| 摘要 |
An inspiratory tube (6) intended to serve as at least part of an inspiratory tube in a ventilator (4), comprising a wall, a distal end (6A), a proximal end, a gas flow channel (18) for carrying a flow of breathing gas and an opening (50) in the wall (19) at a specific distance from one end (6A) of the inspiratory tube (6), said opening (50) being devised for connection of an expiratory device (40), is described. The inspiratory tube (6) achieves increased functionality and user-friendliness when it is devised with a constriction (28) in the gas flow channel (18) between one end (6A) of the inspiratory tube (6) and the opening (50), a first channel (26) that runs inside the wall, essentially parallel to the gas flow channel (18), and opens into the gas flow channel (18) between the distal end (6A) of the inspiratory tube (6) and the constriction (28), and a second channel (24) that runs inside the wall, essentially parallel to the gas flow channel (18), and opens into the gas flow channel (18) between the constriction (28) and the opening (50). The channels (24, 26) can be connected to a pressure gauge (22, 30) for determining the gas flow's rate of flow and pressure. <IMAGE> |
