ANESTHESIA VENTILATOR WITH AUTOMATIC CONTROL OF THE SELECTED VENTILATION MODE

摘要

P The invention relates to an anesthesia machine of the type with several ventilation modes comprising a main circuit (1) of gas formed by an inspiratory branch (1a) and an expiratory branch (1b); a gas accumulation member (4) whose internal volume varies and communicates with the main circuit (1) and means with relief valve (6) with adjustable reference pressure level arranged on the main circuit (1). In addition, detection means (11, 12, 13, 14) making it possible to determine information of the gas entering and / or leaving the accumulation member (4), information processing means (10) allow to process said information in order to deduce therefrom ventilation mode information, and control means (15) act on the relief valve means (6) to automatically adjust the set pressure level of said relief valve means (6 ) as a function of the ventilation mode information delivered by the processing means (10). /P