Method and Apparatus for Minimally Invasive Direct Mechanical Ventricular Actuation
First Claim
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1. A device for assisting the function of a heart in a body comprising:
- a. a cup-shaped shell having a wall with an outer surface and an inner surface, the wall extending from an apex of the shell to a rim;
b. a collapsible cage disposed within the cup-shaped shell, the cage having a plurality of struts extending along the inner surface of the shell; and
c. a liner comprising an outer surface, an inner surface, an upper region joined to the cup-shaped shell, an elastic central region, and a lower region joined to the cup-shaped shell forming a cavity between the liner and the shell.
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Abstract
Disclosed is a device for assisting the function of a heart that is collapsible to facilitate minimally invasive procedures. The cup-shaped device may be inserted into the chest cavity and deployed on the heart via a specially configured tube. The device comprises a cup-shaped shell expanded by a support cage disposed within the shell, and an elastic cup-shaped liner, together forming an inflatable cavity between the outer surface of the liner and the inner surface of the shell. Alternate application of positive and negative pressures to the cavity provides controlled, active, systolic and diastolic support to the heart.
125 Citations
28 Claims
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1. A device for assisting the function of a heart in a body comprising:
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a. a cup-shaped shell having a wall with an outer surface and an inner surface, the wall extending from an apex of the shell to a rim; b. a collapsible cage disposed within the cup-shaped shell, the cage having a plurality of struts extending along the inner surface of the shell; and c. a liner comprising an outer surface, an inner surface, an upper region joined to the cup-shaped shell, an elastic central region, and a lower region joined to the cup-shaped shell forming a cavity between the liner and the shell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28)
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25. A device for assisting the function of a heart in a body comprising:
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a. a cup-shaped shell having a wall with an outer surface and an inner surface, the wall extending from an apex of the shell to a rim; b. a collapsible cage disposed within the cup-shaped shell, the cage having a plurality of struts extending along the inner surface of the shell; c. a liner comprising an upper region joined to the rim of the cup-shaped shell, an elastic central region including an inflatable cavity, and a lower region joined to the cup-shaped shell; d. a first fitting in fluid communication with the interior of the cup-shaped shell; and e. a second fitting in communication with the inflatable cavity in the elastic central region of the liner.
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Specification