APPARATUS AND METHODS FOR DELIVERING DEVICES FOR REDUCING LEFT ATRIAL PRESSURE
First Claim
1. An apparatus for delivering a device for regulating blood pressure between a patient'"'"'s left atrium and right atrium, the apparatus comprising:
- one or more latching legs having a hook portion, the one or more latching legs configured to move from a first position, where the one or more latching legs extend radially outward, to a second position, where the one or more latching legs move radially inward to release the device;
a pull chord configured to move the one or more latching legs from the first position to the second position; and
a catheter having a lumen and a center axis, the one or more latching legs and the pull chord at least partially disposed within the lumen,wherein the hook portion of the one or more latching legs hooks outwardly away from the center axis.
1 Assignment
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Accused Products
Abstract
A device for regulating blood pressure between a patient'"'"'s left atrium and right atrium, and apparatus for delivery the device, are provided. The delivery apparatus may include one or more latching legs, a release ring, a pull chord, and a catheter wherein the latching legs are configured to engage the device for delivery. The inventive devices may reduce left atrial pressure and left ventricular end diastolic pressure, and may increase cardiac output, increase ejection fraction, relieve pulmonary congestion, and lower pulmonary artery pressure, among other benefits. The inventive devices may be used, for example, to treat subjects having heart failure, pulmonary congestion, or myocardial infarction, among other pathologies.
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Citations
20 Claims
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1. An apparatus for delivering a device for regulating blood pressure between a patient'"'"'s left atrium and right atrium, the apparatus comprising:
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one or more latching legs having a hook portion, the one or more latching legs configured to move from a first position, where the one or more latching legs extend radially outward, to a second position, where the one or more latching legs move radially inward to release the device; a pull chord configured to move the one or more latching legs from the first position to the second position; and a catheter having a lumen and a center axis, the one or more latching legs and the pull chord at least partially disposed within the lumen, wherein the hook portion of the one or more latching legs hooks outwardly away from the center axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of delivering a device to a subject with heart pathology, the subject having a heart with an atrial septum having a fossa ovalis therein, the method comprising:
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providing a delivery apparatus comprising one or more latching legs having a hook portion and a catheter having a lumen and a center axis, the one or more latching legs at least partially disposed within the lumen and the hook portion of the one or more latching legs configured to hook outwardly away from the center axis; coupling the hook portion to the device; positioning the device across a puncture through the fossa ovalis; and moving the one or more latching legs from a first position, where the one or more latching legs extend radially outward, to a second position, where the one or more latching legs move radially inward to decouple the hook portion from the device such that the device engages the atrial septum. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of delivering a device to a subject with heart pathology, the subject having a heart with an atrial septum having a fossa ovalis therein, the method comprising:
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providing a delivery apparatus comprising one or more latching legs having a hook portion and a catheter having a lumen and a center axis, the one or more latching legs at least partially disposed within the lumen; coupling the hook portion to the device; positioning the device across a puncture through the fossa ovalis at a non-perpendicular angle between the center axis of the catheter and an outer wall of the atrial septum; and moving the one or more latching legs from a first position, where the one or more latching legs extend radially outward, to a second position, where the one or more latching legs move radially inward to decouple the hook portion from the device such that the device engages the atrial septum.
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Specification