1. A system of controlling inventory in a medical facility, comprising: a medical treatment area within a medical facility having a network, the medical treatment area and network configured such that the network can determine that a wireless medical device is within the medical treatment area, the medical treatment area being assigned to a patient; a plurality of wireless medical devices inventoried by the medical facility, each inventoried wireless medical device having a medical device record; wherein the network is configured to automatically detect and identify a wireless medical device upon introduction of the wireless medical device into the medical treatment area, determine whether a medical device record exists for the newly detected wireless medical device, create a medical device record if the newly detected wireless medical device does not have a medical device record, and assign the newly detected wireless medical device to the patient to whom the medical treatment area is assigned.