Model for Electrical Field Distribution in the Human Esophagus during Stimulation with Patch and Ring Electrodes
Figure 1
(a) Catheter was developed and designed to compare electrical stimulation with ring electrodes placed on the catheter using different electrode distances. Another catheter was designed for comparison of electrical stimulation with ring electrodes placed on the catheter and patch electrodes placed on a small inflatable bag. (b) The experimental setup. The potential across a known resistance was measured as U1 to verify the output of the electrical stimulator. The verified current intensity was used to calculate the transmural impedance of the total esophageal wall from the measured potential U2. P1 and P2 are pressure recording sites on the probe.
