US Patent 11986235 Systems, methods and devices for treatment of target tissue

A system for treating a patient comprises an elongate shaft, an expandable reservoir and a fluid delivery assembly. The elongate shaft comprises a distal portion and is constructed and arranged to be introduced into a gastrointestinal lumen. The expandable reservoir is positioned on the elongate shaft distal portion and is constructed and arranged to receive a first fixed amount of ablative fluid and to deliver a first thermal dose of energy to a first portion of target tissue. The fluid delivery assembly is in fluid communication with the expandable reservoir and is constructed and arranged to deliver the first fixed amount of ablative fluid to the expandable reservoir. Devices and methods for treating tissue of a patient are also provided.