Title:
【発明の名称】使い捨て式ポンプ作用ユニット
Document Type and Number:
Japanese Patent JP3012308
Kind Code:
B2
Abstract:
A disposable puming unit (12; 60; 86; 124) adapted to be releasably mounted on a magnetic drive device (14) for pumping biological fluid, such as blood. The pumping unit (12; 60; 86; 124) includes a pump housing (30 and 32); 62; 92; 128) enclosing a pumping chamber (P; 70), a bearing (42; 78B; 98, 152) supported in the pumping chamber (P; 70), and an impeller (44; 72, 90; 126) rotatably supported on the bearing (42; 78B; 98; 152). The impeller (44; 72; 90; 126) includes a plurality of openings configured to expose the bearing (42; 78B; 98; 152) to the fluid. Magnets or a magnetic ring (59; 82; 110; 158) are carried by the impeller (44; 72; 90; 126), and are adapted to be magnetically coupled with the magnetic drive device (14) to rotate the impeller (44; 72; 90; 126), and thereby pump fluid through the pumping unit (12; 60; 86; 124).
Inventors:
Earl Wayne Clausen
Lloyd Craiton Hubbard
Lloyd Craiton Hubbard
Application Number:
JP28693790A
Publication Date:
February 21, 2000
Filing Date:
October 24, 1990
Export Citation:
Assignee:
Minnesota Mining and Manyufu Acting Your Company
International Classes:
A61M60/117; A61M60/232; A61M60/419; A61M60/422; A61M60/806; A61M60/825; A61M60/827; A61M60/849; F04D5/00; F04D13/02; F04D29/04; F04D29/046; F04D29/62; (IPC1-7): A61M1/10
Domestic Patent References:
| JP1198556A | ||||
| JP2121035U |
Attorney, Agent or Firm:
Akira Asamura (3 outside)