US 6,695,865 B2 · Embolic protection device

Abstract

An embolic protection device includes a catheter body having a central longitudinal lumen, a guidewire positioned within the central longitudinal lumen, and a graft member that is generally tubular in shape in an undeployed state and generally frustroconical in shape in a deployed state. A plurality of openings are formed in the graft member and a plurality of arm members interconnect a proximal end of the graft member with the catheter body. A distal end of the graft member is connected to the guidewire or the atraumatic tip. The graft member may be fabricated of superelastic materials, plastically deformable materials or self-expanding materials and the plurality of openings are capable of diametric expansion and reduction proportionate to the degree of diametric expansion and reduction of a corresponding transverse cross-sectional region of the graft member when in the deployed state to capture emboli or particulate matter and minimize extrusion of the captured material through the openings in the graft member when the graft member is collapsed.

Claims31

Dependent claims

An embolic protection device, comprising:

a first elongate member having a lumen;
a second elongate member extending through the lumen and being movable with respect to the first elongate member;
and
a graft member constructed from a metal having a characteristic that is at least one of a superelastic material, a plastically deformable material and an elastic material, the graft member having a proximal end portion connected to the first elongate member and a distal end portion connected to the second elongate member, and a plurality of openings extending through the graft member along a length thereof;
the graft member being expandable from an undeployed generally tubular state to a deployed generally frustroconical state upon relative movement between the first and second elongate members in a first direction, the openings decreasing in size from the proximal end toward the distal end when the graft member is in the deployed state to thereby capture and retain emboli and other particulate matter of different sizes.

2 more elements

An embolic protection device comprising:

a catheter body having a central longitudinal lumen;
a guidewire having an atraumatic tip positioned at a distal end thereof, the guidewire being coaxially positioned within the central longitudinal lumen of the catheter body;
and
a graft member movable between an undeployed state and a deployed state, the graft member being of a generally tubular shape in the undeployed state and of a generally frustroconical shape in the deployed state, the graft member comprising a plurality of openings extending along a longitudinal axis thereof, the openings decreasing in size from the proximal end toward the distal end when the graft member is in the deployed state, with a distal end of the graft member being connected to one of the guidewire and the atraumatic tip, the graft member being movable between the undeployed and deployed states upon relative movement between the catheter body and the guide wire, the graft member being constructed of a metal having a characteristic that is at least one of a superelastic material, a plastically deformable material and an elastic material such that each opening expands and reduces in size in proportion to an amount of radial expansion and reduction, respectively, of a corresponding transverse cross sectional region of the graft member with which the opening is associated, to thereby capture emboli and other particulate matter when the graft member is in the deployed state and minimize extrusion of the captured material through the openings in the graft member when the graft member is in the undeployed state.

1 more element

Dependencies are inferred from the claim text.

Embolic protection device

Life of this patent

Embolic protection device

Life of this patent

Abstract

Claims31