| 摘要 |
<p>A machine suitable to cause the evacuation of gases emanating from an apparatus producing anaesthesia by inhalation, and which acts without significant pressure perturbations within the intake circuits connected to the patient, the machine including a variable-volume chamber, formed by the bellows (4) and its base (6), the chamber, being suited to receive gases, from the inlet door (12) and it having a passively movable surface (7) located downstream with respect to the flow of said gases from the exhaust valve of the apparatus producing anesthesia; a variable-delivery pumping apparatus (8, 9, 10, 11) separated from said variable-volume chamber and situated downstream thereof; automatic means (62,71) suited to control and adjust the variable delivery and arranged to minimize possible pressure-extent variations existing in said variable-volume chamber; a safety device (82,83,93) disposed between the variable-volume chamber and the outside, adapted to keep pressure in the variable-volume chamber within predetermined extents.</p> |
