Jms Co., Ltd.

Mitsuru Kaneko

Noriaki Nakagawa

Aki Kitani

Tadashi Okiyama

Junya Fujii

Shogo Kamito

Kazuma Sunami

Shigeharu Yoshimura

A state detecting device can efficiently remove air bubbles from a liquid no matter whether the liquid flows forwards or backwards. The state detecting device () is provided in a tube to detect a state of a liquid flowing in the tube. The state detecting device () includes: a liquid hold part () in which the liquid is stored; an inflow part () from which the liquid enters the liquid hold part (); an outflow part () from which the liquid exits from the liquid hold part (); an inlet () that is a rear end portion of the inflow part (); and an outlet () that is a front end portion of the outflow part (). Here, the inlet () and the outlet () are arranged higher than a center of the liquid hold part () in a vertical direction when the state detecting device is provided in the tube.

State detecting device provided in a tube to detect a state of a liquid flowing in the tube

Provided is a pressure detection device capable of easy installation and removal of a sensor in/from a diaphragm, measurement of a pressure in a wide rage, and manufacture at a low cost while reducing a size. A sensor part (A) has: a magnet () being applied with a load produced by pressing of a diaphragm (); and a magnet cap () covering the magnet (). The diaphragm () has an intra-diaphragm magnetic body () buried therein. The intra-diaphragm magnetic body () has a protrusion part protruding from the diaphragm () so as to be in contact with the magnet (). The magnet cap () has an opening part enabling the protrusion part of the intra-diaphragm magnetic body () and the magnet () to be joined together.

Pressure detection device

A pressure detector having a pipe inner pressure receiving opening section comprising a fluid passage for transporting fluid and a diaphragm hermetically sealing an opening made in one side face of the fluid passage, and a pressure detecting section coupled with the pipe inner pressure receiving opening section through the diaphragm and detecting physical variation of the diaphragm, characterized in that the diaphragm is provided loosely at the opening, and the pressure detecting section comprises at least a pressure detector, a load transmitting means having one end connected with the diaphragm and the other end touching the pressure detector, and means for loading the pressure detector. Since a fluid being measured is not exposed directly to air, possibility of clogging the circuit with a blood clot can be reduced; and since a stress load on the diaphragm is reduced, irreversible creep deformation of the diaphragm can be prevented; thereby allowing the pressure detector to perform continuous measurement stably with high accuracy for a long time.

Pressure detector and pressure detecting method

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Hiroshima, Japan

Mitsuru Kaneko