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, poor reliability, etc., and achieve the effects of pollution prevention, stable speed and reliable operation

Inactive Publication Date: 2007-09-26
SHANGHAI UNIV
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  • Summary
  • Abstract
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  • Claims
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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 integra

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] Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

[0019] The multi-purpose magnetic levitation artificial heart pump is composed of DC brushless synchronous motor, blood isolation sleeve, heart pump combined rotor, axial permanent magnetic bearing, radial sensor, radial electromagnetic bearing, positioning ring and other components. Among them: DC brushless claw type pulsating synchronous stepper motor stator 9a, fixed magnetic coil 10a 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. After being assembled according to Fig. 1 and Fig. 2, the isolation sleeve 2 of the heart pump 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 permanen...

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Abstract

The invention relates to a magnetic suspension artificial heart pump, comprising a frame, a motor, a magnetic bearing and a blood pump blade wheel, wherein, the blood pump blade wheel, a motor rotor and a magnetic bearing rotary magnetic ring form a combined rotor to be mounted in a blood separating sheath with blood inlet and outlet, a motor stator, a fixed magnetic ring of the magnetic bearing and a radial displacement sensor combine a combined stator to be arranged at an outer ring of the blood separating sheath to be fixed with the frame. The invention realizes magnetic suspension on the rotor, with reliable operation, and uses blood separating sheath to avoid polluting blood from heart pump most. The invention has compact structure, small volume, better integration, long service life, and better transplant property.

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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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
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