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US 11,628,292 B2Granted
Removable mechanical circulatory support for short term use
OwnerTheodosios Alexander, Martin T. Rothmaninventors
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 pump head comprising a pair of contra-rotating impellers positioned within a central waist section of an hourglass-shaped cage,
- wherein an inlet of an inlet section of the hourglass-shaped cage and an outlet of an outlet section of the hourglass-shaped cage are configured to accommodate varying diameters, and wherein the inlet of the hourglass-shaped cage and the outlet of the hourglass-shaped cage are configured to be secured against an inside wall of blood vessels of various diameter sizes,
- wherein the central waist section has a constant diameter when the inlet of the hourglass-shaped cage and the outlet of the hourglass-shaped cage are secured against the inside wall, thus the inlet and the outlet accommodate blood vessels of various diameter sizes with one size of the central waist section of the hourglass-shaped cage and the pump head comprising the pair of contra-rotating impellers.
A mechanical circulatory support device, comprising:
- a pump head positioned within a central waist section of an hourglass-shaped cage,
- wherein an inlet of an inlet section of the hourglass-shaped cage and an outlet of an outlet section of the hourglass-shaped cage are configured to accommodate varying diameters, and wherein the inlet of the hourglass-shaped cage and the outlet of the hourglass-shaped cage are configured to be secured within blood vessels of various diameter sizes,
- wherein the central waist section has a constant diameter when the inlet of the hourglass-shaped cage and the outlet of the hourglass-shaped cage are secured, thus the device is configured to accommodate blood vessels of various diameters with one size of central waist section of the hourglass-shaped cage and the pump head, wherein the central waist section of the hourglass-shaped cage comprises a memory-alloy frame covered with biocompatible material non-permeable to blood, wherein the whole length of the hourglass-shaped cage is collapsible along its axis,
- wherein the pump head comprises at least one pair of contra-rotating blade rows.
1 more element
Dependencies are inferred from the claim text.