Device for proactive modulation of cardiac strain patterns
First Claim
1. A direct cardiac compression device adapted to surround the heart comprising:
- an outer shell comprising a basal annulus opposite an apical annulus and a series of rods that span between the basal annulus and the apical annulus to form a vase-shaped outer shell;
an inner membrane in contact with the outer shell having a contour profile from a basal end to an apical end to surround the heart; and
one or more contoured chambers formed between the outer shell and the inner membrane to selectively compress the heart to actively promote a contraction strain pattern characterized by non-inversion or lack of gross perturbation of the curvature on a diseased or damaged myocardium that promotes beneficial growth and remodeling of the myocardium.
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Abstract
A direct cardiac assist device which may aid in ventricular recovery. The device proactively modulates cardiac strain pattern to produce a contraction strain pattern that induces beneficial growth and remodeling of the myocardium or prevents or reduces apoptosis of the myocytes. The device may include an outer shell. membrane, or mesh and an inner membrane. The space between the outer member and the membrane may be filled with fluid that is pressurized during contraction. The device prescribes a beneficial strain pattern during heart contraction. This strain pattern does not invert the curvatures or grossly alter the curvatures of the heart and may assist in myocyte regrowth and healing of the failing heart.
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Citations
17 Claims
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1. A direct cardiac compression device adapted to surround the heart comprising:
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an outer shell comprising a basal annulus opposite an apical annulus and a series of rods that span between the basal annulus and the apical annulus to form a vase-shaped outer shell; an inner membrane in contact with the outer shell having a contour profile from a basal end to an apical end to surround the heart; and one or more contoured chambers formed between the outer shell and the inner membrane to selectively compress the heart to actively promote a contraction strain pattern characterized by non-inversion or lack of gross perturbation of the curvature on a diseased or damaged myocardium that promotes beneficial growth and remodeling of the myocardium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of assisting a diseased or damaged heart comprising the steps of:
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positioning a direct cardiac compression device around the heart, wherein the direct cardiac compression device comprises; an outer shell in contact with an inner membrane, wherein the outer shell comprises a basal annulus opposite an apical annulus and a series of rods that span between the basal annulus and the apical annulus to form a vase-shaped outer shell, and one or more contoured chambers formed between the outer shell and the inner membrane having a contour profile from a basal end to a apical end to surround the heart to selectively compress the heart to actively promote a contraction strain pattern characterized by non-inversion or lack of gross perturbation of the curvature on a diseased or damaged myocardium that promotes beneficial growth and remodeling of the myocardium; pressurizing selectively the direct cardiac compression device to compress the heart 1 during contraction without inverting or significantly perturbing the curvatures of the heart; and depressurizing selectively the direct cardiac compression device. - View Dependent Claims (13, 14, 15, 16)
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17. A method of promoting growth and remodeling of the myocardium comprising the steps of:
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positioning a direct cardiac compression device around the heart, wherein the direct cardiac compression device comprises; an outer shell comprising a basal annulus opposite an apical annulus and a series of rods that span between the basal annulus and the apical annulus to form a vase-shaped outer shell, and an inner membrane in contact with the outer shell having a basal end contoured to a apical end to surround the heart, one or more contoured chambers formed between the outer shell and the inner membrane to selectively compress the heart to actively promote a contraction strain pattern characterized by non-inversion or lack of gross perturbation of the curvature on a diseased or damaged myocardium that promotes beneficial growth and remodeling of the myocardium; pressurizing selectively the direct cardiac compression device to compress the heart 1 during contraction without inverting or significantly perturbing the curvatures of the heart; and depressurizing selectively the direct cardiac compression device.
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Specification