EMBOLIC FILTER DEVICE AND RELATED SYSTEMS AND METHODS

摘要

An adjustable embolic filter module includes an adjustable lock assembly and an adjustable filter assembly with a filter support scaffold and filter member. The lock assembly and filter support scaffold are formed integrally from one piece of nickel-titanium tubing that is cut and retrained into a shape memory pattern. The lock assembly locks onto a guidewire, and the adjustable filter assembly self-expands when released from radial compression to filter blood at the location. A delivery system provides low profile delivery and release of the assembly for guidewire locking and filter deployment. A dynamic coupling is positioned between the lock and the filter, allowing limited range of motion between them upon movement of the locked guidewire. A system includes an actuated or sensed guidewire in combination with an adjustable filter module. A guidewire-lockable filter includes a needle coupled into the guidewire lumen for energy or material delivery to lock the filter to the guidewire.