Devices and methods for reducing cardiac valve regurgitation
First Claim
1. An implantable heart valve coaptation system for reducing regurgitation through the valve, comprising the following implantable elements:
- an elongated flexible rail having a ventricular anchor on the distal end thereof adapted to anchor into tissue within a ventricle, wherein the flexible rail has a length sufficient to extend from the ventricular anchor in the ventricular tissue to a subclavian vein, the flexible rail being made of material suitable for implant in the human body;
a delivery catheter having a lumen through which the flexible rail passes, the delivery catheter being made of material suitable for implant in the human body;
a valve leaflet coaptation member fixed on a distal end of the delivery catheter having a bell-shaped cover with a first end open and a flexible inner support holding the first end open, the delivery catheter having a length sufficient to extend from the coaptation member positioned within the heart valve leaflets to the subclavian vein, the coaptation member being made of material suitable for implant in the human body; and
a locking collet on a proximal end of the delivery catheter for securing the axial position of the coaptation member and delivery catheter on the flexible rail, the locking collet being made of material suitable for implant in the human body, the locking collet and/or catheter being adapted to be subcutaneously anchored outside the subclavian vein.
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Accused Products
Abstract
The present invention relates to devices and methods for improving the function of a defective heart valve, and particularly for reducing regurgitation through an atrioventricular heart valve—i.e., the mitral valve and the tricuspid valve. For a tricuspid repair, the device includes an anchor deployed in the tissue of the right ventricle, in an orifice opening to the right atrium, or anchored to the tricuspid valve. A flexible anchor rail connects to the anchor and a coaptation element on a catheter rides over the anchor rail. The catheter attaches to the proximal end of the coaptation element, and a locking mechanism fixes the position of the coaptation element relative to the anchor rail. Finally, there is a proximal anchoring feature to fix the proximal end of the coaptation catheter subcutaneously adjacent the subclavian vein. The coaptation element includes an inert covering and helps reduce regurgitation through contact with the valve leaflets.
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Citations
21 Claims
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1. An implantable heart valve coaptation system for reducing regurgitation through the valve, comprising the following implantable elements:
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an elongated flexible rail having a ventricular anchor on the distal end thereof adapted to anchor into tissue within a ventricle, wherein the flexible rail has a length sufficient to extend from the ventricular anchor in the ventricular tissue to a subclavian vein, the flexible rail being made of material suitable for implant in the human body; a delivery catheter having a lumen through which the flexible rail passes, the delivery catheter being made of material suitable for implant in the human body; a valve leaflet coaptation member fixed on a distal end of the delivery catheter having a bell-shaped cover with a first end open and a flexible inner support holding the first end open, the delivery catheter having a length sufficient to extend from the coaptation member positioned within the heart valve leaflets to the subclavian vein, the coaptation member being made of material suitable for implant in the human body; and a locking collet on a proximal end of the delivery catheter for securing the axial position of the coaptation member and delivery catheter on the flexible rail, the locking collet being made of material suitable for implant in the human body, the locking collet and/or catheter being adapted to be subcutaneously anchored outside the subclavian vein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An implantable heart valve coaptation system for reducing regurgitation through the valve, comprising the following implantable elements:
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an elongated flexible rail having a ventricular anchor on the distal end thereof adapted to anchor into tissue within a ventricle, wherein the flexible rail has a length sufficient to extend from the ventricular anchor in the ventricular tissue to a subclavian vein, the flexible rail being made of material suitable for implant in the human body; a delivery catheter having a lumen through which the flexible rail passes, the delivery catheter being made of material suitable for implant in the human body; a valve leaflet coaptation member fixed on a distal end of the delivery catheter having a smooth outer cover with a compressible foam inner support, the delivery catheter having a length sufficient to extend from the coaptation member positioned within the heart valve leaflets to the subclavian vein, the coaptation member being made of material suitable for implant in the human body; and a locking collet on a proximal end of the delivery catheter for securing the axial position of the coaptation member and delivery catheter on the flexible rail, the locking collet being made of material suitable for implant in the human body, the locking collet and/or catheter being adapted to be subcutaneously anchored outside the subclavian vein. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An implantable heart valve coaptation system for reducing regurgitation through the valve, comprising the following implantable elements:
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an elongated flexible rail having a ventricular anchor on the distal end thereof adapted to anchor into tissue within a ventricle, wherein the flexible rail has a length sufficient to extend from the ventricular anchor in the ventricular tissue to a subclavian vein, the flexible rail being made of material suitable for implant in the human body; a delivery catheter having a lumen through which the flexible rail passes, the delivery catheter being made of material suitable for implant in the human body; a valve leaflet coaptation member fixed on a distal end of the delivery catheter over a section of the catheter having perforations opening to a lumen of the catheter, the coaptation member having an outer cover of polycarbonate urethane with a flexible inner support holding the cover outward from the delivery catheter, the outer cover providing a closed chamber around the perforations, and wherein the delivery catheter has a length sufficient to extend from the coaptation member positioned within the heart valve leaflets to the subclavian vein, the coaptation member being made of material suitable for implant in the human body; and a locking collet on a proximal end of the delivery catheter for securing the axial position of the coaptation member and delivery catheter on the flexible rail, the locking collet being made of material suitable for implant in the human body, the locking collet and/or catheter being adapted to be subcutaneously anchored outside the subclavian vein. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification