Endovascular permanent heart assist device
First Claim
1. An endovascular heart assist device, comprising:
- a wireless energy transfer apparatus which comprises an internal energy transfer unit being configured to be placed under the skin of a patient, and an external energy transfer unit being configured to be located outside the body of the patient and being configured to transfer electrical energy into the internal energy transfer unit wirelessly, wherein the internal energy transfer unit does not comprise an internal electronics and battery module; and
a brushless blood pump motor which comprises a stator and a rotor, wherein the stator comprises an electric coil being configured to receive the electrical energy from the internal energy transfer unit by wire or wirelessly, and the rotor is rotatively supported within the stator, configured to revolve freely with the propulsion received from the electrical coil, and the rotor comprises at least two helical propeller blades extending inside from sidewalls of the rotor, wherein the two helical propeller blades propel the blood in an artery;
wherein the endovascular heart assist device is installed in wide parts of root portions of main pulmonary artery and aorta after leaving a heart.
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Abstract
The invention is a heart assist device which has been developed in order to maintain the blood circulation in end-stage heart patients who do not respond to medical treatment, and it has been designed in size and shape so that it can be installed into the anatomically spacious root sections of the aorta and main pulmonary artery. With its small volume, and exceptional motor design without a shaft, the device, which contains a brushless, asynchronous and three-phase electric motor, will consume much less energy. The three-phase current required for the motor is provided from the power supply outside the body through the synchronous and wireless transmission of three phases. The invention is about a permanent endovascular cardiac support device which contains a three-phase, brushless, asynchronous electric motor, and the required energy is provided through the three-phase wireless power transmission from outside the body.
19 Citations
20 Claims
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1. An endovascular heart assist device, comprising:
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a wireless energy transfer apparatus which comprises an internal energy transfer unit being configured to be placed under the skin of a patient, and an external energy transfer unit being configured to be located outside the body of the patient and being configured to transfer electrical energy into the internal energy transfer unit wirelessly, wherein the internal energy transfer unit does not comprise an internal electronics and battery module; and a brushless blood pump motor which comprises a stator and a rotor, wherein the stator comprises an electric coil being configured to receive the electrical energy from the internal energy transfer unit by wire or wirelessly, and the rotor is rotatively supported within the stator, configured to revolve freely with the propulsion received from the electrical coil, and the rotor comprises at least two helical propeller blades extending inside from sidewalls of the rotor, wherein the two helical propeller blades propel the blood in an artery; wherein the endovascular heart assist device is installed in wide parts of root portions of main pulmonary artery and aorta after leaving a heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An endovascular heart assist device, comprising:
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a brushless blood pump motor which comprises at least two hollow and helical propeller blades without a pin (axis) in an inner wall of the brushless blood pump motor; at least one stator; at least one rotor fixed inside the at least one stator, wherein the rotor does not have a rotating shaft and the rotor is configured to rotate freely on a roller bearing; a magnetic bearing which is constructed by permanent magnetic bars and rings, wherein the magnetic bearing supports the roller bearing; and wherein the at least one stator configured to produce a magnetic field, wherein the magnetic field enables the rotation of the rotor; wherein the endovascular heart assist device is installed in wide parts of root portions of main pulmonary artery and aorta after leaving a heart. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification