Clot capture systems and associated methods
First Claim
Patent Images
1. A system, including:
- a tubular member defining a lumen extending therethrough;
a microcatheter slidably disposed in the lumen;
an expandable framework positioned at a distal end of the tubular member, the expandable framework defining a lumen in communication with the lumen of the tubular member and expandable between a collapsed state and an expanded state,wherein in the expanded state, the expandable framework is advanced distal of a distal end of the microcatheter and then caused to expand from the collapsed state to the expanded state projecting radially outwardly of the tubular member with an open distalmost end defining a maximum radial size of the expandable framework,wherein in the collapsed state, a proximalmost end of the expandable framework and the tubular member have a common radial dimension less than the maximum radial size of the expandable framework;
an expandable porous body configured to capture a clot, the expandable porous body being longitudinally moveable distally of the tubular member and the expandable framework; and
a gap disposed between the expandable framework and the expandable porous body, the gap sized to receive the clot.
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Abstract
A clot capture system for disengaging a clot from a vessel wall and removing the clot from the vessel. The system may include a clot capture device for placement on a distal side of a clot. The clot capture device may have a retracted delivery configuration and an expanded deployed configuration. The clot removal device may have a proximal support frame, and a distal fiber net. The support frame may have a retracted delivery configuration and an expanded deployed configuration. The proximal support frame in the expanded configuration may define a proximal inlet mouth for engaging a clot and a net for confining the clot. An elongate member may facilitate capture and/or withdrawal of a clot from a vessel.
623 Citations
19 Claims
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1. A system, including:
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a tubular member defining a lumen extending therethrough; a microcatheter slidably disposed in the lumen; an expandable framework positioned at a distal end of the tubular member, the expandable framework defining a lumen in communication with the lumen of the tubular member and expandable between a collapsed state and an expanded state, wherein in the expanded state, the expandable framework is advanced distal of a distal end of the microcatheter and then caused to expand from the collapsed state to the expanded state projecting radially outwardly of the tubular member with an open distalmost end defining a maximum radial size of the expandable framework, wherein in the collapsed state, a proximalmost end of the expandable framework and the tubular member have a common radial dimension less than the maximum radial size of the expandable framework; an expandable porous body configured to capture a clot, the expandable porous body being longitudinally moveable distally of the tubular member and the expandable framework; and a gap disposed between the expandable framework and the expandable porous body, the gap sized to receive the clot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a tubular member defining a lumen extending therethrough; a microcatheter slidably disposed in the lumen; an expandable framework positioned distally of a distal end of the tubular member, the expandable framework defining a lumen in communication with the lumen of the tubular member and having an open distal end, and self-expandable between a collapsed state and a expanded state, wherein in the collapsed state, the expandable framework and the tubular member have a common radial dimension less than a maximum radial size of the expandable framework, and wherein in the expanded state, the expandable framework is advanced distal of a distal end of the microcatheter and then caused to expand from the collapsed state to the expanded state projecting radially outwardly of the tubular member with a distalmost end having the maximum radial size of the expandable framework; an expandable capture structure configured to capture a clot, the expandable capture structure being longitudinally moveable with respect to the tubular member from a collapsed delivery state to a deployed expanded state distally beyond the expandable framework, wherein the capture structure is porous and includes an open proximal mouth coupled to a longitudinally extending member moveably received within the lumen of the tubular member; and a gap disposed between the expandable framework and the expandable capture structure, the gap sized to receive the clot. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method, including:
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slidably positioning a tubular member over a microcatheter; expanding the tubular member from a collapsed state to an expanded state by; distally advancing an expandable framework located at a distal end of the tubular member distal of a distal end of a microcatheter; and subsequently projecting radially the tubular member with an open distalmost end defining a maximum radial size of the expandable framework, wherein the expandable framework defines a lumen in communication with a lumen of the tubular member, and wherein, in the collapsed state, a proximalmost end of the expandable framework and the tubular member have a common radial dimension less than the maximum radial size of the expandable framework; extending an expandable porous body distally of the tubular member to expand the expandable porous body from a collapsed delivery state to a deployed expanded state, the expandable porous body having a closed distal end and an open proximal mouth; positioning a gap between the expandable framework and the expandable porous body, the gap sized for capturing an obstruction; and receiving the obstruction in the gap via the expandable framework and the expandable porous body. - View Dependent Claims (16, 17, 18, 19)
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Specification