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    • 10. 发明授权
    • Respiratory apparatus and method for determining an optimal opening
pressure in a lung system
    • 用于确定肺系统中最佳开放压力的呼吸装置和方法
    • US5660170A
    • 1997-08-26
    • US651717
    • 1996-05-22
    • Govinda RajanBurkhard LachmannStephan Bohm
    • Govinda RajanBurkhard LachmannStephan Bohm
    • A61M16/00
    • A61M16/0051A61M16/00A61M2016/0039A61M2205/3344A61M2230/205
    • In an apparatus and method for determining an optimal opening pressure of a lung system a regulating unit delivers an inspiration pulse having an end pressure which is higher than the start pressure to the lung system. During the delivery of this inspiration pulse respiratory gas flow and pressure are measured by a measuring unit having a flow meter and a pressure gauge. The measured values are supplied to a control unit, in which measured flow and pressure are correlated and inflection points or regions in the flow-pressure-relation are identified. The highest pressure value related to an inflection point or region is defined as an interim opening pressure. By applying several different inspiration pulses, several interim opening pressures can be determined. An optimal opening pressure is found when a corresponding partial pressure of oxygen, measured in a blood gas analyzing unit, exceeds a predetermined threshold, or by selecting the interim opening pressure resulting in an optimal relation to the supplied volume of gas.
    • 在用于确定肺系统的最佳开启压力的装置和方法中,调节单元向肺系统传递具有高于起始压力的终止压力的吸气脉冲。 在该吸气脉冲输送期间,通过具有流量计和压力计的测量单元来测量呼吸气体的流量和压力。 将测量值提供给控制单元,其中测量的流量和压力相关,并且识别流量 - 压力关系中的拐点或区域。 与拐点或区域相关的最高压力值定义为临时开启压力。 通过应用几种不同的吸气脉冲,可以确定几个临时打开压力。 当在血液分析单元中测量的对应的氧分压超过预定阈值时,或通过选择产生与所供应的气体的最佳关系的临时开启压力,发现最佳开启压力。