Title:
流体制御装置および血圧計
Document Type and Number:
Japanese Patent JP6658958
Kind Code:
B2
Abstract:
A fluid control device includes a piezoelectric pump that includes a piezoelectric element and whose discharge pressure output varies depending on a drive frequency of the piezoelectric element, a self oscillation circuit that self-oscillates in accordance with a drive supply voltage and that drives the piezoelectric element at an oscillation frequency, and a control circuit that generates a control voltage. The oscillation frequency of the self oscillation circuit varies depending on the control voltage.
Inventors:
Kenjiro Okaguchi
Application Number:
JP2019505815A
Publication Date:
March 04, 2020
Filing Date:
February 22, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
A61B5/0225; B06B1/06; F04B45/047; H02N2/06
Domestic Patent References:
| JP2119984U | ||||
| JP2013220288A | ||||
| JP201187455A |
Foreign References:
| WO2016009869A1 | ||||
| WO2013084579A1 |
Attorney, Agent or Firm:
Kaede International Patent Office