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专利名称：System and method for exploration of the
intrathoracic ventilatory mechanism
发明人：Daniel Ernest Louis Bargeton,P. Vaida,G.
Vardon
申请号：US05/579971申请日：19750522公开号：US04005702A公开日：19770201
摘要：The invention relates to a system and method for the exploration of theintrathoracic ventilatory mechanism which employs a signal y formed according to theequation: ##EQU1## IN WHICH V is the volume displaced in the mouth, dV/dt is the firstderivative of V with respect to the time, Pp is the pleural pressure given by anoesophageal gas-bag, and &lgr;. sub.1, &lgr;.sub.2, &lgr;.sub.3 are three adjustableparameters. The signal y is displayed on an oscilloscope as a loop which is a function ofthe volume V, and potentiometers corresponding to &lgr;. sub.1, &lgr;.sub.2, &lgr;.sub.3are adjusted to determine the value of the parameters. First, the potentiometers for&lgr;.sub.2 are adjusted to cause the loop to close in a straight line, then thepotentiometers for &lgr;.sub.1 are adjusted until this straight line is horizontal, andsubsequently the potentiometers for &lgr;.sub.3 are adjusted until this straight line liesover the x axis. Therefore the values given to the parameters are &lgr;.sub.2 = Rintrathoracic resistance, &lgr;.sub.1 = E intrathoracic elastance, and &lgr;.sub. 3 = E(Vo -Vr) where Vo is the pulmonary volume at the beginning of the inhalation and Vr therelaxation volume.
申请人：INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICAL
代理机构：Craig & Antonelli
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