Inferior vena cava filter
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Accused Products
Abstract
The present invention relates to a vascular filter including a coiled wire formed of a shape memory material for implantation into a vessel. The vascular filter captures particulates within the blood flow in the vessel, without substantially interfering with the normal blood flow. Prior to implantation, the coiled wire is generally elongated and thereafter it reverts to a predetermined shape that is suitable for filtering the blood flow. The predetermined shape of the vascular filter includes a plurality of loops coaxially disposed about a longitudinal axis and has a conical portion and a cylindrical portion.
51 Citations
49 Claims
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1-23. -23. (canceled)
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24. A vascular filter comprising:
a plurality of shaped wire forms circumferentially disposed about a longitudinal axis and each lying in a plane along the longitudinal axis, each of the plurality of shaped wire forms having a curved section, and first and second ends, wherein the first end of each of wire forms are affixed together and the second ends of each of the wire forms are affixed together. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A vascular filter having first and second ends and a longitudinal central axis, the filter comprising:
a plurality of wire forms, each wire form having an initial end portion starting at the first end of the filter and extending in an axial direction substantially linearly therefrom, a central curved portion extending radially outwardly from the central axis and extending axially along the longitudinal central axis from the initial end portion to a maximum diameter section and then extending radially inwardly toward the central axis and extending axially the longitudinal central axis from the maximum diameter section, and a terminating end portion terminating at the second end of the filter and extending in an axial direction substantially linearly thereto. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
Specification