Patent ID: 6277139
Filing Date: 2001-08-21
Classification: A61B,A61F

Abstract:
An embolic material retrieval device adapted for use with a guide wire adapted to extend through and beyond a distal end of a catheter sheath and during catheter based procedures comprising:a discontinuous loop of memory shape material having an open loop shape when not radially restrained, said discontinuous loop defining a circumferentially closed, generally circular shape with an inboard protruding discontinuity adapted to enable generally radial collapse of said loop, said inboard protruding discontinuity forming at least one, open ended triangular segment;a lead line having a proximal end adapted to be attached to said guide wire and a distal end attached to said discontinuous loop;a substantially conical filter adapted to capture embolic material, an open conical end of said filter attached to said discontinuous loop and a conical end point adapted to be attached to said guide wire;whereby said discontinuous loop and the attached filter are adapted to be collapsed when proximally disposed in said catheter sheath and inboard the sheath's distal end and said discontinuous loop and the attached filter are adapted to be deployed in a substantially conical shape when distally disposed outboard said sheath's distal end.