Wittmer, Maximilian

A blood pump is provided, that is configured to be disposed within the inferior vena cava (IVC). The blood pump may include a cannula having an inlet and an outlet, and an impeller configured to cause blood to flow through the cannula from the inlet towards the outlet. The inlet may be configured to be disposed at or near where the renal veins connect to the IVC. An occlusive balloon, anchor(s), and/or fixate(s) may be operably coupled to a surface of the cannula. A film may be coupled to anchor(s) and/or fixate(s), to restrict the flow of blood past the film. Restriction of blood flow around the cannula creates a pressure gradient between the inlet and outlet in the IVC, allowing for effective decongestion of the venous compartment distal of the inlet. The anchor(s) and/or fixate(s) may prevent vein collapse during operation due to increased negative pressures.

Disclosed is a blood pump rotor, and an intravascular blood pump that utilizes the rotor. The blood pump rotor is configured to rotate around an axis of rotation, and comprises a distal portion and a proximal portion. The distal portion includes a rotor hub, which tapers in a distal direction. The rotor hub has at least one blade extending outward from the rotor hub. Further, a distal end of said rotor hub extends distally beyond a most distal portion of the at least one blade. The proximal portion, which is connected to the distal portion, has permanent magnets arranged so as to form a Halbach array generating a magnetic field having a magnetic flux in a proximal direction that is greater than a magnetic flux in a distal direction, said first magnetic flux being greater than said second magnetic flux. The Halbach array comprises an alternating arrangement of axial magnetized magnets and circumferential magnetized magnets. At least one secondary blade is provided on a proximal surface of at least one circumferential magnetized magnet, wherein the at least one secondary blade extends axially in a proximal direction.

A method for generating a synthesis voice is provided, which is performed by one or more processors, and includes acquiring a text-to-speech synthesis model trained to generate a synthesis voice for a training text, based on reference voice data and a training style tag represented by natural language, receiving a target text, acquiring a style tag represented by natural language, and inputting the style tag and the target text into the text-to-speech synthesis model and acquiring a synthesis voice for the target text reflecting voice style features related to the style tag.

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