Cost-Effective Magnetic Bearing System using a Single-Use Magnet-Less Rotor for an Extracorporeal Centrifugal Blood Pump

摘要：

Abstract: In the field of rotary blood pumps, contactless support of an impeller by a magnetic bearing has beenidentified as a promising method to reduce blood damage and enhance the durability. We have developed a two-degrees-of-freedom controlled magnetic bearing system without any permanent magnet in the impeller, sothat a single-use pump head of an extracorporeal centrifugal blood pump could be manufactured more easily at alow cost. A prototype blood pump with the magnetic bearing realized stable levitation and contactless rotation ofthe impeller. The run-out of the impeller position from 1,000 rpm to 3,000 rpm was less than 70 μm (3σ in theradial controlled directions. The total power consumption of the magnetic bearing was less than 1 W at the same rotational speeds. The pump could yield a flow rate of 5 L/min against a head pressure of 590 mmHg (78.7 kPa)at the speed of 4,000 rpm, which provided sufficient performance for an extracorporeal circulation support.

关键词： Cost-Effective Magnetic Bearing Magnet-Less Rotor Centrifugal Blood Pump Single-Use Pump Head

作者: Wataru Hijikata Taichi Mamiya Tadahiko Shinshi Setsuo Takatani

作者单位: Tokyo Institute of Technology, R2-38, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Japan Tokyo Medical and Dental University, 2-3-10 Surugadai, Kanda, Chiyoda-ku, Tokyo, Japan

会议类型: 国际会议

会议名称: The Twelfth International Symposium on Magnetic Bearings(第十二届国际磁悬浮轴承学术会议)

会议地点: 武汉

会议语种:英文

页码: 137-142

在线出版日期: 2010-08-22（万方平台首次上网日期，不代表论文的发表时间）