US Patent 7893876 System and method for determining locations of medical devices

The location of a medical device is determined by receiving one or more signals at the medical device transmitted by one or more beacons, respectively, at known locations. The one or more signals received at the medical device are sent from the medical device to a processor, which determines the location of the medical device based on the received one or more signals. One of the beacons may be a portable patient beacon, the location of which is determined when its signal is received by a medical device, the location of which was previously determined.