Self-opening filter with wire actuation
First Claim
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1. A distal protection device comprising:
- a guidewire having a proximal end and a distal end;
a filter disposed on the guidewire, the filter including filtering material and an expandable hollow coil;
wherein the filtering material defines a proximally facing cavity having a mouth and wherein the coil circumscribes the mouth; and
a wire attached to a distal end of the coil and at least partially disposed within the coil;
wherein the filter is actuatable from a closed position to an open position by reducing tension on the wire.
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Abstract
A distal protection device that may include a guidewire having a proximal end and a distal end, a filter disposed on the guidewire, the filter including filtering material and an expandable hollow coil, and a wire at least partially disposed within the coil, wherein the filter is actuatable from a closed position to an open position by reducing tension on the wire and methods of use thereof.
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Citations
24 Claims
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1. A distal protection device comprising:
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a guidewire having a proximal end and a distal end; a filter disposed on the guidewire, the filter including filtering material and an expandable hollow coil;
wherein the filtering material defines a proximally facing cavity having a mouth and wherein the coil circumscribes the mouth; anda wire attached to a distal end of the coil and at least partially disposed within the coil; wherein the filter is actuatable from a closed position to an open position by reducing tension on the wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of opening a distal protection filter comprising the steps of
providing a filter disposed on a guidewire, the filter having filtering material attached to a hollow coil; - wherein filtering material defines a proximally facing cavity having a mouth and wherein the coil circumscribes the mouth;
providing a wire in tension attached to a distal end of the coil and disposed partially in the coil, the wire tension keeping the coil in a compacted configuration; and releasing the tension in the wire to allow the coil to expand to an open configuration and thereby open the filter. - View Dependent Claims (19)
- wherein filtering material defines a proximally facing cavity having a mouth and wherein the coil circumscribes the mouth;
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20. A distal protection device comprising
an elongate member having a proximal end and a distal end; -
a filter disposed on the elongate member, the filter including a filtering material connected to a hollow expandable wherein the filtering material defines a proximally facing cavity having a mouth and wherein the coil circumscribes the mouth; and
, the coil having a first end and a second end and defining a lumen therebetween; anda wire threaded through the lumen of the coil, the wire being attached to the first end and extending out from the second end; and
wherein the filter is actuatable from a collapsed configuration to an expanded configuration by reducing tension on the wire. - View Dependent Claims (21, 22, 23, 24)
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Specification