Patent ID: 8706209
Filing Date: 2014-04-22
Classification: A61B,A61F,G01K

Abstract:
1. A method to obtain a parallel tissue conductance within a luminal organ, comprising the steps of: introducing at least part of a detection device into a luminal organ at a first location, the detection device having a detector and a thermistor positioned relative to the detector applying current to the detection device using a stimulator; obtaining a first temperature measurement of a fluid native to the first location; injecting a bolus of a solution having a known conductivity into the luminal organ so that the bolus contacts the detector of the detection device; detecting a temperature change at the first location indicative of the injected solution prior to any dilution of the bolus; measuring multiple output conductances using the detector in connection with the injected solution prior to any dilution of the bolus until the temperature within the luminal organ reaches a threshold temperature: and calculating a parallel tissue conductance at the first location based in part upon the temperature change, at least one output conductance of the multiple output conductances, and the conductivity of the injected solution.