Method and device for filtering body fluid
First Claim
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1. A method of protecting a patient from embolization during a percutaneous procedure at a treatment site within a vessel comprising:
- introducing a first elongate member into the vessel at a vessel access location, the first elongate member having an expandable filter carried on a distal portion thereof;
introducing a second elongate member into the vessel at the vessel access location, the second elongate member having an expandable treatment device carried on a distal portion thereof;
advancing the first elongate member through the vessel to position the expandable filter downstream of the treatment site;
advancing the second elongate member through the vessel to position the expandable treatment device within the treatment site;
expanding the expandable filter within the vessel;
expanding the treatment device radially outwardly at the treatment site, embolic particles released from the treatment site being prevented from flowing distally through the vessel by the expanded filter;
removing the second elongate member from the vessel;
after the second elongate member has been removed from the vessel, introducing a distal end of an elongate retrieval member into the vessel, the elongate retrieval member having a lumen sized to receive the first elongate member;
advancing the elongate retrieval member through the vessel over the first elongate member to retrieve the expandable filter; and
removing the elongate retrieval member, first elongate member and expandable filter from the vessel.
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Accused Products
Abstract
Medical devices for filtering fluids flowing through a lumen and a method of forming medical devices. The devices can be used in vascular channels, urinary tracts, biliary ducts and the like, and filter emboli and other debris generated at a treatment site.
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Citations
7 Claims
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1. A method of protecting a patient from embolization during a percutaneous procedure at a treatment site within a vessel comprising:
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introducing a first elongate member into the vessel at a vessel access location, the first elongate member having an expandable filter carried on a distal portion thereof; introducing a second elongate member into the vessel at the vessel access location, the second elongate member having an expandable treatment device carried on a distal portion thereof; advancing the first elongate member through the vessel to position the expandable filter downstream of the treatment site; advancing the second elongate member through the vessel to position the expandable treatment device within the treatment site; expanding the expandable filter within the vessel; expanding the treatment device radially outwardly at the treatment site, embolic particles released from the treatment site being prevented from flowing distally through the vessel by the expanded filter; removing the second elongate member from the vessel; after the second elongate member has been removed from the vessel, introducing a distal end of an elongate retrieval member into the vessel, the elongate retrieval member having a lumen sized to receive the first elongate member; advancing the elongate retrieval member through the vessel over the first elongate member to retrieve the expandable filter; and removing the elongate retrieval member, first elongate member and expandable filter from the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification