source or pump source a breath bolus valve 70 may be coupled to the gas supply system 20 to control gas flow 18 as gas bolus 75 is delivered to a user in some embodiments a gas filter 71 such as filter materials from superior felt amp filtration llc ingleside ill filters gas flow 18 from bolus valve 70 to remove undesired substances such as particles bacteria and viruses referring to fig3 a 4 and 5 tubes 30 are connected to the lower part of the housing 10 to direct gas flow 18 such as pressurized air of gas bolus 75 to a user 39 s nasal or oral cavity tubes 30 are preferably flexible to allow device 5 movement during sleep the shape of the tubes 30 can also be formed to assist in further opening nostrils appropriate materials are used to dampen vibration and pump or valve noises appropriate material can be used to cushion the device against the user 39 s face in various embodiments a microprocessor 50 and related electronics such as from texas instruments dallas tex provides centralized control of the integrated electronic components of the device 5 such as in response to one or more input signals in.