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US 12,678,191 B2Granted
Anchor for transcatheter access into the coronary sinus
AssigneeEdwards Lifesciences Corporation
InventorsLinda Thai, Michael G. Valdez, Tarannum Ishaq Gutierrez, Don Huy Tran
Life of this patent
Estimating the term…
Abstract
A delivery sheath can comprise an elongate tubular member and an anchor on a distal portion of the elongate tubular member, the anchor being configured to engage with the coronary sinus ostium, or both the coronary sinus ostium and a portion of the coronary sinus adjacent to the ostium, so as to provide stable transcatheter access into the coronary sinus. The anchor can be configured to permit blood flow through the ostium while in engagement with the ostium.
Claims20
A method of accessing a heart location, the method comprising:
- providing a steerable sheath comprising an elongate tubular member, a circumferential balloon anchor circumferentially positioned around a distal portion of the elongate tubular member and a plurality of cords circumferentially distributed around the circumferential balloon anchor longitudinally, the plurality of cords being movable relative to the elongate tubular member along a longitudinal axis of the elongate tubular member;
- introducing the distal portion of the elongate tubular member through an inferior vena cava or a superior vena cava, and into a right atrium;
- inserting a distal end of the elongate tubular member through an ostium of a coronary sinus into the coronary sinus from the right atrium, and positioning the distal end at a target location within the coronary sinus;
- inflating the circumferential balloon anchor and moving the plurality of cords proximally relative to the elongate tubular member to tension the plurality of cords to engage an inflated circumferential balloon anchor with the plurality of cords to create corresponding circumferentially distributed longitudinal indentations on the inflated circumferential balloon anchor;
- and
- positioning the inflated circumferential balloon anchor partially in the coronary sinus and engaging a distal portion of the inflated circumferential balloon anchor having a longitudinal taper with the ostium of the coronary sinus while permitting blood flow through the ostium past the inflated circumferential balloon anchor along a path defined at least in part by the circumferentially distributed longitudinal indentations.
3 more elements
A method of accessing a heart location, the method comprising:
- providing a steerable sheath comprising an elongate tubular member and an anchor positioned on a distal portion of the elongate tubular member, a plurality of cords circumferentially distributed around the anchor longitudinally to the anchor, the plurality of cords being movable relative to the elongate tubular member along a longitudinal axis of the elongate tubular member;
- providing a delivery catheter sized for advancement through an inner lumen of the elongate tubular member, the delivery catheter carrying a shunt;
- advancing the distal portion of the elongate tubular member through an inferior vena cava or a superior vena cava, and into a right atrium;
- inserting a distal end of the elongate tubular member through an ostium of a coronary sinus into the coronary sinus from the right atrium;
- expanding the anchor and moving the plurality of cords proximally relative to the elongate tubular member and the anchor to tension the plurality of cords onto the expanded anchor, engaging the expanded anchor to form corresponding longitudinal indentations on the expanded anchor;
- engaging a distal portion of the anchor with the ostium of the coronary sinus, the anchor being formed with the longitudinal indentations for permitting blood flow through the ostium past the anchor;
- advancing a distal portion of the delivery catheter out of the distal end of the elongate tubular member to deploy the shunt;
- and
- deploying the shunt through a wall of the coronary sinus to allow blood to pass from a left atrium into the coronary sinus and alleviate elevated left atrial pressure,
- wherein engagement of the anchor with the ostium stabilizes the delivery catheter during deployment of the shunt.
7 more elements
A method of accessing a heart location, the method comprising:
- providing a steerable sheath comprising an elongate tubular member, an inflatable balloon anchor on a distal portion of the elongate tubular member, a plurality of cords circumferentially distributed around the inflatable balloon anchor longitudinally, the plurality of cords being movable relative to the elongate tubular member along a longitudinal axis of the elongate tubular member, and a distal portion of the inflatable balloon anchor having a longitudinal profile comprising a taper toward a distal end of the inflatable balloon anchor;
- inserting a distal end of the elongate tubular member through an ostium of a coronary sinus into the coronary sinus from the right atrium;
- and
- positioning the inflatable balloon partially in the coronary sinus and engaging the distal portion of the inflatable balloon anchor having the taper with the coronary sinus ostium while permitting blood flow through the ostium past the inflatable balloon anchor.
1 more element
Dependencies are inferred from the claim text.