Magnetic and fluid velocity pressure mix suspending mechanical heart blood pump

A fluid dynamic pressure, artificial heart technology, applied in the field of blood pump, can solve the problems of artificial heart blood pump lubrication, blood damage, complex shape and other problems, and achieves the effect of simple structure, reduced chance of hemolysis, and small damage

Inactive Publication Date: 2008-08-20
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a magnetic force and fluid dynamic pressure mixed suspension artificial heart blood pump to solve the problems of artificial heart blood pump lubrication, complex shape, serious blood damage, etc.

Method used

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  • Magnetic and fluid velocity pressure mix suspending mechanical heart blood pump
  • Magnetic and fluid velocity pressure mix suspending mechanical heart blood pump
  • Magnetic and fluid velocity pressure mix suspending mechanical heart blood pump

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Embodiment Construction

[0017] Such as figure 1 As shown, the artificial heart blood pump disclosed by the present invention mainly includes an outer shell 7 and an inner shell 9. Both the outer shell 7 and the inner shell 9 are cylindrical and made of medical titanium alloy TC4. The outer casing 7 is set outside the inner casing 9 to form a sandwich, and the motor stator 8 is placed in the interlayer; one end of the outer casing 7 is sealed and connected with the inner casing 9 by an annular side plate, and the other end is sealed and connected with the inner casing 9 by an annular end cover 11. The inner shell 9 sequentially places the head support assembly 1 , the rotor assembly and the tail support assembly 15 , and the rotor assembly is supported between the head support assembly 1 and the tail support assembly 15 . Among them, the head support assembly 1 is composed of the head hemodynamic pressure suspension cone bearing 2 and the head guide vane 5, the head hemodynamic pressure suspension con...

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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 comprises a 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 arranged between 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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/10F04D13/02F04D29/00
Inventor 常宇乔爱科刘有军
Owner BEIJING UNIV OF TECH
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