Terumo Kabushiki Kaisha

Yusuke Yakushiji

Junichi Ogawa

Ogawa Junichi

A liquid medicine administration device is configured to reduce the load on the power supply at the start of use and includes: a drive mechanism that advances a plunger that pushes a liquid medicine from a liquid medicine container filled with the liquid medicine toward a distal end opening of the liquid medicine container; and a control unit that controls operation of the drive mechanism, in which the drive mechanism includes a motor that applies, to the plunger, a drive force for advancing the plunger, and an encoder that detects a rotation of the motor, and when driving the drive mechanism, the control unit starts the encoder after starting the motor.

Liquid medicine administration device

A power supply control circuit capable of achieving power saving. The power supply control circuit includes: a microcomputer that controls an operation of a control target; a power supply unit that supplies power to the microcomputer; a power switch that connects the power supply unit and the microcomputer; a bypass circuit that includes a MOSFET switch and is capable of bypassing the power switch to maintain connection between the power supply unit and the microcomputer; and a cut-off circuit that includes a MOSFET switch and is disposed between the bypass circuit and the microcomputer.

Power supply control circuit and drug solution administration apparatus including the power supply control circuit

A liquid medicine administration device includes: a cylinder filled with a liquid medicine, a gasket located inside the cylinder; an advancing mechanism configured to advance the gasket in a distal direction; a drive mechanism including a motor configured to drive the advancing mechanism; a battery configured to supply power to the motor; and a control unit configured to control a rotational speed of the motor. In a first movement period that is an initial sliding period included in an advancing movement of the gasket in the cylinder, a cycle including one continuous rotation and one continuous stoppage of the motor is repeated two or more times.

Growing community of inventors

Kanagawa, Japan

Yusuke Yakushiji