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Patent Searching and Data


Title:
SYRINGE PUMP
Document Type and Number:
Japanese Patent JP2019074016
Kind Code:
A
Abstract:
To prevent liquid discharge from being made unstable by containing air bubbles in a liquid that fills a filling chamber in a syringe pump.SOLUTION: In a syringe pump, a liquid T filling a filling chamber 10 between one-side bottom wall 7 of a cylinder 3 and a piston 4 through a filling path 23 is discharged from the filling chamber 10 through a discharge path 20 by sliding the piston 4 closer to the one-side bottom wall 7. The syringe pump comprises control means 38 by which, in a state where flow-out of the liquid T from the filling chamber 10 is blocked after the filling chamber 10 is filled with the liquid T, the piston 4 is slid closer to the one-side bottom wall 7 just for a predetermined moving amount (e) for pressurization by pressing the piston using a piston rod 5 and a pressure change of the liquid T in the filling chamber 10 at that time is detected, such that it is discriminated due to the detection information whether the liquid T in the filling chamber 10 contains air bubbles.SELECTED DRAWING: Figure 5

Inventors:
NODA SHOGO
MACHIDA TAKEO
Application Number:
JP2017200287A
Publication Date:
May 16, 2019
Filing Date:
October 16, 2017
Export Citation:
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Assignee:
TAIKISHA KK
International Classes:
F04B13/00
Domestic Patent References:
JP2014224517A2014-12-04
JP2014529742A2014-11-13
JP2008180182A2008-08-07
JP2012031817A2012-02-16
Attorney, Agent or Firm:
Patent business corporation r&c