Intravascular filter retrieval device and method
AssigneeSciMed Life Systems, Inc.
InventorVladimir Tsukernik
Life of this patent
Estimating the term…
Abstract
A thrombus filter configured for placement in within a blood vessel lumen defined by a blood vessel wall. Methods and devices for selectively removing the thrombus filter when the presence of a filter in the vascular system is no longer desired. The thrombus filter includes a first strand formation, a second strand formation, and a joined portion.
Claims24
A thrombus filter element for placement within a blood vessel lumen defined by a blood vessel wall comprising:
- a plurality of strands each having a joined portion and a free end;
- the joined portion of each strand being fixed to a joined portion of the thrombus filter;
- and
- a sliding member disposed about the joined portion of the thrombus filter.
A thrombus filter element for placement within a blood vessel lumen defined by a blood vessel wall comprising:
- a plurality of strands having a first grouping and a second grouping, wherein the first grouping and the second grouping radiate in opposing directions from a joined portion of the thrombus filter, each strand having a free end and a joined portion;
- the joined portion of each strand being fixed to a joined portion of the thrombus filter;
- and
- a sliding member disposed about the joined portion of the thrombus filter.
A method of selectively removing a thrombus filter from a blood vessel lumen comprising the steps of:
- providing a thrombus filter disposed in a blood vessel lumen;
- the thrombus filter having a plurality of strands having a first grouping and a second grouping, wherein the first grouping and the second grouping radiate in generally opposing directions, each strand having a free end and a joined portion;
- the joined portion of each strand being fixed to a joined portion of the thrombus filter;
- and
- a sliding member disposed about the joined portions of the strands;
- providing a retrieval catheter having a distal end, a proximal end, and a lumen extending therebetween;
- providing a means for pulling disposed proximate the distal end of the retrieval catheter;
- advancing the retrieval catheter through the blood vessel lumen until the distal end of the catheter is proximate the thrombus filter;
- joining the means for pulling to the sliding member of the thrombus filter;
- urging the sliding member toward the free ends of the first grouping of the strands;
- urging the thrombus filter inside the lumen of the retrieval catheter;
- and
- withdrawing the retrieval catheter from the blood vessel lumen.
A method of selectively removing a thrombus filter from a blood vessel lumen comprising the steps of:
- providing a thrombus filter disposed in a blood vessel lumen;
- the thrombus filter having a plurality of strands having a first grouping and a second grouping, wherein the first grouping and the second grouping radiate in generally opposing directions, each strand having a free end and a joined portion;
- the joined portion of each strand being fixed to a joined portion of the thrombus filter;
- providing a retrieval catheter having a distal end, a proximal end, and a lumen extending therebetween;
- providing a plurality of struts, each strut having a proximal end, a distal end;
- providing a plurality of flanges, each flange fixed to the distal end of one of the plurality of struts;
- advancing the retrieval catheter through the blood vessel lumen until the distal end of the catheter is proximate the thrombus filter;
- advancing the struts longitudinally through the blood vessel until the flanges are disposed proximate the joined portions of the strands of the thrombus filter;
- closing the flanges around the joined portion of the thrombus filter;
- urging the flanges toward the free ends of the first grouping of the strands;
- urging the thrombus filter inside the lumen of the retrieval catheter;
- and
- withdrawing the retrieval catheter from the blood vessel lumen.
Dependencies are inferred from the claim text.