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Magnetic suspension manual heart pump

An artificial heart and magnetic levitation technology, applied in medical science, suction devices, prostheses, etc., can solve the problems of non-active control, low integration, high failure rate, etc., and achieve the effects of pollution prevention, stable rotation speed and long life.

Inactive Publication Date: 2009-12-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of non-active control, poor reliability, thrombus, short life, high failure rate and low integration degree in the existing artificial heart pump, and provide a long life, high integration and strong portability. 5-DOF Magnetic Levitation Artificial Heart Pump

Method used

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  • Magnetic suspension manual heart pump
  • Magnetic suspension manual heart pump
  • Magnetic suspension manual heart pump

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Experimental program
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Embodiment Construction

[0018] A preferred embodiment of the present invention is described in detail in conjunction with the accompanying drawings as follows: This multi-purpose magnetic levitation artificial heart pump consists of a DC brushless synchronous motor, a blood isolation sleeve, a heart pump combined rotor, an axial permanent magnetic bearing, a radial sensor, and a radial electromagnetic bearing. , positioning ring and other components. Among them: DC brushless claw type pulsating synchronous stepping motor stator 9a, fixed magnetic coil 8a of permanent magnet bias active control radial electromagnetic bearing, fixed magnetic coil 4a of permanent magnet passive axial magnetic bearing, radial displacement sensor 6, 10, and heart pump isolation set 2 according to figure 1 and figure 2 After assembly, it is the fixed part of the centrifugal or axial flow heart pump respectively; while the rotor 9b of the DC brushless claw type pulsating synchronous stepping motor, the upper and lower per...

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Abstract

The invention relates to a magnetic levitation artificial heart pump. It includes a housing, a motor, a magnetic bearing and a blood pump impeller. The blood pump impeller, the motor rotor and the magnetic bearing rotating magnetic ring constitute a combined rotor and are placed in a blood flow isolation sleeve with a blood flow inlet and outlet. The motor stator, magnetic bearing The fixed magnetic coil and the radial displacement sensor form a combined stator and are placed on the outer ring of the blood isolation sleeve so as to be fixedly connected with the housing. The invention realizes the magnetic suspension support with the degree of freedom for the rotor, and works reliably, and adopts the blood isolation sleeve to prevent the heart pump from polluting the blood to the greatest extent. The invention has the advantages of compact structure, small volume, good integration, long service life and strong portability.

Description

technical field [0001] The invention relates to an artificial heart pump, in particular to a magnetic levitation artificial heart pump. Background technique [0002] At present, a variety of artificial hearts have been used clinically, most of which are centrifugal blood pumps of ventricular assist devices. These blood pumps have some problems, such as: non-active control, poor reliability, thrombus, hemolysis, short lifespan and other problems. In the patent document with application number 02109770.4, the blood pump radial bearing is a passive magnetic bearing, so the blood pump radial impact resistance and reliability are not as high as the active bearing, and the internal structure of the entire impeller, rotor, and coupling piece has too many dead angles , Increase the chance of thrombus generation, so the blood pump must have a certain failure rate, and the life span is also short. In the patent document with application number 200510005303.3, there are many dead spo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/12A61M1/10
Inventor 汪希平夏翠艳雷永锋江鹏楚云凌朱礼进
Owner SHANGHAI UNIV