Patent ID: 6173711
Filing Date: 2001-01-16
Classification: A61M

Abstract:
Respiratory assistance device, comprising:an inhalation branch which is permanently connected, at its upstream end, to a first pressurized gas flow source and, at its downstream end, to a user's airways;at least a first exhalation valve and a second exhalation valve; said exhalation valves being arranged on said inhalation branch and controlled so that said exhalation valves are closed during a user's inhalation phase;a drive means for controlling the first pressurized gas flow source and delivering a stream of gas with substantially constant non-zero flow rate to the inhalation branch throughout a user's exhalation phase; anda detection means located in proximity to the downstream end of the inhalation branch, for detecting a user's respiratory activity, and sending a respiratory activity data item to the drive means.