Multiple access vein filter
First Claim
1. A vessel filter comprising a first filtering portion and a first anchoring portion spaced axially from the first filtering portion, a transverse dimension of the first filtering portion in an expanded configuration being less then a transverse dimension of the first anchoring portion in an expanded configuration, an end portion of the first anchoring portion spaced from the first filtering portion converging to a first converging section, and a second filtering portion and a second anchoring portion spaced axially from the second filtering portion, a transverse dimension of the second filtering portion being less than a transverse dimension of the second anchoring portion, an end portion of the second anchoring portion spaced from the first filtering portion converging to a second converging section, each of the first and second filtering portions having segments each forming at least one loop, end each of the first and second anchoring portions having segments each forming at least one loop, the first and second filtering portions being positioned closer to each other in an axial direction than the first and second anchoring portions and being configured to allow continuous blood flow therethrough while capturing clots, and the anchoring portions being formed on first and second opposite portions of the vessel filter with the first and second converging sections being adjacent opposing end portions of the filter, the anchoring portions extending integrally from the respective filtering portions and extending axially alone at least a portion of the length of the filter.
14 Assignments
0 Petitions
Accused Products
Abstract
A vessel filter comprising first and second filtering portions and first and second anchoring portions. A transverse dimension of the first filtering portion in an expanded configuration is less than a transverse dimension of the anchoring portion in an expanded configuration, and a transverse dimension of the second filtering portion is less than a transverse dimension of the second anchoring portion. The first and second filtering portions are positioned closer to each other than the first and second anchoring portions, and the anchoring portions are formed on first and second opposite portions of the vessel filter. Preferably a sleeve is positioned between the first and second filter portions.
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Citations
29 Claims
- 1. A vessel filter comprising a first filtering portion and a first anchoring portion spaced axially from the first filtering portion, a transverse dimension of the first filtering portion in an expanded configuration being less then a transverse dimension of the first anchoring portion in an expanded configuration, an end portion of the first anchoring portion spaced from the first filtering portion converging to a first converging section, and a second filtering portion and a second anchoring portion spaced axially from the second filtering portion, a transverse dimension of the second filtering portion being less than a transverse dimension of the second anchoring portion, an end portion of the second anchoring portion spaced from the first filtering portion converging to a second converging section, each of the first and second filtering portions having segments each forming at least one loop, end each of the first and second anchoring portions having segments each forming at least one loop, the first and second filtering portions being positioned closer to each other in an axial direction than the first and second anchoring portions and being configured to allow continuous blood flow therethrough while capturing clots, and the anchoring portions being formed on first and second opposite portions of the vessel filter with the first and second converging sections being adjacent opposing end portions of the filter, the anchoring portions extending integrally from the respective filtering portions and extending axially alone at least a portion of the length of the filter.
- 14. A surgical apparatus comprising a vessel filter having a first portion, a second portion and an intermediate portion between the first and second portions, the first portion increasing in diameter from the intermediate portion towards a first end, and the second portion increasing in diameter from the intermediate portion towards a second end, a region closer axially to the intermediate portion forming a filter portion, a first region further axially from the intermediate portion forming a first anchoring portion and a second region further axially from the intermediate portion forming a second anchoring portion to retain the filter within the vessel, and the filter being configured to allow continuous blood flow therethrough while capturing clots, the anchoring portion dimensioned to contact the vessel wall and spaced radially from a central axis of the apparatus, wherein regions of the first and second anchoring portion extend radially distally in a first direction and bend back to extend proximally in a second direction.
- 24. A surgical apparatus comprising a vessel filter having a first portion, a second portion and an intermediate portion between the first and second portions, the first portion increasing in diameter from the intermediate portion towards a first end, and the second portion increasing in diameter from the intermediate portion towards a second end, a region closer to the intermediate portion forming a filter portion, and a looped anchoring portion formed at the first end and second end and extending in an axial direction from the filter portion, an end region of each anchoring region which is spaced further axially from the filter portion converging to form a converging section spaced from the filter portion.
Specification