Patent ID: 7797033
Filing Date: 2010-09-14
Classification: A61B

Abstract:
1. A method of determining the real-time location of a capsule in a tract of a mammal, comprising the steps of: providing a capsule, said capsule having sensors to determine at least a first physiological parameters of said tract and a second physiological parameter of said tract that is different from said first physiological parameter, said capsule also having a transmitter operatively arranged to transmit a signal reflecting such sensed parameters; inserting said capsule into said tract; transmitting a first said signal from said transmitter; receiving said first transmitted signal exteriorly of said tract; determining the value of said first sensed parameters; determining the phase or amplitude of said first signal; determining a first location of said capsule within said tract as a function of both (i) said determined phase or amplitude of said received signal and (ii) said determined value of said first sensed parameter; transmitting a second said signal from said transmitter; receiving said second transmitted signal exterior of said tract; determining the value of said second sensed parameter; determining the phase or amplitude of said second signal; and determining a second location of said capsule within said tract as a function of both (i) said determined phase or amplitude of said received signal and (ii) said determined value of said second sensed parameter.