Body fluid component measuring system

A body fluid component measuring system comprising:

• a sensor unit configured to be at least partially positioned indwelling in skin of a subject, the sensor unit configured to measure a predetermined body fluid component of an actual body fluid of the subject to obtain a measurement signal and to store calibration information;
• and
• a transmitting unit comprising a housing detachably attachable to the sensor unit and activated by a user, the transmitting unit configured to receive the measurement signal and the calibration information from the sensor unit in response to sending a measurement instruction to the sensor unit, to perform calculation of a concentration of the body fluid component in a body fluid which is either a same kind as the actual body fluid or a different kind from the actual body fluid, on a basis of the received measurement signal and the received calibration information, and to transmit a result of the calculation to a display device;
• wherein
• the sensor unit stores identifying information for establishing communication between the transmitting unit and the display device and the concentration of the predetermined body fluid component calculated by the transmitting unit and a measurement date and time of the component;
• the transmitting unit is configured to, when activated, transmit a request to the sensor unit to read the identifying information stored in the sensor unit and to establish communication with the display device using the read identifying information;
• and
• the system further comprises a second transmitting unit detachably attachable to the sensor unit in place of the transmitting unit and configured to receive from the sensor unit, upon replacing the transmitting unit, the concentration of the predetermined body fluid component calculated by the transmitting unit, the measurement date and time of the component, and the calibration information.

A method of measuring a body fluid component comprising:

• when activated, transmitting a request to read communication identification information stored in a sensor unit with a transmitting unit, the transmitting unit comprising a housing detachably mounted on the sensor unit;
• verifying, with the transmitting unit, that the communication identification information read from the sensor unit matches communication identification information in a display device to establish communication between the transmitting unit and the display device, the display device including a display which displays information;
• obtaining a body fluid sample of a subject which contains the body fluid component with a sensor unit;
• measuring, with the sensor unit, the body fluid component of the body fluid sample and sending, from the sensor unit to the transmitting unit, in response to the transmitting unit sending a measurement instruction to the sensor unit, measurement data indicating the measured body fluid component and calibration information;
• calculating, with the transmitting unit, a concentration of the body fluid component based on the measurement data from the sensor unit and the calibration information from the sensor unit;
• transmitting, with the transmitting unit, the calculated concentration of the body fluid component to the sensor unit and a measurement date and time of the component;
• storing, with the sensor unit, the calculated concentration of the body fluid component and the measurement date and time of the component;
• and
• detachably attaching a second transmitting unit to the sensor unit in place of the transmitting unit which receives from the sensor unit, upon replacing the transmitting unit, the concentration of the predetermined body fluid component calculated by the transmitting unit, the measurement date and time of the component, and the calibration information.