ROTARY INFUSION PUMPS

Title:

ROTARY INFUSION PUMPS

Document Type and Number:

WIPO Patent Application WO/2011/119464

Kind Code:

A4

Abstract:

An infusion pump (110) includes a housing (112); a rotor (230) inserted into the housing, the rotor including a first ring (38a) of surfaces (236a) that form channels with the housing, and a second ring (38b) of surfaces (236b) that form channels with the housing, the second channel forming surfaces radially offset from the first channel forming surfaces; and a motor (40) operably engaged to rotate the rotor to cause the first and second channel forming surfaces to pump a flow of fluid, the radial offsetting of the second channel forming surfaces from the first channel forming surfaces dampening a pulsatility of the flow of fluid.

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Inventors:

DELCASTILLO JORGE A (US)
LIN RONGSHENG (US)
ZHU HONG (US)
DUDAR THOMAS E (US)

Application Number:

PCT/US2011/029145

Publication Date:

January 19, 2012

Filing Date:

March 21, 2011

Export Citation:

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Assignee:

BAXTER INT (US)
BAXTER HEALTHCARE SA (CH)
DELCASTILLO JORGE A (US)
LIN RONGSHENG (US)
ZHU HONG (US)
DUDAR THOMAS E (US)

International Classes:

A61M5/142; F04C2/356; F04C5/00; F04C11/00; F04C14/06

Attorney, Agent or Firm:

K&L GATES LLP et al. (P.O. Box 1135Chicago, Illinois, US)

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