Title:
A blood-pressure information measuring device provided with a piezo-electric pump and this
Document Type and Number:
Japanese Patent JP5928160
Kind Code:
B2
Abstract:
A piezoelectric pump is provided with an actuator containing a piezoelectric element and a vibrating sheet; a first diaphragm, positioned opposite the actuator, with a first connecting hole provided therein; a pump chamber formed by the space between the actuator and the first diaphragm; and a second diaphragm positioned opposite the first diaphragm. The part of the second diaphragm opposite the first connecting hole is provided with an opposing wall portion that prevents a fluid that has been introduced into the pump chamber via the first connecting hole from flowing back towards a suction side via the first connecting hole.
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Inventors:
Yoshihiko Sano
Toshihiko Ogura
Tatsuya Kobayashi
Yuki Yamashita
Yuki Doi
Wataru Tsunoda
Toshihiko Ogura
Tatsuya Kobayashi
Yuki Yamashita
Yuki Doi
Wataru Tsunoda
Application Number:
JP2012121794A
Publication Date:
June 01, 2016
Filing Date:
May 29, 2012
Export Citation:
Assignee:
OMRON HEALTHCARE Co., Ltd.
International Classes:
F04B45/047; A61B5/022
Domestic Patent References:
| JP2007198147A | ||||
| JP11311184A |
Foreign References:
| WO2011145544A1 | ||||
| WO2009145064A1 |
Attorney, Agent or Firm:
Fukami patent office