Monitoring device and monitoring method

1. A monitoring device which measures numerical value information on a subject substance in a body fluid, said device comprising:

an electrochemical sensor including a sensor unit for detecting the subject substance which is configured to be used in the way of being embedded subcutaneously and generating an electric signal correlating to the numerical value information on the subject substance; and

a temperature control unit including a temperature sensor which measures a temperature correlating to a detected ambient temperature defined as a temperature ambient to said sensor unit and a temperature adjusting element which adjusts the detected ambient temperature, and adjusting the detected ambient temperature so as to reach a target setting temperature when measuring the subject substance by controlling an operation state of said temperature adjusting element on the basis of the temperature measured by said temperature sensor.

2. A monitoring device according to claim 1 , further comprising a sensor control unit which controls said electrochemical sensor.

3. A monitoring device according to claim 2 , wherein said sensor control unit further calculates numerical value information on the subject substance on the basis of an electric signal generated by said electrochemical sensor.

4. A monitoring device according to claim 1 , wherein said temperature control unit adjusts the detected ambient temperature so as to reach a standby target setting temperature that is set lower than the target setting temperature when standing by for measuring the subject substance.

5. A monitoring device according to claim 1 , wherein said temperature control unit acquires first numerical value information defined as the numerical value information on the subject substance measured by use of said electrochemical sensor and second numerical value information defined as the numerical value information on the subject substance measured by a second monitoring device in a way that uses a body fluid sampled in vitro from an examinee, and changes, if a difference between the first numerical value information and the second numerical value information exceeds a predetermined first threshold value, a setting value of the target setting temperature when measuring the subject substance.

6. A monitoring device according to claim 1 , wherein said temperature control unit adjusts the detected ambient temperature so as to reach a standby target setting temperature set lower than the target setting temperature when standing by for measuring the subject substance, then acquires first numerical value information defined as the numerical value information on the subject substance measured by use of said electrochemical sensor and second numerical value information defined as the numerical value information on the subject substance measured by a second monitoring device in a way that uses the body fluid sampled in vitro from the examinee, and changes, if the difference between the first numerical value information and the second numerical value information exceeds a predetermined second threshold value, a setting value of the standby target setting temperature, on a low-temperature side, when standing by for measuring the subject substance.

7. A monitoring device according to claim 1 , wherein said temperature control unit acquires, with respect to first numerical value information defined as the numerical value information on the subject substance measured by use of said electrochemical sensor and second numerical value information defined as the numerical value information on the subject substance measured by a second monitoring device in a way that uses the body fluid sampled in vitro from the examinee, each of the numerical value information corresponding to first timing after said monitoring device has started the measurement and the numerical value information corresponding to second timing that traces back to just a predetermined period from the first timing, and changes, if a difference between the second numerical value information at the first timing and the second numerical value information at the second timing is within a predetermined third threshold value and if a difference between the first numerical value information at the first timing and the first numerical value information at the second timing exceeds a predetermined fourth threshold value, a setting value of the target setting temperature when measuring the subject substance.

8. A monitoring device according to claim 1 , wherein said temperature control unit acquires, with respect to first numerical value information defined as the numerical value information on the subject substance measured by use of said electrochemical sensor and second numerical value information defined as the numerical value information on the subject substance measured by a second monitoring device in a way that uses the body fluid sampled in vitro from the examinee, each of the numerical value information corresponding to first timing after said monitoring device has started the measurement and the numerical value information corresponding to second timing that traces back to just a predetermined period from the first timing, then adjusts the detected ambient temperature so as to reach a standby target setting temperature that is set lower than the target setting temperature when standing by for measuring the subject substance, and changes, if an elapse period reaching the first timing since the start of the measurement exceeds a predetermined reference period, a setting value of the standby target setting temperature, on the low-temperature side, when standing by for measuring the subject substance.