Cryogenic catheter, system, and method for selective ablation of mucosa and submucosa of the gastrointestinal tract

Abstract

Disclosed is a cryogenic catheter including a probe at the distal end, a shaft at the proximal end, and a cryogenic fluid delivery channel assembly operably coupled to the probe and shaft. The cryogenic fluid delivery channel assembly includes a cryogenic sprayer component, a catheter support wire, and a catheter overtube. The cryogenic sprayer component includes at least one sprayer tube and at least one delivery channel. The sprayer tubes include at least one sprayer through which a cryogenic fluid transported within the at least one delivery channel can be delivered to one or more target areas or treatment zones. The cryogenic fluid delivery channel assembly does not require the use of a central rail. The cryogenic catheter can be used in cryogenic ablation systems and methods involving cryogenic ablation of mucosal tissue and/or of both mucosal tissue and submucosal tissue in the gastrointestinal tract of a subject.

Dependencies are inferred from the claim text.