Electromagnetic drive magnetic suspension nutation heart pump and use method thereof

Abstract

The invention provides an electromagnetic drive magnetic suspension nutation heart pump and a use method thereof. The electromagnetic drive magnetic suspension nutation heart pump comprises a pump body and a nutation disc, wherein the pump body is provided with a liquid inlet and a liquid outlet, and the nutation disc is arranged in the pump body. The nutation disc comprises a non-magnetic-conductive inner ring and a magnetic outer ring which are fixedly connected, and hemispherical magnets are arranged on the upper surface and the lower surface of the middle part of the non-magnetic-conductive inner ring. Hemispherical magnetic covers corresponding to the nutation periphery are arranged on the upper surface and the lower surface in the pump body. The hemispherical magnetic covers and the hemispherical magnets have the same magnetism. An electromagnetic drive device for driving the hemispherical magnets to deflect is arranged on the upper part of the pump body. A barrier mechanism is arranged at the position, between the liquid inlet and the liquid outlet, in the pump body. When the electromagnetic drive device drives the hemispherical magnets to deflect, the magnetic outer ring makes line contact with the inner surface of the pump body, and thus in cooperation with the barrier mechanism, and a fluid cavity in the pump body is separated into two zones. The electromagnetic drive magnetic suspension nutation heart pump is simple in structure, free of friction and low in noise and does not need lubrication, and the hemolysis and thrombosis probability and blood contamination caused by a cardiac assistant pump are lowered.

Description

technical field [0001] The invention relates to an electromagnetically driven magnetic levitation nutating heart pump and its application method. Background technique [0002] The heart pump is a key component of a ventricular assist device. Common heart pumps are mainly divided into rotary (vane) type and volumetric type. The rotary pump relies on the rotation of the impeller in the casing, and realizes the conversion of energy through the change of fluid dynamic parameters, thereby generating continuous flow of blood. Since the pump rotates at a high speed, the blades will generate a great mechanical shear to the blood cells, resulting in hemolysis and thrombus formation. The volumetric blood pump works on the liquid through the change of volume to increase its energy, and realizes the directional flow of blood through the function of the one-way valve. The biggest disadvantage of volumetric heart pumps is that they are bulky, difficult to implant, and susceptible to inf...

AI Technical Summary

Problems solved by technology

[0003] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that the biggest disadvantage of the existing heart pump is that it is bulky, difficult to implant, and susceptible to infection, and the thrombus and hemolysis are also relatively serious.

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