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US 12,728,256 B2Granted
Collapsing mechanical circulatory support device for temporary use
AssigneeTorvion Medical Inc.
InventorsTheodosios Alexander, Martin T. Rothman
Life of this patent
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Abstract
A temporary, removable mechanical circulatory support heart-assist device has at least two propellers or impellers. Each propeller or impeller has a number of blades arranged around an axis of rotation. The blades are configured to pump blood. The two propellers or impellers rotate in opposite directions from each other. The device can be configured to be implanted and removed with minimally invasive surgery.
Claims20
A mechanical circulatory support device comprising:
- a pair of contra-rotating impellers comprising a first impeller and a second impeller, the pair of contra-rotating impellers configured to fold for installation;
- a core shaft coupled to the first impeller;
- a peripheral shaft coupled to the second impeller;
- a first motor coupled to the core shaft;
- a second motor coupled to the peripheral shaft, wherein the first motor and the second motor are arranged coaxially, wherein the first motor and the second motor are contra-rotating;
- and
- an hourglass-shaped cage comprising an inlet section, a central waist section, and an outlet section, wherein the central waist section has a constant diameter when installed,
- wherein the first impeller and the second impeller are positioned within the central waist section of the hourglass-shaped cage when installed,
- wherein the constant diameter of the central waist section is less than a diameter of the inlet section when installed,
- wherein the constant diameter of the central waist section is less than a diameter of the outlet section when installed, and
- wherein the inlet section, the central waist section, and the outlet section are substantially coaxial when installed.
8 more elements
Dependencies are inferred from the claim text.