Over-the-wire cardiac implant delivery system for treatment of CHF and other conditions
First Claim
1. A method for treating a heart of a patient comprising:
- inserting a guidewire through a wall of the heart;
inserting a delivery catheter over the guidewire and into the heart, the delivery catheter comprising a first end, a second end, and a lumen extending between the first end and the second end through which the guidewire is inserted;
inserting an anchor over the guidewire via the delivery catheter to a position within a chamber of the heart, the anchor being coupled with a tension member and being operationally coupled with the guidewire so as to maintain the anchor in a low profile configuration with the anchor axially aligned with the delivery catheter as the anchor is inserted within the chamber;
deploying the anchor within the chamber by removing the guidewire to enable the anchor to reorient to a deployed configuration within the chamber of the heart; and
applying tension to the anchor via the tension member so as to urge the wall against a second wall of the heart.
1 Assignment
0 Petitions
Accused Products
Abstract
Medical devices, systems, and methods reduce the distance between two locations in tissue in a minimally invasive manner, often for treatment of congestive heart failure. In one embodiment, an anchor of an implant system may, when the implant system is fully deployed, reside within the right ventricle in engagement with the ventricular septum. A tension member may extend from that anchor through the septum and an exterior wall of the left ventricle to a second anchor disposed along an epicardial surface of the heart. Deployment of the anchor within the right ventricle may be performed by inserting a guidewire through the septal wall into the right ventricle. The anchor may be inserted into the right ventricle over the guidewire and through a lumen of a delivery catheter. Delivering the anchor over the guidewire may provide improved control in the delivery and placement of the anchor within the right ventricle.
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Citations
27 Claims
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1. A method for treating a heart of a patient comprising:
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inserting a guidewire through a wall of the heart; inserting a delivery catheter over the guidewire and into the heart, the delivery catheter comprising a first end, a second end, and a lumen extending between the first end and the second end through which the guidewire is inserted; inserting an anchor over the guidewire via the delivery catheter to a position within a chamber of the heart, the anchor being coupled with a tension member and being operationally coupled with the guidewire so as to maintain the anchor in a low profile configuration with the anchor axially aligned with the delivery catheter as the anchor is inserted within the chamber; deploying the anchor within the chamber by removing the guidewire to enable the anchor to reorient to a deployed configuration within the chamber of the heart; and applying tension to the anchor via the tension member so as to urge the wall against a second wall of the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for treating a heart of a patient, the heart comprising a chamber bordered by a wall, the method comprising:
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inserting a guidewire into the chamber so that the inserted guidewire traverses the wall through an aperture in the wall; inserting a dilating catheter over the guidewire to a position adjacent the wall, the dilating catheter comprising a tapering threaded tip having a thread axis; rotating the dilating catheter about the thread axis as the dilating catheter is inserted through the wall so that the tapering threaded tip contacts tissue of the wall and rotational engagement between the tapering threaded tip and the tissue dilates the aperture of the wall to an expanded aperture; inserting a delivery catheter over the guidewire and through the expanded aperture, the delivery catheter comprising a lumen through which the guidewire is inserted; inserting an anchor over the guidewire and through the lumen of the delivery catheter, the anchor being coupled with a tension member and operationally coupled with the guidewire in a low profile configuration that enables insertion of the anchor through the expanded aperture; reorienting the anchor within the chamber from the low profile configuration to a deployed configuration by removing the guidewire; and applying tension to the anchor via the tension member. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for treating a heart of a patient, the heart comprising a chamber bordered by a septum, the method comprising:
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inserting a guidewire into the chamber so that the inserted guidewire traverses a wall of the septum through an aperture in the septum wall; inserting a dilating catheter over the guidewire to a position adjacent the septum wall, the dilating catheter comprising a tapering threaded distal tip having a thread axis; rotating the dilating catheter about the thread axis as the dilating catheter is inserted through the septum wall so that the tapering threaded tip contacts tissue and rotational engagement between the tapering threaded tip and the tissue dilates the aperture of the septum wall to an expanded aperture; inserting a delivery catheter through the expanded aperture of the septum wall; inserting an anchor over the guidewire and through a lumen of the delivery catheter to a position distally of the septum wall, the anchor being coupled with a tension member and being operationally coupled with the guidewire in a low profile configuration that enables insertion of the anchor through the lumen of the delivery catheter, the anchor being deployable to a deployed configuration within the chamber upon removal of the guidewire; and applying tension to the anchor via the tension member so as to urge the septum wall of the heart against a chamber wall of the heart.
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Specification