Vena cava filter formed from a sheet
First Claim
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1. A blood filter for use in a patient'"'"'s blood vessel having a vessel wall surrounding a vessel lumen, comprising:
- a) a longitudinally extending filter body including a proximal section extending a first fixed distance from a proximal terminal end of the longitudinal filter body to a first intermediate endpoint, said proximal section having a first cross-sectional area;
b) a distal section having a distal terminal end and a second cross-sectional area;
c) a joining section positioned between the proximal and distal sections and having a third cross-sectional area less than both the first and second cross-sectional areas;
d) said joining section spaced away from each of said terminal ends and extending a fixed second distance;
e) a first hub on said joining section that is slidable a fixed distance along a length of said joining section and in between said proximal and distal sections while in use in the blood vessel;
f) a plurality of appendages, each attached to said hub at an inner appendage end portion, each appendage having an outer appendage end portion providing unattached distal-most ends extending radially outward of said hub;
g) wherein said appendages are bendable in both a proximal and distal direction, thus enabling insertion of said filter body with hub and appendages using either a jugular access site or a femoral access site; and
h) wherein said filter body, said hub and said appendages are configured to occupy a vessel of a patient.
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Abstract
A filter formed from a sheet is described herein. In one aspect of the invention, a filter is formed from a sheet of material and, following removal of portions of the sheet, the filter is folded into a shape for insertion into a blood vessel. In another aspect of the invention, features for a filter are formed from a sheet of material and incorporated into the filter.
666 Citations
22 Claims
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1. A blood filter for use in a patient'"'"'s blood vessel having a vessel wall surrounding a vessel lumen, comprising:
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a) a longitudinally extending filter body including a proximal section extending a first fixed distance from a proximal terminal end of the longitudinal filter body to a first intermediate endpoint, said proximal section having a first cross-sectional area; b) a distal section having a distal terminal end and a second cross-sectional area; c) a joining section positioned between the proximal and distal sections and having a third cross-sectional area less than both the first and second cross-sectional areas; d) said joining section spaced away from each of said terminal ends and extending a fixed second distance; e) a first hub on said joining section that is slidable a fixed distance along a length of said joining section and in between said proximal and distal sections while in use in the blood vessel; f) a plurality of appendages, each attached to said hub at an inner appendage end portion, each appendage having an outer appendage end portion providing unattached distal-most ends extending radially outward of said hub; g) wherein said appendages are bendable in both a proximal and distal direction, thus enabling insertion of said filter body with hub and appendages using either a jugular access site or a femoral access site; and h) wherein said filter body, said hub and said appendages are configured to occupy a vessel of a patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A blood filter for use in a patient'"'"'s blood vessel having a vessel wall surrounding a vessel lumen, comprising:
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a) a longitudinally extending filter body having first and second filter body ends; b) a first stop member attached to and permanently positioned relative to the filter body and having a first diameter; c) a second stop member attached to and permanently positioned relative to the filter body, said second stop member spaced away from said first stop member and having a second diameter; d) a hub that is movable along said filter body a fixed distance in between said stop members, said hub spaced away from each said filter body end; e) a plurality of appendages, each having a proximal end joined to said hub and a free end spaced radially away from the hub, the hub including an opening configured for movement along a length of the longitudinal body between the first and second stop members while in use in the vessel; and f) each said appendage being bendable from a first position to a second curved position by curving in between the hub and the free end, wherein in said second curved position each appendage free end is generally parallel to said filter body.
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21. A blood filter for use in a patient'"'"'s blood vessel having a vessel wall surrounding a vessel lumen, comprising:
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a) a longitudinally extending filter body including and a proximal section extending from a proximal terminal end of the filter body to a first intermediate endpoint having a first cross-sectional area; b) a distal section having a distal terminal end and a second cross-sectional area; c) a joining section positioned between the proximal and distal sections and having a third cross-sectional area less than both the first and second cross-sectional areas; d) said joining section spaced away from each of said terminal ends; e) a first hub on said joining section that is slidable along a fixed length in between said proximal and distal sections while in use in the blood vessel; f) a plurality of appendages, each attached to said hub at an inner appendage end portion, each appendage having an outer appendage end portion unattached distal-most ends extending radially outward of said hub; g) wherein said appendages are bendable in both a proximal and distal direction, thus enabling insertion of said filter body with hub and appendages using either a jugular access site or a femoral access site; h) wherein said filter body, said hub and said appendages are configured to occupy a vessel of a patient; and i) a second hub spaced from the first hub and spaced from each terminal end, a second joining section spaced from the first joining section, said second hub slidably mounted a fixed distance on said second joining section, said second hub having a plurality of appendages.
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22. A blood filter for use in a patient'"'"'s blood vessel having a vessel wall surrounding a vessel lumen, comprising:
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a) a longitudinally extending filter body having first and second filter body ends; b) a first stop member attached to and permanently positioned relative to the filter body and having a first diameter; c) a second stop member attached to and permanently positioned relative to the filter body that is spaced away from said first stop member and having a second diameter; d) a hub that is movable along said filter body in between said stop members, said hub spaced away from each said filter body end; e) a plurality of appendages, each having a proximal end joined to said hub and a free end spaced radially away from the hub, the hub including an opening configured for movement along a length of the longitudinal body between the first and second stop members while in use in the vessel; and f) each said appendage being bendable from a first position to a second curved position by curving in between the hub and the free end, wherein in said second curved position each appendage free end is generally parallel to said filter body; and g) third and fourth stop members spaced away from said filter ends and spaced from said first and second stop members, a second hub movable along said filter body in between said third and fourth stop members, said second hub having a second plurality of appendages.
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Specification