Abstract: An anti-condensation arrangement for catheters including a heated air generator, a sheath covering a catheter such as to create a cavity with it, and a device for the input of heated air produced by the generator into the cavity wherein the sheath has a venting opening to allow the exit of heated air from the cavity and therefore continuous exchange of air.

Abstract: An anti-condensation arrangement (5) for catheters comprising a heated air generator (6), a sheath (9) covering a catheter (4) such as to create a cavity (I) with it, and a device (7,8) for the input of heated air produced by the generator (6) into the cavity (I). The sheath (9) has a venting opening (9b) to allow the exit of heated air from the cavity (I) and therefore continuous exchange of air.

Abstract: A device (10) for detecting and showing a dangerous resistance to flow in a gaseous fluid through a filter (102). The device (10) is characterized: by the fact that it comprises a body (11); by the fact that the body (11) is divided into two chambers (CH1, CH2) by an elastic membrane (MBN); a preferably calibrated hole (13) connects the first chamber (CH1) with the patient end (A); the second chamber (CH2) being in communication, instead, with the ventilator end (B), by means of a pressure-relief channel (14), which traverses the filter (102); and by the fact that it is provided with elements for detecting and showing a dangerous resistance to flow in a flow (FL) of gas that traverses the filter (102); the detection elements comprising the membrane (MBN).