Patent ID: 8414515

Claim:
A blood reservoir comprising: a housing including an intracardiac blood inflow port configured to receive intracardiac blood aspirated from a patient's operative field, a liquid medicine injection port in an upper portion of the housing configured to receive a liquid medicine, and a blood outflow port at a lower end of the housing; a cardiotomy section arranged in the housing, the cardiotomy section including a filter that filters the intracardiac blood; and a conduit tube that communicates with the intracardiac blood inflow port and the liquid medicine injection port and allows the intracardiac blood from the intracardiac blood inflow port and the liquid medicine from the liquid medicine injection port to flow into the cardiotomy section, the conduit tube being inserted from above downward in the cardiotomy section, wherein a blood flow channel for flow of the intracardiac blood and a liquid medicine flow channel for flow of the liquid medicine are formed in separate flow passages in the conduit tube, a lower end of a blood conduit tube portion that forms the blood flow channel is located at a lower position than a lower end of a liquid medicine conduit tube portion that forms the liquid medicine flow channel, with respect to a vertical direction, and the lower end of the blood conduit tube portion and the lower end of the liquid medicine conduit tube portion are disposed in the cardiotomy section such that the intracardiac blood and the liquid medicine are mixed in the cardiotomy section after exiting from the blood conduit tube portion and the liquid medicine conduit tube portion, respectively, and before traveling through the filter.