Abstract: A device for detecting the relative humidity in a respiratory circuit is provided which includes a housing closed towards the outside by a transparent element, and towards the inside by a membrane permeable to the humidified gas passing through the equipment to which the device is applied and wherein the housing includes a humidity indicator element.

Abstract: A respiratory apparatus includes a bioburden indicator, having an input valve for the entry of air to be analysed, an element for bioburden analysis, and a suction valve suited to be connected to a suction system to suck up the air to be analysed.

Abstract: A device for detecting the relative humidity in a respiratory circuit is provided which includes a housing closed towards the outside by a transparent element, and towards the inside by a membrane permeable to the humidified gas passing through the equipment to which the device is applied and wherein the housing includes a humidity indicator element.

Abstract: An HME (heat and moisture exchanger) (10) having a septum (or filter) (15) formed by pleating a sheet (150) of material capable of retaining and releasing heat and moisture. The HME (10) is characterized in that walls (15a, 15b, 15c) of the septum (or filter) (15) are coated partly or completely with sealing material to define at least two exposed areas (A1, A2) through which inhaled gas (F1) and exhaled gas (F2) flow respectively. Moreover, each sheet (150) of material is divided into identical units (150a) “fan-folded”, in use, one on top of another to form a first set of passages (150b) through which only the inhaled gas (F1) flows, and a second set of passages (150c) through which only the exhaled gas (F2) flows.