Lowe, Price, LeBlanc & Becker
Magnetically suspended type pump
 In a magnetically suspended type pump, an operating state of the pump can be obtained without using a pressure gauge and a flowmeter. In addition, in the case where the magnetically suspended type pump is applied to a blood pump, in order to reduce the number of connections in a flow path and to avoid thrombus formation, a correlation between current flowing in a motor and flow or a correlation between current flowing in the motor and pressure is obtained in advance, and the speed of rotation of motor is varied by a speed of rotation control circuit in response to an instruction from a CPU circuit, based on the obtained correlation between current and flow or between current and pressure, whereby flow or pressure is controlled. 
NTN Corporation
Y F A F A A G A G F A A A F A F G A A
Y10S F04D A61M F04D A61M A61M G05D A61M G01F F04D A61M A61M A61M F04D A61M F05B G05D A61M A61M
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Teruaki Hiroyoshi Tsugito
Akamatsu Ito Nakazeki