Other

Junichi Kiyatake

Seiji Kojima

Katumi Tominaga

Kazuhide Yamazaki

A first sensor ( - ), the mounting position of the first sensor ( - ) being recognized as a counting number of instruction pulses to a pulse motor ( ), is arranged along a plate ( ) with slits of an encoder at a portion between a position where a pushing holder ( ) is connected to a plunger ( ) for the liquid infusion, and a start position where the pushing holder ( ) is separated from the plunger ( ). A counting means ( ) for counting encoder pulses from the encoder, is reset when a first sensor ( - ) is detected by a position detecting device ( ) moved together with the pushing holder ( ), and started to count the encoder pulses according to the movement of the pushing holder ( ). A time to complete the liquid infusion is calculated by using a distance between the position where the plunger ( ) is connected to the holder ( ) and a liquid infusion finish position proper to the syringe, and a predetermined liquid infusion speed.

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Saitama, Japan

Junichi Kiyatake