Articulating guide wire for embolic protection and methods of use
First Claim
1. An articulating guidewire, comprising:
- an elongated core wire having a longitudinal axis, a proximal end and a distal end;
an actuatable stop disposed at the distal end of said core wire, said actuatable stop moveable between a collapsed position and an expanded position the stop having a first diameter in the expanded position;
an actuator positioned adjacent the stop, said actuator moveable between a first position and a second position to move the stop between the collapsed position and the expanded position; and
a filter slidably disposed on the core wire proximally of said actuatable stop the filter having an expanded position with a second diameter, the second diameter being larger than the first diameter, allowing fluids that flow through the filter to flow around the stop.
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0 Petitions
Accused Products
Abstract
An intravascular guidewire having an articulating distal section for improved maneuverability beyond a lesion or other protrusion within a body lumen. An elongated core wire having an actuatable stop disposed thereon is adapted to have a reduced profile in a first position, and an enlarged profile in a second position. The actuatable stop can be adapted to expand by any number of means, including a spring coil, a polymeric tube or a mesh sleeve. In one particular embodiment, the actuatable stop comprises a distal section of a tubular member having a plurality of circumferentially disposed openings adapted to permit a plurality of struts disposed therebetween to expand in an outward direction when compressed axially.
222 Citations
29 Claims
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1. An articulating guidewire, comprising:
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an elongated core wire having a longitudinal axis, a proximal end and a distal end; an actuatable stop disposed at the distal end of said core wire, said actuatable stop moveable between a collapsed position and an expanded position the stop having a first diameter in the expanded position; an actuator positioned adjacent the stop, said actuator moveable between a first position and a second position to move the stop between the collapsed position and the expanded position; and a filter slidably disposed on the core wire proximally of said actuatable stop the filter having an expanded position with a second diameter, the second diameter being larger than the first diameter, allowing fluids that flow through the filter to flow around the stop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An articulating guidewire, comprising:
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an elongated core wire having a longitudinal axis, a proximal end and a distal end; an actuatable stop disposed at the distal end of said core wire, said actuatable stop moveable between a collapsed position and an expanded position; an actuator disposable about the core wire, said actuator having a proximal end and a distal end; and a filter slidably disposed on the core wire proximally of said actuatable stop. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for placing an articulating guidewire in the vasculature, comprising the steps of:
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providing an articulating guidewire comprising an elongated core wire having a longitudinal axis, a proximal end and a distal end;
an actuatable stop disposed at the distal end of the core wire, and an actuator positioned adjacent the actuatable stop, said actuator moveable between first and second positions, wherein moving the actuator between the first and second positions causes the actuatable stop to move between a collapsed position and an expanded position, and wherein the actuator has a first diameter in the expanded position;inserting the guidewire into the lumen of a blood vessel; positioning a distal portion of the guidewire beyond a lesion or other protrusion within the body; actuating the actuatable stop from the collapsed position to the expanded position; and advancing a filter on the guidewire to the stop, the filter having an expanded position with a second diameter, the second diameter being larger than the first diameter allowing fluids that flow through the filter to flow around the stop. - View Dependent Claims (26)
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27. A method for placing an articulating guidewire in the vasculature, comprising the steps of:
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providing an articulating guidewire comprising an elongated core wire having a longitudinal axis, a proximal end and a distal end;
an actuatable stop disposed at the distal end of the core wire, said actuatable stop moveable between a collapsed position and an expanded position; and
an actuator moveable about the core wire, said actuator having a proximal end and a distal end;inserting the guidewire into the lumen of a blood vessel; positioning a distal portion of the guidewire beyond a lesion or other protrusion within the body; actuating the stop from the collapsed position to the expanded position; and advancing a filter on the guidewire. - View Dependent Claims (28, 29)
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Specification