Patent ID: 6692513
Filing Date: 2004-02-17
Classification: A61F

Abstract:
Apparatus for filtering and entrapping debris in the vascular system of a patient, said apparatus comprising:a filter device adapted to allow blood flow therethrough and to restrict passage of debris therethrough, said filter device having, a proximal side and a distal side, said filter device being adapted to capture debris carried in a first direction of blood flow from the proximal side to the distal side thereof on the proximal side of said filter device; an entrapment device having a proximal side and a distal side, said entrapment device comprising flap means on the distal side thereof adapted to open to allow passage of debris and blood therethrough in the first direction of blood flow from the proximal side to the distal side of said entrapment device, said flap means being operable to close to prevent debris passage from the distal side to the proximal side of said entrapment device in a second direction opposite to the first direction, said filter device and said entrapment device forming a chamber therebetween; and said apparatus being deployable within the vascular system; wherein said entrapment device allows blood and debris carried therein to flow therethrough in the first direction of blood flow and said filter device allows blood to flow therethrough in the first direction of blood flow, and said entrapment device flap means prevent debris from flowing back therethrough in the second direction of blood flow opposite to the first direction of blood flow such that the debris is trapped within the chamber for removal from the vascular system of the patient.