A Study of Body Temperature Measurement Using the Zero-Heat-Flow Technique

零热流技术体温测量的研究

• 批准号: 62550300
• 负责人: TOGAWA Tatsuo
• 金额: $ 1.15万
• 依托单位: Institute for Medical and Dental Engineering
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550300/
• 关键词: Body temperature; Deep body thermometer; Sublingual temperature; Zero-heat-flow thchnique; 体温モニター; 深部温度; 執流補償法; ガリウム温度スタンダード

The deep body thermometer is an instrument for body temperature monitoring in which zero-heat-flow technique is employed. It was invented by Fox in 1971. improved by one of the investigator of this project (T.T.). and now spreading for post operative patient monitoring and many other applications. However. its ultimate accuracy has not been well studied. The project was planned to investigate the accuracy of the deep body thermometer. and also to provide a modification of the probe design. which is critical to the accuracy.The probe of the deep body thermometer was modified so that a slight positive feedback control was introduced to compensate the error due to a heat flow from the deep tissue to the ambient air detouring the probe. The performance of the probe was examined by 1) numerical analysis. 2) simulator experiment. and 3) measurements in volunteer subjects.As the results. it was shown by the numerical analysis and the simulator experiment that the modification in the probe design significantly reduces the measurement error. The subject study showed that the averaged differences between measured body temperatures by the modified probe and a sublingual thermistor probe remained within 0.1゜C in a room temperature of 20゜C and 25゜C.From these results. it was confirmed that the modification in the probe design could realize accuracy which satisfies most demands of clinical body temperature measurements.

深部体温计是一种采用零热流技术的体温监测仪器。它是由福克斯在1971年发明的。由该项目的一名调查员(T.T.)改进。现在正在推广用于术后患者监护和许多其他应用。然而。它的最终精度还没有得到很好的研究。该项目计划调查深部体温计的准确性。并且还提供了探头设计的修改。对深部体温计的探头进行了改进，引入了轻微的正反馈控制，以补偿由于从深部组织到环境空气的热流绕过探头而产生的误差。通过1)数值分析对探头的性能进行了检验。2)模拟器实验。3)志愿者的测量结果。数值分析和模拟器实验表明，改进后的探头设计大大减小了测量误差。研究表明，在20゜C和25゜C的室温下，改装的探头和舌下热敏电阻探头测量的体温之间的平均差值保持在0.1゜C以内。经验证，对探头设计的改进可以实现测量精度，满足临床体温测量的大部分要求。

项目成果

Togawa.T.: "Encyclopedia of Medical Devices and Instrumentations.Webster.J.G.ed." John Wiley ＆ Sons, 2765-2770 (1988)

Tokawa.T.：“医疗器械和仪器百科全书。Webster.J.G.ed。”John Wiley & Sons，2765-2770 (1988)

戸川達男: BME. 2. 156-160 (1988)

十川龙夫：BME。2. 156-160 (1988)

戸川達男: 小児看護. 10. 1163-1167 (1987)

十川龙夫：儿科护理。10. 1163-1167 (1987)

Togawa, T.: "Clinical thermometers" Jap. J. Child Nurs.10. 1163-1167 (1987)

Tokawa, T.：“临床温度计”日本。