Embolic filtering devices
First Claim
1. An expandable frame for an embolic filtering device used to capture embolic debris in a body vessel, the frame comprising:
- a first half frame adapted to move between an unexpanded position and an expanded position, the first half frame having a first control arm connected to a second control arm by a partial loop;
a second half frame adapted to move between an unexpanded position and an expanded position, the second half frame having a first control arm connected to a second control arm by a partial loop, the partial loops of the first and second half frames cooperating to form a composite opening for attachment of a filtering element when placed in the expanded position; and
an articulation region associated with at least one of the first and second half frames.
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Accused Products
Abstract
An expandable frame for an embolic filtering device used to capture embolic debris in a body vessel includes a first half frame having a first control arm connected to a second control arm by a partial loop and a second half frame having a first control arm connected to a second control arm by a partial loop. The partial loops cooperatively form a composite loop for attachment of a filtering element which will expand in the body vessel to capture embolic debris entrained in the fluid of the vessel. The expandable frame and filtering element can be mounted on a filter support structure, such as a coiled wire, and mounted on a guide wire. The expandable frames includes an articulation region which helps to distribute the strain which can be developed when the frame moves between an expanded and deployed position. The expandable frame may include further strain distributing bends which help distribute strain and increase the bendability of the frame.
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Citations
31 Claims
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1. An expandable frame for an embolic filtering device used to capture embolic debris in a body vessel, the frame comprising:
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a first half frame adapted to move between an unexpanded position and an expanded position, the first half frame having a first control arm connected to a second control arm by a partial loop;
a second half frame adapted to move between an unexpanded position and an expanded position, the second half frame having a first control arm connected to a second control arm by a partial loop, the partial loops of the first and second half frames cooperating to form a composite opening for attachment of a filtering element when placed in the expanded position; and
an articulation region associated with at least one of the first and second half frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30, 31)
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15. An embolic filtering device used to capture embolic debris in a body vessel, comprising:
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an elongate member; and
an expandable filter assembly including a self-expanding frame having a first half frame adapted to move between an unexpanded position and an expanded position, the first half frame having a first control arm connected to a second control arm by a partial loop;
a second half frame adapted to move between an unexpanded position and an expanded position, the second half frame having a first control arm connected to a second control arm by a partial loop, the partial loops of the first and second half frames cooperating to form a composite opening;
a filtering element attached to the partial loops of the first and second half frames; and
filter support structure upon which the expandable filter assembly is mounted, the filter support structure having a lumen extending therethrough to receive the elongated member. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An expandable frame for an embolic filtering device used to capture embolic debris in a body vessel, the frame comprising:
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a first control arm having a distal end and a proximal end;
a second control arm having a distal end and a proximal end;
a pair of partial loops connected to the first and second control arm near the distal ends of the first and second control arms, the partial loops being adapted to move between an unexpanded position and an expanded position, the partial loops cooperating to form a composite loop when placed in the expanded position, the partial loops being adapted for attachment of a filtering element. - View Dependent Claims (23, 24, 25, 26)
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27. An embolic filtering system used to capture embolic debris in a body vessel, comprising:
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an elongated member having a proximal end and a distal end;
an expandable filter assembly including a self-expanding frame moveable between an expanded position and an unexpanded position;
a filtering element attached to and movable with the expandable filter;
a restraining sheath having a distal end portion and a proximal end, the distal end portion of the restraining sheath being adapted to receive the expandable filter assembly for maintaining the filter assembly in the unexpanded position and being movable to expose the filter assembly, the sheath having split seam extending therethrough from the proximal end to a location proximal to the distal end portion; and
a torque device mountable on the elongate member to allow the user to rotate the elongate member, the torque device having a side port adapted to receive the proximal end of the restraining sheath to help remove the sheath from the elongate member through proximal retraction of the sheath through the side port. - View Dependent Claims (28, 29)
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Specification