FILTERING BLOOD FLOW FROM ATRIAL APPENDAGES

摘要

Implant devices for filtering blood flowing through the ostium of an atrial appendage have component structures one or more of which are expandable. Devices with component structures in their unexpanded state have a compact size suitable for intra-cutaneous delivery to an atrial appendage situs. The expandable component structures are expanded in situ to deploy the devices. A device may have sufficiently short axial length so that most or almost all of the device length may fit within the ostium region.

主权项

1. An expandable structure deployable within an ostium of an atrium comprising:
an expandable stent having a first end, a second end, a radially compact delivery configuration, a generally cylindrical expanded configuration defining a longitudinal axis in which the expandable stent has an expanded radial dimension greater than a radially compact dimension of the delivery configuration and an expanded length greater than the length of the ostium within which the expandable structure is to be deployed; the first end having a self-sealing opening formed by overlapping membrane flaps sized and adapted to cover the ostium.