US 2021/0260358 A1 · MECHANICAL CIRCULATORY SUPPORT DEVICE WITH AXIAL FLOW TURBOMACHINE OPTIMIZED FOR HEART FAILURE AND CARDIO-RENAL SYNDROME BY IMPLANTATION IN THE DESCENDING AORTA

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.

Claims57

Dependent claims

A mechanical circulatory support for assisting the heart, the support comprising:

at least one propeller, the at least one propeller comprising a plurality of blades arranged around an axis of rotation, the blades being configured to pump blood in a substantially axial direction parallel to the axis of rotation, wherein at least one of the plurality of blades is magnetic;
a shaft aligned along the axis of rotation of the at least one propeller;
an anchoring mechanism, the anchoring mechanism being configured to anchor the at least one propeller within a lumen of a blood vessel, the anchoring mechanism comprising:
a proximal hub coupled to a proximal end of the shaft;
a distal hub coupled to a distal end of the shaft;
a collapsed configuration for installing the anchoring mechanism in the blood vessel;
and
an expanded configuration wherein at least a portion of the anchoring mechanism is configured to be pressed against a wall of the lumen of the blood vessel;
and
at least one ring-shaped stator comprising one or more electromagnets positioned around the circumference of the stator, wherein the at least one stator is configured to be positioned concentrically around the blades of the at least one propeller to electromagnetically drive rotation of the at least one magnetic blade.

7 more elements

Dependencies are inferred from the claim text.

Mechanical circulatory support device with axial flow turbomachine optimized for heart failure and cardio-renal syndrome by implantation in the descending aorta

Life of this patent

Mechanical circulatory support device with axial flow turbomachine optimized for heart failure and cardio-renal syndrome by implantation in the descending aorta

Life of this patent

Abstract

Claims57