HUMIDITY CONTROLLER

摘要

A breathing assistance apparatus adapted to deliver humidified gases at a desired level of humidity to a patient, including a humidifier and a heated conduit (116). The humidifier includes a controller (100), which determines a parameter of gas flow rate and then the required power input (108) to the humidifier to deliver the gases to the patient at the required patient humidity. In a second embodiment, a conduit heater (116) is provided and the controller determines whether it has been correctly connected to the control . External sensors are dispensed with and thus the apparatus is simple and les s bulky.