Patent ID: 8500673

Claim:
A perfusion system comprising: a heart lung machine; a blood reservoir adapted to hold a fluid, the blood reservoir having a capacity determined by a geometric configuration, wherein the blood reservoir includes an RFID tag that includes information describing the geometric configuration of the blood reservoir; a blood level sensor secured to the blood reservoir, the level sensor configured to determine a fluid level within the blood reservoir; a controller coupled to the heart lung machine; an RFID receiver coupled to the controller, the RFID receiver configured to communicate with the RFID tag and receive from the RFID tag information describing the geometric configuration of the blood reservoir, the controller configured to receive the fluid level from the blood level sensor and the information describing the geometric configuration of the blood reservoir from the RFID receiver, the controller configured to calculate a blood volume contained within the blood reservoir based on the fluid level and the geometric configuration; a display coupled to the heart lung machine, the display configured to display the calculated blood volume; wherein the heart lung machine is configured to adjust an operating parameter based on the calculated blood volume.