Self furling umbrella frame for carotid filter
First Claim
Patent Images
1. A system for capturing embolic or foreign material in a vessel, comprising:
- an elongate tubular member having a proximal end and a distal end;
an elongate wire having a proximal end and a distal end, the elongate wire being positionable within the elongate tubular member;
a capturing structure operatively connected to the elongate wire, having an expanded condition and a contracted position, the capturing structure further having an inner surface and an outer surface forming a parachute-like structure in the expanded condition; and
a plurality of inner struts attached to the capturing structure inner surface and a plurality of outer struts attached to the capturing structure outer surface, the capture device assuming a self folding position in the contracted condition as the outer struts rotate with respect to the inner struts.
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Abstract
A capture device for removal of clots and foreign bodies from vasculature or filtering of particulate from blood flow. The parachute-like capture device is connected to an elongate wire located within a longitudinally elongated tubular member. The capture device is radially expandable and is refolded to a reduced profile during contraction.
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Citations
24 Claims
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1. A system for capturing embolic or foreign material in a vessel, comprising:
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an elongate tubular member having a proximal end and a distal end;
an elongate wire having a proximal end and a distal end, the elongate wire being positionable within the elongate tubular member;
a capturing structure operatively connected to the elongate wire, having an expanded condition and a contracted position, the capturing structure further having an inner surface and an outer surface forming a parachute-like structure in the expanded condition; and
a plurality of inner struts attached to the capturing structure inner surface and a plurality of outer struts attached to the capturing structure outer surface, the capture device assuming a self folding position in the contracted condition as the outer struts rotate with respect to the inner struts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for capturing embolic or foreign material in a vessel, comprising:
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an elongate tubular member having a proximal end and a distal end;
an elongate wire having a proximal end and a distal end, the elongate wire being positionable within the elongate tubular member;
a capturing structure operatively connected to the elongate wire having an expanded condition and a contracted position, the capturing structure forming a parachute-like structure in the expanded condition;
a plurality of first struts having proximal ends and distal ends, the distal ends being attached to the capturing structure and the proximal ends being attached to the elongated wire; and
a plurality of second struts having proximal ends and distal ends, the distal ends being attached to the capturing structure and the proximal ends being attached to the elongated wire, the proximal ends including a partial helix configuration. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification