Guidewire filter and methods of use
1 Assignment
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Accused Products
Abstract
A filter system for temporary placement of a filter in an artery or vein is disclosed. The filter system includes a guidewire that is first positioned across a lesion within a vessel. The guidewire may include a distal stop. A slideable filter is then advanced along the guidewire using an advancing mechanism, typically an elongate member slideable over the guidewire and contacting the filter. A capture sheath may be disposed about the filter during advancement. Once the filter is positioned downstream of the lesion, the capture sheath is withdrawn, allowing the filter to expand. Further distal advancement of the filter is prohibited by the stop. After expansion of the filter, the capture sheath and the advancing mechanism are withdrawn from the region of interest, and removed from the patient'"'"'s vessel. The filter may then be retrieved using a capture sheath or exchanged for a second filter after removing the first filter.
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Citations
52 Claims
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1-20. -20. (canceled)
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21. A medical device, comprising:
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a guidewire with an actuatable stop;
the actuatable stop actuatable between traversable and untraversable states;
a filter with proximal and distal ends, the filter disposed on the guidewire, wherein the filter proximal end cannot pass proximally over the actuatable stop when the actuatable stop is in the untraversable state and the filter proximal end can pass proximally over the actuatable stop when the actuatable stop is in the traversable state; and
an actuator that interacts with the actuatable stop to actuate the actuatable stop between the traversable and untraversable states. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A device for filtering emboli, comprising:
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a guidewire with a filter stop means;
an actuatable stop actuatable between traversable and untraversable states;
a filter with proximal and distal ends, the filter disposed on the guidewire, wherein the filter proximal end cannot pass proximally over the actuatable stop when the actuatable stop is in the untraversable state and the filter proximal end can pass proximally over the actuatable stop when the actuatable stop is in the traversable state; and
an actuating means that interacts with the actuatable stop to actuate the actuatable stop between the traversable and untraversable states. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A medical device, comprising:
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a guidewire with an actuatable stop;
the actuatable stop actuatable between traversable and untraversable states;
a slidable device with proximal and distal ends, the slidable device slidably disposed on the guidewire, wherein the slidable device proximal end cannot pass proximally over the actuatable stop when the actuatable stop is in the untraversable state and the slidable device proximal end can pass proximally over the actuatable stop when the actuatable stop is in the traversable state; and
an actuator that interacts with the actuatable stop to actuate the actuatable stop between the traversable and untraversable states. - View Dependent Claims (49)
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50. A method, comprising the steps of:
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providing a medical device comprising;
a guidewire with an actuatable stop, the actuatable stop actuatable between traversable and untraversable states;
a filter with proximal and distal ends, the filter disposed on the guidewire, wherein the filter proximal end cannot pass over the actuatable stop when the actuatable stop is in the untraversable state and the filter proximal end can pass over the actuatable stop when the actuatable stop is in the traversable state; and
an actuating means that interacts with the actuatable stop to actuate the actuatable stop between the traversable and untraversable states;
deploying the filter in a patient'"'"'s vasculature;
actuating the actuatable stop from the untraversable state to the traversable state; and
passing the proximal end of the filter over the actuatable stop. - View Dependent Claims (51, 52)
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Specification