Here in Cardiff we currently use Draeger ventilators and have noticed that the flow sensors are not a single use item. We are looking at the option to clean them and reuse which is something we used to do pre covid. We have though since switched from using bacterial filters and HMEs to a humidified circuit that doesn't use bacterial filters. We have a number of concerns about effective cleaning of the sensor given the removal of filters. Has anybody else considered this at all?