Thomas Eugene Old,John Christopher Baker,Neal J. Carron,Donald Gordon Pritchett
申请号：
US13969435
公开号：
US20140058221A1
申请日:
2013.08.16
申请国别(地区):
US
年份:
2014
代理人:
摘要：
Systems and methods described herein use near field communications to locate a radiating transponder, such as a pill swallowed by a patient. The system can be triggered to turn on and transmit an amplitude shift keyed waveform (or other type of waveform) to a set of antennas attached to, coupled with, or near the patient at roughly known locations. The magnetic field emitted by the transponder can be measured by the receiving antennas, for example, using principles of mutual inductance. The differential phase and/or time shifts between the antennas can contain sufficient information to find the location of the transponder and optionally its orientation relative to body coordinates. The system can display the location and/or orientation of the transponder and may optionally provide other information about the movement, flow, or other characteristics of pill to assist clinicians with diagnosis.
