Deflectable intravascular filter
First Claim
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1. An intravascular filter, comprising:
- a proximal sheath;
a proximal shaft extending through the proximal sheath;
an expandable proximal filter carried by the proximal shaft and collapsed within the proximal sheath;
an articulable distal sheath extending through the proximal shaft, the articulable distal sheath having an articulation zone comprising a pull wire, wherein proximal retraction of the pull wire causes the articulation zone to articulate;
an elongate, flexible tubular body, having a proximal end and a distal end, and a guidewire lumen extending therethrough, the elongate flexible tubular body extending through the articulable sheath;
a filter frame comprising a loop and a strut;
the loop residing in a plane that intersects the tubular body at a non normal angle, and the strut connecting the loop to the tubular body;
a filter membrane extending from the loop in a distal direction to a point of attachment to the tubular body; and
a flex zone on the tubular body positioned proximal to the filter frame and distal to the expandable proximal filter, the flex zone having a different flexibility than proximal and distal adjacent portions of the tubular body and wherein the guidewire lumen extends through the flex zone.
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Abstract
Single filter and multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient'"'"'s vasculature. In some embodiments a filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.
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Citations
10 Claims
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1. An intravascular filter, comprising:
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a proximal sheath; a proximal shaft extending through the proximal sheath; an expandable proximal filter carried by the proximal shaft and collapsed within the proximal sheath; an articulable distal sheath extending through the proximal shaft, the articulable distal sheath having an articulation zone comprising a pull wire, wherein proximal retraction of the pull wire causes the articulation zone to articulate; an elongate, flexible tubular body, having a proximal end and a distal end, and a guidewire lumen extending therethrough, the elongate flexible tubular body extending through the articulable sheath; a filter frame comprising a loop and a strut;
the loop residing in a plane that intersects the tubular body at a non normal angle, and the strut connecting the loop to the tubular body;a filter membrane extending from the loop in a distal direction to a point of attachment to the tubular body; and a flex zone on the tubular body positioned proximal to the filter frame and distal to the expandable proximal filter, the flex zone having a different flexibility than proximal and distal adjacent portions of the tubular body and wherein the guidewire lumen extends through the flex zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification