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1. (WO2016154209) SYSTEM AND METHODS FOR TRIGGERING A RADIOFREQUENCY TRANSCEIVER IN THE HUMAN BODY

Pub. No.:    WO/2016/154209    International Application No.:    PCT/US2016/023595
Publication Date: Fri Sep 30 01:59:59 CEST 2016 International Filing Date: Wed Mar 23 00:59:59 CET 2016
IPC: A61B 5/00
A61B 1/04
A61B 5/06
A61B 5/07
A61M 31/00
A61B 5/01
A61B 5/145
A61B 5/1495
Applicants: ROCK WEST MEDICAL DEVICES, LLC
Inventors: OLD, Thomas, Eugene
BAKER, John, Christoper
CARRON, Neal, Jay
PRITCHETT, Donald, Gordon
Title: SYSTEM AND METHODS FOR TRIGGERING A RADIOFREQUENCY TRANSCEIVER IN THE HUMAN BODY
Abstract:
Near field communications are used to locate a radiating transponder, such as a pill swallowed by a patient. The system can be triggered to turn on and transmit a waveform to a set of antennas attached to, coupled with, or near the patient. 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. Further, the pill can include a reservoir to deliver a payload at a particular site of the patient's body based at least in part on the determined location.