| 摘要 |
A medical breathing assistance apparatus ( 20 ) for supplying pressurised gases to a patient is disclosed. The breathing assistance apparatus ( 20 ) comprises a heating chamber ( 29 ) and a pressure chamber ( 27 ) both adapted to contain water, and at least one pressure adjusting means ( 24,25,26 ). The pressure chamber ( 27 ) is connected to the heating chamber ( 29 ) and the pressure adjusting means ( 24,25,26 ) is located between the heating chamber ( 29 ) and a gases supplying means ( 23 ) supplying gas to both the pressure chamber ( 27 ) and heating chamber ( 29 ). The pressure adjusting means ( 24,25,26 ) is adapted to convert pressurised gases from the gases supply means ( 23 ) to two different pressures, one to each of the heating chamber ( 29 ) and the pressure chamber ( 27 ), so that water flows from said pressure chamber ( 27 ) to the heating chamber (29). |
