Magnetic and fluid velocity pressure mix suspending mechanical heart blood pump

A fluid dynamic pressure and artificial heart technology, applied in the field of blood pumps, can solve the problems of blood destruction, artificial heart blood pump lubrication problems, complex shapes, etc., and achieve the effect of reducing the chance of hemolysis, simple structure, and small damage
CN101244296BInactive Publication Date: 2010-06-16BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2010-06-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a blood pump for assisting blood flow in the heart, in particular to an artificial heart blood pump with magnetic and fluid dynamic pressure hybrid suspension, which comprisesa casing 7 sleeved on an inner shell 9; wherein the casing comprises a motor stator 8 and the inner shell 9 comprises a head support component 1, a rotor component and a rear support component 15. The blood bump is characterized in that the rotor component, the head support component 1 and the rear support component 15 are arranged in the cylindrical inner shell 9; the rotor component is arrangedbetween the head support component 1 the rear support component 15; wherein a head blood dynamic pressure suspension cone bearing 2 is positioned at the central head support component 1; the rotor component comprises a head blood dynamic pressure suspension cone 3, an impeller 6, a rear permanent magnet bearing inner ring 10 and a rear blood dynamic pressure suspension cone 13 in series; a rear blood dynamic pressure suspension cone bearing 14 is arranged at the central rear support component 15 and a rear permanent magnet bearing external ring 12 is embedded on the outside of the bearing. The blood pump has the advantages of low shearing force of the blood, less damage to blood erythrocytes and decreased hemolysis.
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Description

technical field

[0001] The invention relates to a blood pump for assisting blood flow in the heart, in particular to an artificial heart blood pump which is suspended by mixing magnetic force and fluid dynamic pressure. Background technique

[0002] Artificial hearts mainly include ventricular auxiliary blood pumps and total artificial hearts. From the principle of blood pumping, there are mainly impeller pumps and pulsating pumps. Because the impeller blood pump has the characteristics of small size and high efficiency, the impeller blood pump is currently a research hotspot of the artificial ventricular assisting therapy device. For traditional impeller pumps, since the lubrication and sealing of rotating parts affect the life and blood compatibility of the blood pump, the main popular solutions in the world at this stage are to use non-lubricated bearings, magnetic levitation rotors or liquid floating rotors. However, such as the external bearing type artificial heart bl...

Claims

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