Method and device for filtering body fluid
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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.
220 Citations
42 Claims
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1-25. -25. (Canceled).
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26. A method for delivering an expandable filter to a desired location in a vessel comprising:
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providing a first guidewire having proximal and distal ends;
providing a second guidewire having proximal and distal ends, a distal region, and an expandable filter carried on the distal region;
providing an introduction catheter having proximal and distal ends and a lumen sized to accept the first guidewire and sized to accept the second guidewire and expandable filter;
introducing the first guidewire into the vessel;
advancing the introduction catheter through the vessel over the first guidewire with the first guidewire received in the lumen of the introduction catheter;
introducing the second guidewire and expandable filter into the lumen of the introduction catheter;
advancing the second guidewire and expandable filter through the vessel in the lumen of the introduction catheter; and
manipulating the second guidewire and introduction catheter so that the expandable filter extends from the distal end of the introduction catheter at the desired location in the vessel. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A method for delivering an expandable filter to a desired location in a vessel comprising:
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providing a first guidewire having proximal and distal ends;
providing a second guidewire having proximal and distal ends, a distal region, and an expandable filter carried on the distal region;
providing an introduction catheter having proximal and distal ends and a lumen sized to accept the first guidewire and sized to accept the second guidewire and expandable filter;
introducing the first guidewire into the lumen of the introduction catheter;
advancing the first guidewire and the introduction catheter together through the vessel;
introducing the second guidewire and expandable filter into the lumen of the introduction catheter;
advancing the second guidewire and expandable filter through the vessel in the lumen of the introduction catheter; and
manipulating the second guidewire and introduction catheter so that the expandable filter extends from the distal end of the introduction catheter at the desired location in the vessel. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A method for delivering an expandable filter to a desired location in a vessel comprising:
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providing a guidewire having proximal and distal ends, a distal region, and an expandable filter carried on the distal region;
providing an introduction catheter having proximal and distal ends and a lumen sized to accept the guidewire and expandable filter;
advancing the introduction catheter to a region of interest in the vessel;
introducing the guidewire and expandable filter into the lumen of the introduction catheter;
advancing the guidewire and expandable filter through the vessel in the lumen of the introduction catheter; and
manipulating the guidewire and introduction catheter so that the expandable filter extends from the distal end of the introduction catheter at the desired location in the vessel. - View Dependent Claims (39, 40, 41, 42)
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Specification