Vein filter
First Claim
1. A vessel filter comprising an integral member having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel, the first region having a filter portion having a converging region to direct particles toward the center of the filter, the first region including a plurality of spaced apart elongated struts and a plurality of connecting struts extending at an angle from the elongated struts, adjacent connecting struts being joined to form closed geometric shapes only in the first region and at a proximal portion of the first region, the closed geometric shapes forming a ring about the filter and the filter devoid of closed geometric shapes proximal to the ring and distal to the ring, the second region forming a mounting region being flared to progressively increase in diameter in the second region to minimize contact with the vessel wall, the second region flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the filter portion, the second region including a vessel engaging portion at the second end portion, the second region being devoid of connecting struts, wherein the connecting struts are formed by a division of the elongated struts in the first region into two substantially equal connecting struts, the connecting struts having a width less than a width of the elongated struts along their length, the connecting struts joining to transition into elongated struts extending through the second region.
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Accused Products
Abstract
A vessel filter comprising a first region and a second region wherein the filter is movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel. A first region has a filter portion having a converging region to direct particles toward the center of the filter and the second region is flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the first end portion. The second region includes a vessel engaging portion at the second end portion. The first region includes a plurality of spaced apart elongated struts with adjacent struts being joined.
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Citations
13 Claims
- 1. A vessel filter comprising an integral member having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel, the first region having a filter portion having a converging region to direct particles toward the center of the filter, the first region including a plurality of spaced apart elongated struts and a plurality of connecting struts extending at an angle from the elongated struts, adjacent connecting struts being joined to form closed geometric shapes only in the first region and at a proximal portion of the first region, the closed geometric shapes forming a ring about the filter and the filter devoid of closed geometric shapes proximal to the ring and distal to the ring, the second region forming a mounting region being flared to progressively increase in diameter in the second region to minimize contact with the vessel wall, the second region flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the filter portion, the second region including a vessel engaging portion at the second end portion, the second region being devoid of connecting struts, wherein the connecting struts are formed by a division of the elongated struts in the first region into two substantially equal connecting struts, the connecting struts having a width less than a width of the elongated struts along their length, the connecting struts joining to transition into elongated struts extending through the second region.
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12. A vessel filter comprising an integral member having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel, the first region having a filter portion having a converging region to direct particles toward the center of the filter, the first region including a plurality of spaced apart elongated struts and a plurality of connecting struts extending at an angle from the elongated struts, adjacent connecting struts being joined to form closed geometric shapes only in the first region, the second region forming a mounting region being flared to progressively increase in diameter in the second region to minimize contact with the vessel wall, to have a transverse dimension in the expanded position increasing toward a second end portion opposite the filter portion, the second region including a vessel engaging portion at the second end portion, the second region being devoid of connecting struts, wherein in the collapsed position of the filter, the filter has a plurality of elongated struts extending from a proximal tubular region to a distal hook region, and a single elongated slot is formed in each of the elongated struts.
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13. A vessel filter comprising an integral member having a first region and a second region, the filter movable between a collapsed position for delivery to the vessel and an expanded position for placement within the vessel, the first region having a filter portion having a converging region to direct particles toward the center of the filter, the first region including a plurality of spaced apart elongated struts and a plurality of connecting struts extending at an angle from the elongated struts, adjacent connecting struts being joined to form closed geometric shapes only in the first region and at a proximal portion of the first region, the closed geometric shapes forming a ring about the filter and the filter devoid of closed geometric shapes proximal to the ring and distal to the ring, the second region forming a mounting region being flared to progressively increase in diameter in the second region to minimize contact with the vessel wall, the second region flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the filter portion, the second region including a vessel engaging portion at the second end portion, the second region being devoid of connecting struts, wherein in the collapsed position of the filter, the filter has a plurality of elongated struts extending from a proximal tubular region to a distal hook region, and a single elongated slot is formed in each of the elongated struts.
Specification