Terumo Kabushiki Kaisha

Satoshi Inoue

Fumiaki Inaba

A blood collecting apparatus includes a measuring device provided with a sensor for measuring the amount of collected blood when blood is collected into a blood container, and a controller for calculating the amount of collected blood based on an output y of the measuring sensor. The output y is a function of an n-times measured weight w of collected blood such that y=aw+b, wherein a and b are constants characteristic of the measuring sensor. The controller detects the output yi of the measuring sensor in n+1 units of respective known amounts wi of collected blood, and corrects the constants a and b on the basis of such detected data. The controller, moreover, automatically detects the output yO of the measuring sensor every predetermined cycle in a state where the measured weight w of collected blood is zero, and corrects the constant b of the function y=aw+b on the basis of such detected output yO.

Blood collecting apparatus

Apparatus for collecting blood includes a control device for starting the action of collecting blood into a continuously or intermittently vibrated blood container, to receive a measured collected blood amount and data of a set amount of blood to be collected into the blood container, and also a vibration stoppage reference time during which the vibration of the blood container is stopped at a blood collection terminating stage so as to calculate, at a midway stage of the blood collection, the amount of blood yet to be collected and the blood collecting speed allowed by the current donor, to calculate, on the basis of the calculated blood collection speed, the yet-to-be-collected blood collecting time that corresponds to the amount of blood yet to be collected. The control device maintains the stoppage of vibration of the blood container on the condition that the yet-to-be-collected blood collecting time has become not more than the vibration stoppage reference time, and causes a stopping of collecting blood into the blood container on the condition that the measured collected blood amount, measured in the stoppage condition, has reached the set blood collection amount.

A blood sample collecting device includes a vacuum blood sampling chamber having a blood container disposed therein, and a vacuum pump for evacuating the vacuum blood sampling chamber to collect a blood sample into the blood container under a vacuum developed in the vacuum blood sampling chamber. The amount of collected blood in the blood container, and the vacuum in the vacuum blood sampling chamber is lowered below a preset pressure on the condition that a rate of increase in the measured amount of collected blood does not reach a predetermined normal rate of increase.

Growing community of inventors

Fujinomiya, Japan

Satoshi Inoue