| 摘要 |
<p>The apparatus includes a first part (1) of tubular shape, including an air inlet orifice (4) in which the patient can exhale and inhale. A second part (2), inclined upwards, includes an exhaust channel (5) of conical shape, in which a spherical ball (6) is arranged, the diameter of which is greater than the dimensions of the inlet orifice of the channel, so as to block the channel before exhaling, the axis of the conical channel (5) being inclined upwards with respect to the axis of the part (1) of tubular shape. A third part (3), inclined downwards, includes an exhaust channel (5') of conical shape, in which a spherical ball (6') is arranged, the diameter of which is greater than the dimensions of the inlet orifice of the channel, so as to block the channel before inhaling, the axis of the conical channel (5') being inclined with respect to the axis of the part (1) of tubular shape. <IMAGE></p> |
