Release date: 2009-06-08
Shandong University Magnetic Suspension Bearing Engineering Technology Research Center cooperated with Fuwai Cardiovascular Hospital of Chinese Academy of Medical Sciences. After one year of research, it successfully developed the first axial flow controllable magnetic suspension artificial heart pump prototype in China, which solved the axial flow magnetic suspension artificial The basic problem in the development of cardiac pump research.
In recent years, Shandong University has cooperated with Fuwai Cardiovascular Hospital to carry out a lot of research work on axial-flow magnetic suspension artificial heart pump, and made significant progress, including: a cardiac pump suspension system using a combination of permanent magnet suspension and electromagnetic suspension. Through structural optimization and parameter optimization, the advantages of permanent magnet suspension and electromagnetic suspension are perfectly combined, and the power consumption is low and the heat generation is small. Long-term continuous working experiments show that the temperature of the pump body does not exceed 33 °C at room temperature; the five-degree-of-freedom suspension of the rotor in any spatial azimuth angle is successfully realized, and the control of the suspension accuracy of the rotor below 10 μm is achieved. The interference ability is strong. When disturbed, it can be restored to the equilibrium position within 0.1s. The rotor displacement detection system suitable for the heart pump is developed. The radial displacement sensor is used to accurately measure the axial displacement of the rotor in the artificial heart pump. The problem of traditional sensors in contact with blood. The research work was funded by the National Support Program and the “863†Program.
Artificial heart pumps are one of the main ways to sustain life in patients with heart failure. The traditional artificial heart pump mainly uses mechanical bearings to support the rotor system, and has the disadvantages of easy wear, short life, easy to produce hemolysis and thrombus. The magnetic suspension artificial heart pump has reduced the damage to the blood due to no contact and friction, and is a hot spot in the research field of artificial heart pumps in the world. (health report)
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