公开(公告)号：EP1073844B1

公开(公告)日：2012-12-26

申请号：EP99921446.3

申请日：1999-04-22

申请人： University of Utah Research Foundation ,  Medquest Products, Inc. ,  UNIVERSITY OF VIRGINIA PATENT FOUNDATION

发明人： ALLAIRE, Paul, E. ,  BEARNSON, Gill, B. ,  FLACK, Ron ,  OLSEN, Don, B. ,  LONG, James, W. ,  KUMAR, B., Ajit ,  KHANWILKAR, Pratap, S. ,  DECKER, Jeffery ,  BALOH, Michael

IPC分类号： F04B17/03 ,  A61M1/10 ,  F16C32/04 ,  F16C39/06 ,  F04D29/048

CPC分类号： A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/12 ,  A61M1/122 ,  F04D13/0666 ,  F04D29/048 ,  F05B2200/23 ,  F16C32/0448 ,  F16C2316/18 ,  F16C2360/44

公开(公告)号：EP1073844A2

公开(公告)日：2001-02-07

申请号：EP99921446.3

申请日：1999-04-22

申请人： UNIVERSITY OF UTAH ,  Medquest Products, Inc. ,  University of Virginia

发明人： ALLAIRE, Paul, E. ,  BEARNSON, Gill, B. ,  FLACK, Ron ,  OLSEN, Don, B. ,  LONG, James, W. ,  KUMAR, B., Ajit ,  KHANWILKAR, Pratap, S. ,  DECKER, Jeffery ,  BALOH, Michael

IPC分类号： F04B17/03

CPC分类号： A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/12 ,  A61M1/122 ,  F04D13/0666 ,  F04D29/048 ,  F05B2200/23 ,  F16C32/0448 ,  F16C2316/18 ,  F16C2360/44

摘要： A pump for pumping sensitive fluids, such as blood, having no mechanical contact between the impeller and any other structure. The pump comprises a pump housing (4), an impeller (7) disposed within the pump housing, a magnetic bearing system (5, 6) for supporting and stabilizing the impeller (7) in five degrees of freedom, and a conformally shaped magnetically linked motor for rotating the impeller (7). The magnetic bearing system (5, 6) and motor advantageously comprise electromagnets and permanent magnets (18) for stability and control of the impeller (7) and to reduce size, weight and pump power consumption. Permanent magnets (18) and electromagnets are disposed on the pump housing (4) and permanent magnets (18) are disposed on the impeller (7) such that by controlling electric current through the electromagnets on the housing, the magnetically suspended impeller (7) functions as the rotor and the housing as the stator of a D.C. motor. The system advantageously allows for sensing of relative impeller position and dynamic properties without the need for additional sensors.