| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method of the gas supply mechanism of an artificial respirator capable of preventing the practical delay of an inspiration supporting operation and supporting a highly similar respiratory operation to the respiratory efforts of a patient. SOLUTION: The point T<SB>onset</SB>of time of starting inspiration is detected and a compensation value H to be lowered with the lapse of time is generated. Then, on the basis of a compensation flow rate F<SB>H</SB>for which the compensation value H is added to a detected flow rate F, the target pressure Pin of a support gas is computed. Thus, the inspiration support operation by a gas supply servo mechanism is practically started from the point T<SB>onset</SB>of time of starting the inspiration and the practical delay of the inspiration support operation is prevented. Also, since the compensation value H is lowered with the lapse of time, after an initial period W<SB>H</SB>elapses in an inspiration period, the influence of the compensation value H included in a compensation flow rate value F<SB>H</SB>is reduced. By reducing the influence of the compensation value H in such a manner, the inspiration support operation is prevented from becoming excessive. COPYRIGHT: (C)2008,JPO&INPIT
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