Device and method for improving heart valve function
First Claim
1. A blood-flow controlling device for treating a mitral or tricuspid valve in need thereof, the device comprising:
- a blood-flow blocking portion comprising an elongate structure with a substantially cylindrical portion, a portion of the blood-flow blocking portion disposable between leaflets of a native mitral or tricuspid valve and fillable with blood;
a flexible, elongate body portion passing inside of the blood-flow blocking portion, the blood-flow blocking portion slidable up and down the body portion;
an anchor portion disposed on a distal end of the elongate body portion, the anchor portion engageable with heart tissue at or adjacent a heart apex, the anchor portion comprising a tubular body and a plurality of pointed, elongated prongs emanating from a distal end of the tubular body, the plurality of elongated prongs self-expandable from a compressed configuration, in which the plurality of elongated prongs extend distally, and an expanded configuration, in which the plurality of elongated prongs are deflected radially outward relative to a center of the tubular body;
an anchor delivery catheter for delivering the anchor portion having a distal end sheath that maintains the plurality of elongated prongs in the compressed configuration; and
a locking catheter slidable along the elongate body portion,wherein the locking catheter is operable to lock the blood-flow blocking portion to the elongate body portion, preventing sliding therebetween.
1 Assignment
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Accused Products
Abstract
The invention is a method for reducing regurgitation through a mitral valve. The device and method is directed to an anchor portion for engagement with the heart wall and an expandable valve portion configured for deployment between the mitral valve leaflets. The valve portion is expandable for preventing regurgitation through the mitral valve while allowing blood to circulate through the heart. The expandable valve portion may include apertures for reducing the stagnation of blood. In a preferred configuration, the device is preferably configured to be delivered in two-stages wherein an anchor portion is first delivered and the valve structure is then coupled to the anchor portion. In yet another embodiment, the present invention provides a method of forming an anchor portion wherein a disposable jig is used to mold the anchor portion into a three-dimensional shape for conforming to a heart chamber.
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Citations
20 Claims
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1. A blood-flow controlling device for treating a mitral or tricuspid valve in need thereof, the device comprising:
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a blood-flow blocking portion comprising an elongate structure with a substantially cylindrical portion, a portion of the blood-flow blocking portion disposable between leaflets of a native mitral or tricuspid valve and fillable with blood; a flexible, elongate body portion passing inside of the blood-flow blocking portion, the blood-flow blocking portion slidable up and down the body portion; an anchor portion disposed on a distal end of the elongate body portion, the anchor portion engageable with heart tissue at or adjacent a heart apex, the anchor portion comprising a tubular body and a plurality of pointed, elongated prongs emanating from a distal end of the tubular body, the plurality of elongated prongs self-expandable from a compressed configuration, in which the plurality of elongated prongs extend distally, and an expanded configuration, in which the plurality of elongated prongs are deflected radially outward relative to a center of the tubular body; an anchor delivery catheter for delivering the anchor portion having a distal end sheath that maintains the plurality of elongated prongs in the compressed configuration; and a locking catheter slidable along the elongate body portion, wherein the locking catheter is operable to lock the blood-flow blocking portion to the elongate body portion, preventing sliding therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A blood-flow controlling device for treating a mitral or tricuspid valve in need thereof, the device comprising:
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a blood-flow blocking portion comprising an elongate structure, a portion of the blood-flow blocking portion disposable between leaflets of a native mitral or tricuspid valve and fillable with blood; a flexible, elongate body portion passing inside of the blood-flow blocking portion, the blood-flow blocking portion slidable up and down the body portion; and an anchor portion disposed on a distal end of the elongate body portion, the anchor portion engageable with heart tissue at or adjacent a heart apex;
an anchor delivery catheter for delivering the anchor portion having a distal end sheath from which the anchor portion is expelled; anda locking catheter slidable along the elongate body portion, wherein the locking catheter is operable to lock the blood-flow blocking portion to the elongate body portion, preventing sliding therebetween. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification