#$%^&*AU2018202089A120181018.pdf#####ABSTRACT A medical device includes a disposable Ear-NoseThroat (ENT) tool, a reusable handle, and a processor. 5 The ENT tool is configured to perform a medical procedure in a patient ENT organ. The reusable handle is configured to hold and control the disposable ENT tool, and includes a position sensor configured to produce one or more position signals that are indicative of a first position 10 of the reusable handle. The processor is configured to receive the position signals from the position sensor, and to estimate, based on the position signals, a second position of the disposable ENT tool in the patient ENT organ. 151/2 00 CVY) cn(