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    • 3. 发明申请
    • DEVICE FOR INSUFFLATING GAS INTO A CAVITY IN A HUMAN OR ANIMAL BODY
    • DEVICE FOR气体吹入到体腔中的人或动物体
    • WO1997018848A1
    • 1997-05-29
    • PCT/DE1996002252
    • 1996-11-22
    • STORZ ENDOSKOP GMBHGORD, John, C.JONES, Eric, M.KRAFT-KIVIKOSKI, Jürgen
    • STORZ ENDOSKOP GMBH
    • A61M13/00
    • A61M13/003
    • The invention concerns a device for insufflating gas into a cavity in a human or animal body, said device comprising: a connection for a gas source; a measuring device comprising sensors for the actual gas pressure and the actual gas flow, the sensors being disposed outside the body cavity; and a control unit to which the output signals from the sensors are applied. The control unit controls a pressure regulator which reduces or regulates the pressure of the gas source to an adjustable insufflation pressure (nominal gas pressure) and a flow regulator which regulates the gas flow to an adjustable value (nominal gas flow). The device according to the invention is characterized in that, in order to calculate the pressure drop (Pdrop) between the location of the pressure sensor and the body cavity and hence the actual gas pressure (Pabd) in the body cavity (intraabdominal pressure) from the gas pressure (Pfill) measured outside the body cavity and the gas flow (Q) measured, the control unit uses piece-by-piece functions on the basis of which the calculated pressure drop (pdrop), as a function of Q, is less than or at most equal to the actual pressure drop; and in that the control unit continuously calculates the gas pressure (Pabd) in an event or time-controlled manner during normal insufflation and regulates insufflation on the basis of the calculated gas pressure (Pabd).
    • 描述了一种用于吹入气体引入人体或动物体的体腔,具有用于气体源,一个​​测量装置,用于实际的气体压力和设置在体腔外的实际气体流量传感器的连接,以及一 控制单元,针对所述传感器的输出信号,并且这降低了气体源的压力可设定的吹气压力(所需的气体压力)或调节压力调节器,和一个流量调节器,在可调节的值的气体流量(所需的气体流量) 调节,控制。 本发明的装置的特征在于,用于从所述体腔的气体压力P填充外面测得的和所测量的气体流量Q计算所述压力传感器的位置,并在体腔内,因此实际的气体压力P ABD在体腔(腹内压)之间的压力降PDROP控制单元 使用分段函数由于所计算出的压降PDROP为Q的函数小于或最多等于实际压降,并且,所述控制单元正常吹入和计算出的气体压力P ABD吹入的基础期间事件 - 和/或时间控制连续计算气体压力P ABD 调节。