Patent ID: 9700365
Date: 2017-07-11
CPC Classifications: A61B,A61M

Claim:
1. A device adapted to treat Barrett's esophagus in an esophagus of a patient by ablating esophageal tissue, comprising: a catheter having an outer sheath and an inner shaft through which an ablative agent can travel, wherein the outer sheath is positioned around the inner shaft and movable with respect to the inner shaft; a first positioning element attached to said inner shaft at a distal end of said inner shaft, wherein said first positioning element comprises an inflatable balloon configured to be positioned in a gastric cardia of the patient, thereby positioning the catheter at a fixed distance from the esophageal tissue to be ablated; an input port at a second position and in fluid communication with said inner shaft in order to receive said ablative agent wherein the inner shaft comprises one or more ports through which said ablative agent can be released out of said inner shaft, wherein each of said one or more ports is positioned between the input port and the distal end along and circumferentially around said inner shaft and separated from the inflatable balloon by a distance of at least 1 mm; and a controller programmed to determine an amount of thermal energy needed to ablate said esophageal tissue programmed to limit a maximum dose of said ablative agent based on a type of disorder being treated, wherein said type of disorder comprises Barrett's esophagus, and programmed to limit the amount of thermal energy delivered such that a pressure within the patient's esophagus does not exceed 5 atm.