Ventricular cuff
First Claim
Patent Images
1. A method comprising:
- attaching a cuff to a heart, the cuff comprising a sewing ring having a fabric material internally supported by an insert, and wherein the insert is configured to support the fabric material so as to increase a rigidity of the cuff such that at least a portion of a myocardium of the heart is flattened by the attaching;
forming an opening in the myocardium;
positioning an inflow cannula of a blood pump through a central opening in the cuff and into the opening in the myocardium; and
attaching the blood pump to the cuff;
wherein attaching the cuff to the heart causes at least a portion of the myocardium to flatten, and comprises conforming the myocardium to a shape of the cuff;
wherein a flexural modulus of the sewing ring is greater than 50 psi.
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Accused Products
Abstract
In one general aspect, a cuff for attachment to a heart includes an attachment component configured to engage a blood pump to attach the cuff to the blood pump and a sewing ring for attachment to the heart. The sewing ring is coupled to the attachment component, and the attachment component and the sewing ring each define a central opening configured to admit an inflow cannula of a blood pump. The sewing ring comprises a member that provides rigidity to flatten a portion of a myocardium of the heart when the cuff is attached to the heart.
100 Citations
31 Claims
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1. A method comprising:
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attaching a cuff to a heart, the cuff comprising a sewing ring having a fabric material internally supported by an insert, and wherein the insert is configured to support the fabric material so as to increase a rigidity of the cuff such that at least a portion of a myocardium of the heart is flattened by the attaching; forming an opening in the myocardium; positioning an inflow cannula of a blood pump through a central opening in the cuff and into the opening in the myocardium; and attaching the blood pump to the cuff; wherein attaching the cuff to the heart causes at least a portion of the myocardium to flatten, and comprises conforming the myocardium to a shape of the cuff; wherein a flexural modulus of the sewing ring is greater than 50 psi. - View Dependent Claims (2, 3, 4, 5, 6, 21, 22, 23, 24, 26, 27, 28)
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7. A method of attaching a blood pump to a heart, the method comprising:
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attaching a cuff to an outer surface of a myocardial wall of the heart; wherein attaching the cuff to the heart causes at least a portion of the myocardial wall of the heart to flatten in a manner such that a geometry of the myocardial wall contacting a region of the cuff is flatter than a natural geometry of the myocardial wall; positioning an inflow cannula of the blood pump relative to the cuff; and coupling the blood pump to the cuff, wherein the flattening limits inflow cannula malposition; wherein flattening comprises conforming the myocardial wall to a shape of the cuff, the cuff comprising a rigid sewing ring; wherein a flexural modulus of the sewing ring is greater than 50 psi. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 29, 30, 31)
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25. A method comprising:
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attaching a cuff to a heart, the cuff comprising a fabric material supported by an insert, and wherein the insert is configured to support the fabric material so as to increase a rigidity of the cuff such that attaching the cuff to the heart causes at least a portion of a myocardium of the heart contacting a region of the cuff to conform to a shape of the cuff; forming an opening in the myocardium; positioning an inflow cannula of a blood pump through a central opening in the cuff and into the opening in the myocardium; and attaching the blood pump to the cuff; wherein the insert comprises an inner perimeter, an outer perimeter and a plurality of extensions that extend radially between the outer perimeter and the inner perimeter.
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Specification