Systems for anchoring a medical device in a body lumen
First Claim
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1. A system for anchoring a device in a body lumen or cavity, comprising:
- a sheath having at least one side opening;
a rotatable element disposed within the sheath; and
at least one projection extending radially from the rotatable element, wherein rotation of the rotatable element with respect to the sheath pushes a distal end of the projection radially outwardly through the opening and into the body lumen or cavity, the distal end of one of the at least one projection having a suture carrying feature, and wherein the at least one projection is formed from a shape memory material, and wherein the at least one projection springs radially outwardly as it passes outwardly through the side opening as the rotatable element is rotated with respect to the sheath when the at least one projection is 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
20 Claims
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1. A system for anchoring a device in a body lumen or cavity, comprising:
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a sheath having at least one side opening; a rotatable element disposed within the sheath; and at least one projection extending radially from the rotatable element, wherein rotation of the rotatable element with respect to the sheath pushes a distal end of the projection radially outwardly through the opening and into the body lumen or cavity, the distal end of one of the at least one projection having a suture carrying feature, and wherein the at least one projection is formed from a shape memory material, and wherein the at least one projection springs radially outwardly as it passes outwardly through the side opening as the rotatable element is rotated with respect to the sheath when the at least one projection is exposed to a temperature change. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of performing an arteriotomy closure, comprising:
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inserting a distal end of a device having a sheath with a side opening, a rotatable element within the sheath, and at least one projection having a suture-carrying feature thereon extending radially from the rotatable element, the suture-carrying feature attached to an end of a suture, wherein rotation of the rotatable element with respect to the sheath pushes the distal end of the projection radially outwardly through the opening into an artery, and wherein the at least one projection is formed from a shape memory material, and wherein the at least one projection springs radially outwardly as it passes outwardly through the side opening as the rotatable element is rotated with respect to the sheath when the at least one projection is exposed to a temperature change; 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)
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12. A system for anchoring a device in a body lumen or cavity, comprising:
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a sheath having at least one side opening; a rotatable element disposed within the sheath; and at least one projection extending radially from the rotatable element and being extendable radially outwardly through the at least one side opening and into the body lumen or cavity with rotation of the rotatable element, the at least one projection being formed from a shape memory material, wherein the at least one projection being configured to spring radially outwardly as it passes outwardly through the at least one side opening as the rotatable element is rotated with respect to the sheath when the at least one projection is exposed to a temperature change, a distal end of the at least one projection having a suture carrying feature. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification