Title:
静脈点滴室内の液滴サイズを測定するための装置および方法
Document Type and Number:
Japanese Patent JP2004513710
Kind Code:
A
Abstract:
A capacitive-based apparatus for measuring the volume of a fluid drop passing through an intravenous drip chamber. The apparatus includes a capacitor comprising two parallel plates that are a fixed distance apart and are positioned such that the fluid flow path in the drip chamber is between them. The fluid drop moving through the drip chamber between the plates causes the capacitance of the plates to change. This change in capacitance is measured and from it, the volume of the drop is calculated. The volumes of a series of drops are integrated to provide a measured rate of flow through the drip chamber. This measured rate of flow is compared to the programmed rate of flow and the difference is used to adjust a flow control device to obtain the desired rate of flow. The measured flow rate is also displayed.
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Inventors:
Brown, Houston
Burns, William, Sea
Burns, William, Sea
Application Number:
JP2002542453A
Publication Date:
May 13, 2004
Filing Date:
November 20, 2001
Export Citation:
Assignee:
Araris Medical Systems, Inc.
International Classes:
G01F1/56; A61M5/168; (IPC1-7): A61M5/168; G01F1/56
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Yukio Iwamoto
Yutaka Yoshida
Hajime Asamura
Yukio Iwamoto
Yutaka Yoshida