IMPLANTABLE ARTIFICIAL VENTRICLE HAVING LOW ENERGY REQUIREMENT
First Claim
1. An artificial ventricle, comprising(A) a pulsatile, positive-displacement blood pump comprising a biologically inert housing containinga hollow, flexible compliance chamber,an inlet valve for said compliance chamber, said inlet valve adapted to be operatively connected to a patient'"'"'s ventricular apex or atrial wall,an outlet valve for said compliance chamber, said outlet valve adapted to be operatively connected to the patient'"'"'s aorta or pulmonary artery;
- a plurality of contractile elements radiating outward from an apex of said compliance chamber, said elements being incorporated in and/or in contact with at least a portion of an outer surface of said compliance chamber, said contractile elements comprising an electroactive dielectric elastomer or an ion exchange membrane metallic composite, said contractile elements operatively connected to a common electrode, and(B) an implantable energy source operatively connected to said common electrode,wherein said electroactive dielectric elastomer is a member of the group consisting of polyaniline elastomers, polysulfone elastomers, polyacetylene elastomers, polypyrrole elastomers, polyvinylidene difluoride elastomers, silicone elastomers, and acrylic elastomers.
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Accused Products
Abstract
A pulsatile, positive-displacement mechanical circulatory support pump which can be used for assistance or replacement of one or both ventricles. The pump includes a plurality of contractile elements radiating outward from an apex of a compliance chamber, the elements being incorporated in and/or in contact with at least a portion of an outer surface of the compliance chamber. These contractile elements include an electroactive dielectric elastomer or an ion exchange membrane metallic composite. Application of electric field pulses from an implantable electrical energy source such as a pacemaker will cause the contractile elements to compress and expand the compliance chamber.
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Citations
21 Claims
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1. An artificial ventricle, comprising
(A) a pulsatile, positive-displacement blood pump comprising a biologically inert housing containing a hollow, flexible compliance chamber, an inlet valve for said compliance chamber, said inlet valve adapted to be operatively connected to a patient'"'"'s ventricular apex or atrial wall, an outlet valve for said compliance chamber, said outlet valve adapted to be operatively connected to the patient'"'"'s aorta or pulmonary artery; -
a plurality of contractile elements radiating outward from an apex of said compliance chamber, said elements being incorporated in and/or in contact with at least a portion of an outer surface of said compliance chamber, said contractile elements comprising an electroactive dielectric elastomer or an ion exchange membrane metallic composite, said contractile elements operatively connected to a common electrode, and (B) an implantable energy source operatively connected to said common electrode, wherein said electroactive dielectric elastomer is a member of the group consisting of polyaniline elastomers, polysulfone elastomers, polyacetylene elastomers, polypyrrole elastomers, polyvinylidene difluoride elastomers, silicone elastomers, and acrylic elastomers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification