Intravascular blood filters and methods of use
First Claim
Patent Images
1. A method of intravascular blood filtration, comprising:
- providing a filter system comprising an expandable proximal filter and an expandable distal filter;
translating a proximal sheath proximally relative to the proximal filter to permit the proximal filter to expand from a collapsed configuration within the proximal sheath to an expanded configuration within a first vessel;
pulling a single pull wire to deflect a distal articulatable sheath independently of the proximal sheath and of the proximal filter and from a first configuration to a second configuration to position the distal articulatable sheath towards a second vessel, wherein in the second configuration, a distal section of the distal articulable sheath curves in a first plane and a proximal section of the distal articulatable sheath curves in a second plane, wherein the first plane is out-of-plane from the second plane, wherein pulling the single pull wire deflects a proximal section of the distal articulatable sheath and deflects a distal section of the distal articulatable sheath, and wherein the distal section of the distal articulatable sheath is configured to continue to bend without further bending the proximal section of the distal articulatable sheath when the distal section of the articulatable sheath is articulated by the single pull wire; and
advancing a tubular member carrying the expandable distal filter thereon distally from the distal articulatable sheath to permit the distal filter to expand from a collapsed configuration within the distal articulatable sheath to an expanded configuration within the second vessel.
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Abstract
Multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a multi-filter blood filtering system captures and removes particulates dislodge or generated during a surgical procedure and circulating in a patient'"'"'s vasculature. In some embodiments a dual filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.
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Citations
28 Claims
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1. A method of intravascular blood filtration, comprising:
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providing a filter system comprising an expandable proximal filter and an expandable distal filter; translating a proximal sheath proximally relative to the proximal filter to permit the proximal filter to expand from a collapsed configuration within the proximal sheath to an expanded configuration within a first vessel; pulling a single pull wire to deflect a distal articulatable sheath independently of the proximal sheath and of the proximal filter and from a first configuration to a second configuration to position the distal articulatable sheath towards a second vessel, wherein in the second configuration, a distal section of the distal articulable sheath curves in a first plane and a proximal section of the distal articulatable sheath curves in a second plane, wherein the first plane is out-of-plane from the second plane, wherein pulling the single pull wire deflects a proximal section of the distal articulatable sheath and deflects a distal section of the distal articulatable sheath, and wherein the distal section of the distal articulatable sheath is configured to continue to bend without further bending the proximal section of the distal articulatable sheath when the distal section of the articulatable sheath is articulated by the single pull wire; and advancing a tubular member carrying the expandable distal filter thereon distally from the distal articulatable sheath to permit the distal filter to expand from a collapsed configuration within the distal articulatable sheath to an expanded configuration within the second vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An intravascular blood filter system, comprising:
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an expandable proximal filter adapted to be collapsed within a proximal sheath; a distal articulatable sheath disposed distal to the proximal sheath, the distal articulatable sheath comprising a distal section and a proximal section, the distal section being configured to curve in a first plane, the proximal section being configured to curve in a second plane, wherein the first plane is out-of-plane from the second plane; a single pull wire configured to articulate the proximal section of the distal articulatable sheath and articulate the distal section of the distal articulatable sheath; and an expandable distal filter adapted to be collapsed within the distal articulatable sheath, wherein the distal articulatable sheath is adapted to be independently deflected relative to the proximal sheath and the proximal filter, and wherein the distal section of the distal articulatable sheath is configured to continue bending without further bending of the proximal section of the distal articulatable sheath when the distal section of the articulatable sheath is articulated by the single pull wire. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. An intravascular blood filter system comprising:
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a handle; a proximal shaft secured to the handle; a proximal sheath secured to the handle and axially movable with respect to the proximal shaft; a proximal filter secured to the proximal shaft, wherein the proximal sheath is axially movable with respect to the proximal filter; a distal shaft secured to the handle; a distal articulatable sheath secured to the distal shaft and axially movable with respect to the proximal sheath, the distal articulatable sheath comprising a distal section and a proximal section, the distal section being configured to curve in a first plane, the proximal section being configured to curve in a second plane, wherein the first plane is out-of-plane from the second plane; a single pull wire having a length with a proximal end and a distal section;
the pull wire proximal end being secured to the handle and the pull wire distal section being secured to the distal articulatable sheath, the single pull wire configured to articulate the proximal section of the distal articulatable sheath and to articulate the distal section of the distal articulatable sheath, the distal section of the distal articulatable sheath being configured to continue bending without further bending of the proximal section of the distal articulatable sheath when the distal section of the articulatable sheath is articulated by the single pull wire;a distal filter shaft; and a distal filter secured to the distal filter shaft and axially movable with respect to the proximal sheath and the distal articulatable sheath. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification