METHOD AND DEVICE FOR OBTAINING TIME FOR OPENING PARTIALLY OR PERFECTLY COLLAPSED LUNG AND VENTILATING DEVICE AND ITS USAGE METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a time for opening the lung of the patient by means of a new and more correct method and also to provide a method for obtaining the time for opening the lung of the patient, which is partially or perfectly collapsed. ;SOLUTION: Snapping sound is issued by supplying gas pressure in process for opening alveoli pulmonis. The snapping sound is heard through a microphone 6 so that a device 4 can obtain the time for perfectly opening the lung. The device 4 includes a filter 10 for taking-out a frequency in relation to snapping sound by filtering and a decision unit 12 for discriminating snapping sound based on sound taken-out by filtering and for obtaining the time when the lung is opened.;COPYRIGHT: (C)1998,JPO