Practical model for the navigation system applicable to low flow anesthesia.

麻醉机的操作控制是一项需要熟练操作的技术。除了自动控制之外，操作支持机构也是未来有用的技术。研究了麻醉机操作导航仪，并将其应用于低流量麻醉机。我们建立了导航仪的理论模型，并对导航仪的用户输入界面进行了研究，为了在实际应用中建立模型，我们介绍了麻醉机的以下三点。它包括用于麻醉回路的多个隔室，在CO_2吸收剂上的麻醉剂吸收隔室。将这些模型与考虑死腔和肺分流的体侧模型相连接，并应用于全封闭式麻醉机Physioflex的行为分析<TM>。并将该模型应用于麻醉气体监测仪RAMSCAN（Central uni Co，Tokyo，Japan）。并将模型预测值与实测值进行了比较。颈内静脉血药浓度比潮气末麻醉药浓度更接近脑内模拟值，另一方面，如果引入两种通用输入方法，则很容易满足麻醉过程中的必要输入项。一种是具有时间戳的事件类型输入的输入方法和没有时间戳的检查表类型的输入方法。已经理解，该输入方法具有高速输入能力，其也可以用于电子麻醉记录保持器。用Symlink ®开发了麻醉模拟器程序<TM>，用Visual Basic开发了输入程序QA 1，并对麻醉导航仪进行了试制研究，为麻醉导航仪的实用化作了进一步的研究。

The operation control of the anesthesia machine is a technology that requires skilling. Besides automatic control, the operation support mechanism is also useful as the technology in the future. We researched the navigator for the operation of anesthesia machine, by which the anesthesia machine for low flow was taken into consideration. We made a theoretical model for the navigator, and researched the user input interface for this navigator.To construct the model at a practical level, we introduced the following three points for the anesthesia machine. It includes multi-compartments for the anesthesia circuit, an anesthetic absorbing compartment on to the CO_2 absorbent. We connected the models with the body side model by which dead space and pulmonary shunt were considered.This model was used to analyze behavior of total closed type anesthesia machine, physioflex^<TM>. Moreover, this model was applied to anesthesia gas monitor RAMSCAN (Central uni Co, Tokyo, Japan). And we did the try compared with the model predict value and the measurement value. The concentration in the internal jugular vein was closer to the simulation value in the brain than the measurement of end-tidal anesthetic concentration.On the other hand, if two general input methods are introduced, it easily satisfies the necessary input items during anesthesia. One is an input method to the event type input having time stamp and an input method of the checklist type without the time stamp. It has been understood that this input method has the high-speed input ability that can be used also for the electronic anesthesia record keeper. Anesthesia simulator program by Symlink^<TM> and input program QA1 by Visual Basic were developed, and the research by which the navigator was made for trial purposes was done.We keep researching further for the practical use of the anesthetizing navigator.