Removable embolus blood clot filter
First Claim
1. A blood clot filter having a central longitudinal axis and comprising a plurality of spaced, elongate arms having first and second ends, said first ends of said elongate arms being connected together at said central longitudinal axis, said elongate arms curving outwardly from said central longitudinal axis in a first direction and reversing direction to a second opposite direction to space said second ends of said elongate arms outwardly around said central longitudinal axis, anda plurality of spaced elongate legs having first and second ends, said first ends of said elongate legs being connected together at said central longitudinal axis, said elongate legs angling outwardly away from said central longitudinal axis in said first direction.
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Accused Products
Abstract
A blood clot filter which is collapsible toward a central longitudinal axis into a collapsed configuration for insertion into a blood vessel and which is radially expandable outwardly from the longitudinal axis to an expanded configuration for contact with the inner wall of the blood vessel at two longitudinally spaced locations. A first plurality of spaced, elongate arms, in the expanded configuration of the filter, curve outwardly away from the longitudinal axis toward the trailing end of the filter to form a first filter basket. These arms prevent movement of the filter in a first longitudinal direction. A second plurality of spaced elongate legs angle outwardly away from the longitudinal axis toward the leading edge of the filter in the expanded configuration thereof. These second legs form a second filter basket opening toward the leading end and prevent longitudinal movement of the filter in a second direction opposite to the first direction.
626 Citations
20 Claims
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1. A blood clot filter having a central longitudinal axis and comprising a plurality of spaced, elongate arms having first and second ends, said first ends of said elongate arms being connected together at said central longitudinal axis, said elongate arms curving outwardly from said central longitudinal axis in a first direction and reversing direction to a second opposite direction to space said second ends of said elongate arms outwardly around said central longitudinal axis, and
a plurality of spaced elongate legs having first and second ends, said first ends of said elongate legs being connected together at said central longitudinal axis, said elongate legs angling outwardly away from said central longitudinal axis in said first direction.
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16. A blood clot filter having a central longitudinal axis which is collapsible into a collapsed configuration toward said longitudinal axis for insertion into a blood vessel and which is radially expansible outwardly from said longitudinal axis to an expanded configuration for contact with an inner wall of said blood vessel at two longitudinally spaced locations, said blood clot filter having leading and trailing ends and comprising:
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a first plurality of spaced wires which, in the expanded configuration of said filter curve outwardly away from said longitudinal axis toward the trailing end of said blood clot filter to form a first filter basket opening toward said trailing end, and a second plurality of spaced wires which, in the expanded configuration of said filter angle outwardly away from said longitudinal axis toward the leading end of said blood clot filter to form a second filter basket opening toward said leading end. - View Dependent Claims (17, 18, 19, 20)
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Specification