Title:
PRESSURE DETECTION DEVICE FOR FLUID FLOW PATH
Document Type and Number:
WIPO Patent Application WO/2014/061770
Kind Code:
A1
Abstract:
[Problem] To provide a pressure detection device capable of suppressing sluggishness in fluid that has been caused to flow, capable of reducing the production cost and capacity of the fluid flow path, capable of suppressing errors that occur on the basis of individual differences between tubes to be squeezed or displacement detection means, and capable of more precise detection of fluid flow path pressure. [Solution] A pressure detection device for a fluid flow path, comprising: a displacement detection means (18) that detects displacement in the radial direction of a tube to be squeezed (1a); a pressure calculation means (20) capable of calculating removal blood pressure from said displacement; a closed flow path formation means capable of including an installation site for the displacement detection means (18) and of forming a closed flow path; a pressure alteration means capable of arbitrarily changing the pressure inside the closed flow path; a pressure detection means capable of detecting pressure changes inside the closed flow path; and a calibration curve acquisition means (26) capable of creating and obtaining a calibration curve for calibrating the displacement detection means (18) and the pressure calculation means (20) from the relationship between the pressure change detected by the pressure detection means and the detection value of the displacement detection means (18).
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Inventors:
AKITA KUNIHIKO (JP)
MATSUO SUMIAKI (JP)
MATSUO SUMIAKI (JP)
Application Number:
PCT/JP2013/078271
Publication Date:
April 24, 2014
Filing Date:
October 18, 2013
Export Citation:
Assignee:
NIKKISO CO LTD (JP)
International Classes:
F04C5/00; A61B5/0215; A61M1/14; F04B43/12
Foreign References:
| JP2011030880A | 2011-02-17 | |||
| JP2008289635A | 2008-12-04 | |||
| JP2009525770A | 2009-07-16 | |||
| JP2012192100A | 2012-10-11 | |||
| JP2010188170A | 2010-09-02 | |||
| JPH031290U | 1991-01-09 | |||
| JP2003265601A | 2003-09-24 |
Other References:
See also references of EP 2918838A4
Attorney, Agent or Firm:
KOSHIKAWA, TAKAO (JP)
Takao Koshikawa (JP)
Takao Koshikawa (JP)
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