Department of Clinical Laboratory Science, Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan.
Med Eng Phys. 2010 Jan;32(1):1-6. doi: 10.1016/j.medengphy.2009.09.004. Epub 2009 Nov 10.
The conventional zero-heat-flow thermometer, which measures the deep body temperature from the skin surface, is widely used at present. However, this thermometer requires considerable electricity to power the electric heater that compensates for heat loss from the probe; thus, AC power is indispensable for its use. Therefore, this conventional thermometer is inconvenient for unconstrained monitoring. We have developed a new dual-heat-flux method that can measure the deep body temperature from the skin surface without a heater. Our method is convenient for unconstrained and long-term measurement because the instrument is driven by a battery and its design promotes energy conservation. Its probe consists of dual-heat-flow channels with different thermal resistances, and each heat-flow-channel has a pair of IC sensors attached on its top and bottom. The average deep body temperature measurements taken using both the dual-heat-flux and then the zero-heat-flow thermometers from the foreheads of 17 healthy subjects were 37.08 degrees C and 37.02 degrees C, respectively. In addition, the correlation coefficient between the values obtained by the 2 methods was 0.970 (p<0.001). These results show that our method can be used for monitoring the deep body temperature as accurately as the conventional method, and it overcomes the disadvantage of the necessity of AC power supply.
目前，广泛使用传统的零热流温度计从皮肤表面测量深部体温。然而，这种温度计需要相当多的电力来为补偿探头热损失的电加热器供电；因此，使用该温度计离不开交流电源。因此，这种传统的温度计在不受限制的监测方面并不方便。我们开发了一种新的双热流方法，可以在没有加热器的情况下从皮肤表面测量深部体温。我们的方法非常方便进行不受限制和长期的测量，因为仪器由电池驱动，其设计促进了节能。它的探头由具有不同热阻的双热流通道组成，每个热流通道的顶部和底部都有一对 IC 传感器。从 17 位健康受试者的额头上使用双热流和零热流温度计测量的平均深部体温分别为 37.08 度 C 和 37.02 度 C。此外，两种方法测量值之间的相关系数为 0.970（p<0.001）。这些结果表明，我们的方法可以像传统方法一样准确地监测深部体温，并且克服了对交流电源的需求的缺点。
