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Title:
VOLUMETRIC PUMP
Document Type and Number:
Japanese Patent JP2007162709
Kind Code:
A
Abstract:

To provide an inexpensive volumetric pump capable of purging bubbles from a pump chamber, easy of accurate flow control and suitable for an IV filling set.

The volumetric pump comprises a slender chamber 8 inside and a housing open at one end and closed at the other end. An elastic material sheet open at the center covers the opening end. A pump shaft 60 is inserted through the opening of the sheet into the chamber to form a sphincter seal in the opening in cooperation with the sheet material. The other end extends to the outside. The opening has a cross section shape substantially the same as that of the shaft and a cross section size the same as or smaller than that thereof. A fluid inlet 36 is provided near the opening end of the housing so that fluid is supplied from a fluid source into the chamber 8. A fluid outlet 40 is provided near the closed end of the housing so that the fluid is supplied through the outlet from the chamber 8 to a fluid sink.


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Inventors:
JACOBSEN STEPHEN C
DAVIS CLARK C
Application Number:
JP2007066012A
Publication Date:
June 28, 2007
Filing Date:
March 15, 2007
Export Citation:
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Assignee:
SARCOS GROUP
International Classes:
F04B17/04; A61M5/142; F04B53/06; F04B3/00; F04B7/00; F04B9/02; F04B9/04; F04B17/00; F04B17/03; F04B49/12; F04B53/02; F04B53/16; F16K41/12; H01F7/02
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Yukio Iwamoto
Toru Mori