US 11,116,959 B2 · Removable mechanical circulatory support for short term use

Abstract

Mechanical circulatory supports configured to operate in series with the native heart are disclosed. In an embodiment, an intravascular propeller is installed into the descending aorta and anchored within via an expandable anchoring mechanism. The propeller and anchoring mechanism may be foldable so as to be percutaneously deliverable to the aorta. The propeller may have foldable blades. The blades may be magnetic and may be driven by a concentric electromagnetic stator circumferentially outside the magnetic blades. The stator may be intravascular or may be configured to be installed around the outer circumference of the blood vessel. The support may create a pressure rise between about 20-50 mmHg, and maintain a flow rate of about 5 L/min. The support may have one or more pairs of contra-rotating propellers to modulate the tangential velocity of the blood flow. The support may have static pre-swirlers and or de-swirlers. The support may be optimized to replicate naturally occurring vortex formation within the descending aorta.

Claims20

Dependent claims

A temporary, removable mechanical circulatory support heart-assist device, the device comprising:

at least two propellers or impellers, each propeller or impeller comprising a plurality of blades arranged around an axis of rotation, the blades being configured to pump blood;
and
a gearbox,
wherein the gearbox is configured to receive input power and rotation from one input shaft, and provide output via two contra-rotating output shafts, the two contra-rotating output shafts configured to drive two propellers or impellers of the at least two propellers or impellers to rotate in opposite directions,
wherein the two propellers or impellers of the at least two propellers or impellers that rotate in opposite directions are both configured to pump blood in a first direction,
wherein the two propellers or impellers are shaped to reduce the vorticity of the flow downstream of the device when the two propellers or impellers rotate in opposite directions.

3 more elements

Dependencies are inferred from the claim text.

Removable mechanical circulatory support for short term use

Life of this patent

Removable mechanical circulatory support for short term use

Life of this patent

Abstract

Claims20