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US 7,678,130 B2Granted
Method and device for filtering body fluid
Assigneeev3 Inc.
InventorsRudy Mazzocchi, Timothy Claude, James Segermark
Life of this patent
Estimating the term…
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.
Claims41
A method of protecting a patient from embolization during a percutaneous procedure at a site of stenosis within a vessel, comprising:
- providing a guidewire having proximal and distal ends, a proximal and a distal region, an expandable filter associated with the distal region, and an elongate tubular member which covers the expandable filter and is slidable over the guidewire;
- providing a retrieval catheter having proximal and distal ends and a lumen sized to receive the guidewire;
- introducing the distal end of the guidewire into the patient's vessel with the elongate tubular member covering the expandable filter, and positioning the filter downstream of the stenosis, wherein the elongate tubular member and guidewire cross the stenosis;
- expanding the expandable filter;
- removing the elongate tubular member from the vessel;
- introducing a distal end of a treatment catheter into the patient's vessel;
- advancing the treatment catheter over the guidewire to the site of stenosis within the vessel;
- expanding the vessel at the site of stenosis;
- removing the treatment catheter from the vessel;
- after the treatment catheter has been removed from the vessel introducing the distal end of the retrieval catheter into the vessel;
- and
- advancing the retrieval catheter over the guidewire to retrieve the expandable filter, wherein embolic material is generated when the vessel is expanded and captured before the expandable filter is removed from the patient's vessel.
9 more elements
A method for filtering emboli from blood flowing through a body vessel during therapeutic treatment at a treatment site in the vessel comprising:
- providing a guidewire having distal and proximal ends and carrying a filter on a distal portion of the guidewire, the filter being expandable from a collapsed delivery configuration to an expanded deployed configuration;
- providing a retrieval catheter having distal and proximal ends and a lumen sized to receive the guidewire;
- introducing the guidewire into the vessel;
- advancing the guidewire through the vessel while the filter is in its collapsed delivery configuration;
- expanding the filter to its expanded deployed configuration at a location within the vessel distal to the treatment site;
- performing a therapeutic treatment at the treatment site;
- filtering emboli released into the blood during the therapeutic treatment with the filter;
- after the therapeutic treatment has been performed introducing the distal end of the retrieval catheter into the vessel;
- advancing the retrieval catheter over the guidewire to retrieve the filter;
- and
- removing the retrieval catheter and guidewire and filter from the vessel.
8 more elements
A method for capturing emboli from blood flowing through a body vessel during therapeutic treatment at a treatment site within the vessel, comprising:
- introducing the distal end of a guidewire into the vessel;
- advancing the guidewire through the vessel to position a distal end of the guidewire downstream of the treatment site;
- introducing the distal end of a treatment catheter into the vessel, the treatment catheter having a lumen sized to receive the guidewire;
- advancing the treatment catheter over the guidewire to position the treatment catheter at the treatment site within the vessel;
- performing a therapeutic treatment at the treatment site with the treatment catheter;
- capturing emboli released into the blood during the therapeutic treatment at a location between the treatment site and the distal end of the guidewire;
- removing the treatment catheter from the vessel while the captured emboli remain in the vessel;
- after the treatment catheter has been removed introducing the distal end of a retrieval catheter into the vessel;
- advancing the retrieval catheter over the guidewire to retrieve the captured emboli;
- and
- removing the retrieval catheter, guidewire, and captured emboli from the vessel.
8 more elements
Dependencies are inferred from the claim text.