Terumo Kabushiki Kaisha

Akihiko Yagi

Takahiro Souma

Makoto Hasegawa

An infusion state detection system includes: a pump unit configured to deliver a liquid in an infusion line; a pressure detector configured to detect a pressure in the infusion line; and a determination processing unit configured to: when the pressure detected by the pressure detector is at a predetermined value or above, stop driving of the pump unit for a stop period, and determine an infusion state on the basis of a value of the pressure detected by the pressure detector during the stop period.

Infusion state detection system

An extravasation detecting apparatus is provided which is capable of detecting at an early stage the dislodgment of a tip opening of a solution supplying tool from a blood vessel. The extravasation detecting apparatus includes: a fluid delivery unit which supplies a fluid medicine by repetitively performing operations of pressing and occluding a portion between a fluid medicine containing unit and a puncture site of an infusion tube, subsequently suctioning the fluid medicine from upstream using a restoring force of the infusion tube, and once again pressing and occluding the infusion tube to push out the fluid medicine toward downstream; a tube closing unit located upstream of the fluid delivery unit; and a blood detecting sensor which operates the tube closing unit during a solution supplying operation to generate negative pressure in a downstream infusion tube and which detects whether or not blood is being suctioned between the fluid delivery unit and the puncture site into the infusion tube from a punctured blood vessel.

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Kanagawa, Japan

Akihiko Yagi