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Title:
CELL SUSPENSION ROTATING FLUIDIC PUMP
Document Type and Number:
WIPO Patent Application WO2004065544
Kind Code:
A3
Abstract:
A low pulsatility syringe pump including a duplex bearing set (218) rotatingly supporting a lead screw (216), and a transmission having a first drive train configured to increase a number of motor rotations required for a single rotation of the lead screw (216), and a second drive train configured to reduce the number of motor rotations required for a single rotation of the lead screw (216) as compared to the first drive train. Another embodiment also includes a motor (316) configured to rotate the syringe about its own axis, independent of the motion of the lead screw (216). In this other embodiment, the fluid in the syringe barrel includes objects (such as cells, latex beads, etc.) entrained in the fluid. The rate of rotation (e.g., about three revolutions per second) is chosen such that each object traces a substantially circular pathway in the syringe barrel and remains in suspension.

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Inventors:
HARUI NORIO (US)
CRAWFORD MICHAEL (US)
ESPOSITO RICHARD (US)
ORTYN WILLIAM (US)
Application Number:
PCT/US2004/001058
Publication Date:
May 12, 2005
Filing Date:
January 15, 2004
Export Citation:
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Assignee:
AMNIS CORP (US)
HARUI NORIO (US)
CRAWFORD MICHAEL (US)
ESPOSITO RICHARD (US)
ORTYN WILLIAM (US)
International Classes:
A61M5/00; B65B1/04; F04B9/02; F04B13/00; G01N15/14; G01N35/10; C12N; (IPC1-7): B65B1/04
Foreign References:
US5176646A1993-01-05
US5219099A1993-06-15
US5911252A1999-06-15
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