Expectoration assisting domestic apparatus for oxygendependant patient, has air controlling unit including electro valve producing series of positive and negative air pulsations during inspiration and expiration phases respectively

摘要

The apparatus has an assembly (1) including a ventilating device (11), an air controlling unit (12), a microprocessor (13), a data storage memory (14) and a man-machine interface (15) e.g. Universal serial bus (USB)interface. Another assembly (2) includes a mask (21), an air filter (22) and an air distribution tube (23), and is connected to the former assembly. The air controlling unit has an electro valve operated by the microprocessor and producing series of positive air pulsations during inspiration phase and series of negative air pulsations during expiration phase.