Cardiac treatment system and method
Devices and methods for providing localized pressure to a region of a patient's heart to improve heart functioning, including: (a) a jacket made of a flexible biocompatible material, the jacket having an open top end that is received around the heart and a bottom portion that is received around the apex of the heart; and (b) at least one inflatable bladder disposed on an interior surface of the jacket, the inflatable bladder having an inelastic outer surface positioned adjacent to the jacket and an elastic inner surface such that inflation of the bladder causes the bladder to deform substantially inwardly to exert localized pressure against a region of the heart.
1. A method of providing localized pressure to regions of a heart to improve heart functioning, the method comprising:
a) positioning an assembly around the heart, wherein the assembly comprises:
a jacket comprising a flexible biocompatible material having an open top end that is positioned in an atrial-ventricular (A-V) groove of the heart and a bottom portion that is received around the ventricles of the heart;
a first inflatable bladder disposed on an interior surface of the jacket; and
a second inflatable bladder disposed on the interior surface of the jacket,
wherein each of the first and second inflatable bladders are located near the top end of the jacket such that each of the first and second inflatable bladders are positioned on an external wall of an upper portion of the ventricles of the heart while the top end is in the A-V groove;
(b) inflating the first inflatable bladder such that the first inflatable bladder exerts localized pressure on the external wall of the upper portion of the ventricles to reduce valve regurgitation; and
(c) inflating the second inflatable bladder such that the second inflatable bladder exerts localized pressure on the external wall of the upper portion of the ventricles to reduce valve regurgitation,
wherein said inflating the first inflatable bladder and said inflating the second inflatable bladder occur simultaneously.
2. The method of claim 1 , further comprising inflating a third inflatable bladder of the assembly to exert a localized pressure on the external wall of the heart adjacent to a papillary muscle of the heart.
3. The method of claim 1 , wherein said inflating the first inflatable bladder and said inflating the second inflatable bladder occur after fibrotic encapsulation of the jacket on the heart.
4. A method of providing localized pressure to regions of a heart to improve heart functioning, the method comprising:
a) positioning an assembly around the heart, wherein the assembly comprises:
a jacket comprising a flexible biocompatible material having an open top end that is positioned in an atrial-ventricular (A-V) groove of the heart and a bottom portion that is received around the ventricles of the heart;
a first inflatable bladder disposed on an interior surface of the jacket; and
a second inflatable bladder disposed on the interior surface of the jacket,
wherein each of the first and second inflatable bladders are located near the top end of the jacket such that each of the first and second inflatable bladders are positioned on an external wall of an upper portion of the ventricles of the heart while the top end is in the A-V groove;
(b) increasing inflation of the first inflatable bladder such that the first inflatable bladder exerts localized pressure on the external wall of the upper portion of the ventricles to reduce valve regurgitation; and
(c) increasing inflation of the second inflatable bladder such that the second inflatable bladder exerts localized pressure on the external wall of the upper portion of the ventricles to reduce valve regurgitation,
wherein said inflating the first inflatable bladder and said inflating the second inflatable bladder occur after fibrotic encapsulation of the jacket on the heart.
5. The method of claim 4 , wherein the assembly further comprises a third inflatable bladder, and wherein the method further comprises inflating the third inflatable bladder such that the third inflatable bladder exerts localized pressure on the external wall of the heart adjacent to a papillary muscle of the heart.
6. A cardiac implant for implantation around an exterior of a heart, the cardiac implant comprising:
a mesh jacket configured for implantation circumferentially around ventricles of the heart, the mesh jacket including an open top end configured to be positioned in an atrial-ventricular (A-V) groove of the heart;
an elastic band around the top end;
a first inflatable bladder disposed on an interior surface of the jacket, the first inflatable bladder located such that, when the top end is in the A-V groove, the first inflatable bladder is positionable on an external ventricular wall of the heart;
a second inflatable bladder disposed on the interior surface of the jacket, the second inflatable bladder located such that, when the top end is in the A-V groove, the second inflatable bladder is positionable on the external ventricular wall of the heart; and
a third inflatable bladder disposed on the interior surface of the jacket, the third inflatable bladder located farther from the top end than the first inflatable bladder and the second inflatable bladder.
7. The cardiac implant of claim 6 , wherein the first inflatable bladder and the second inflatable bladder are each attached to the jacket.
8. The cardiac implant of claim 7 , wherein the third inflatable bladder is unattached to the jacket.
9. The method of claim 6 , wherein said inflating the first inflatable bladder and said inflating the second inflatable bladder occur after fibrotic encapsulation of the jacket on the heart.
10. The method of claim 6 , wherein said inflating the first inflatable bladder and said inflating the second inflatable bladder occur simultaneously.