Intravascular filtering devices and methods
First Claim
Patent Images
1. A thrombus filter for placement within a blood vessel lumen defined by a blood vessel wall comprising:
- a wall engaging portion comprised of a plurality of wall engaging strands;
a filtering portion comprised of a plurality of filtering strands;
each filtering strand having ajoined end and a free end;
the joined end of each filtering strand being fixed to the thrombus filter;
the free ends of the filtering strands converging at an apex of the thrombus filter; and
a means for retaining disposed about the free ends of the filtering strands.
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Accused Products
Abstract
A thrombus filter configured for placement within a blood vessel lumen defined by a blood vessel wall. Methods and devices for selectively reshaping the thrombus filter so that the lumen of the blood vessel is substantially unobstructed. The thrombus filter includes a generally cylindrical anchoring portion, and a generally conical filtering portion terminating at an apex.
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Citations
20 Claims
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1. A thrombus filter for placement within a blood vessel lumen defined by a blood vessel wall comprising:
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a wall engaging portion comprised of a plurality of wall engaging strands;
a filtering portion comprised of a plurality of filtering strands;
each filtering strand having ajoined end and a free end;
the joined end of each filtering strand being fixed to the thrombus filter;
the free ends of the filtering strands converging at an apex of the thrombus filter; and
a means for retaining disposed about the free ends of the filtering strands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of selectably re-shaping a thrombus filter disposed within a blood vessel lumen, defined by a blood vessel wall, the method comprising the steps of:
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providing a thrombus filter having a wall engaging portion comprising a plurality of wall engaging strands and a filtering portion comprising a plurality of filtering strands;
each filtering strand having a joined end and a free end;
the joined end of each filtering strand being fixed to the thrombus filter;
the free ends of the filtering strands converging at an apex of the thrombus filter; and
a means for retaining disposed about the free ends of the filtering strands;
positioning an elongated force transferring member so that a distal end thereof is proximate the means for retaining of the thrombus filter;
coupling the elongated force transferring member to the means for retaining; and
removing the means for retaining from the thrombus filter.
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14. A thrombus filter for placement within a blood vessel lumen defined by a blood vessel wall comprising:
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a wall engaging portion comprising a plurality of wall engaging strands;
a filtering portion comprising a plurality of filtering strands;
each filtering strand having ajoined end and a free end;
the joined end of each filtering strand being fixed to the thrombus filter; and
the free ends of the filtering strands converging at an apex of the thrombus filter. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method of selectably re-shaping a thrombus filter disposed within a blood vessel lumen, defined by a blood vessel wall, the method comprising the steps of:
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providing a thrombus filter having a wall engaging portion comprising a plurality of wall engaging strands and a filtering portion comprising a plurality of filtering strands;
each filtering strand having a joined end and a free end;
the joined end of each filtering strand being fixed to the thrombus filter;
the free ends of the filtering strands converging at an apex of the thrombus filter;
providing an elongate catheter having a means for expansion disposed proximate a distal end thereof;
positioning the elongate catheter within the blood vessel lumen so that the distal end thereof is proximate the filtering portion of the thrombus filter;
expanding the means for expansion of the elongate catheter;
wherein the free ends of the filtering strands are urged toward the blood vessel walls.
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Specification