Systems for anchoring a medical device in a body lumen
First Claim
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1. A system for anchoring a device, comprising:
- a sheath having a plurality of side openings;
a rotatable element disposed within the sheath; and
at least two projections extending radially from and attached to the rotatable element, wherein rotation of the rotatable element with respect to the sheath advances the distal ends of the projections radially outwardly through the openings, one of the two projections being distal the other of the two projections,wherein the at least two projections are formed from a shape memory material, and wherein the at least two projections spring radially outwardly as they pass outwardly through the side opening as the rotatable element is rotated with respect to the sheath when the at least two projections are exposed to a temperature change.
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Abstract
A system for securing a device in tissue, having a sheath having a plurality of side openings; a rotatable element disposed within the sheath; and a plurality of curved projections extending from the rotatable element, wherein rotation of the rotatable element within the sheath pushes distal ends of each of the curved projections outwardly through one of the plurality of openings and into the tissue.
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Citations
16 Claims
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1. A system for anchoring a device, comprising:
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a sheath having a plurality of side openings; a rotatable element disposed within the sheath; and at least two projections extending radially from and attached to the rotatable element, wherein rotation of the rotatable element with respect to the sheath advances the distal ends of the projections radially outwardly through the openings, one of the two projections being distal the other of the two projections, wherein the at least two projections are formed from a shape memory material, and wherein the at least two projections spring radially outwardly as they pass outwardly through the side opening as the rotatable element is rotated with respect to the sheath when the at least two projections are exposed to a temperature change. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of tissue closure, comprising:
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inserting a distal end of a device having a sheath with at least a pair of side openings, a rotatable element within the sheath, and two pairs of projections, each projections having a distal end and a suture-carrying feature thereon, extending radially from the rotatable element, the pairs of projections attached to the rotatable element, one of the pair of projections being distal the other of the pair of projections, the suture-carrying feature attached to an end of a suture, wherein rotation of the rotatable element with respect to the sheath pushes each distal end of the projections radially outwardly through the each openings into an artery; advancing a needle through a wall of the artery and into the suture-carrying feature; and withdrawing the needle through the wall of the artery to pull the end of the suture through the wall of the artery. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification