Patent ID: 6558429
Filing Date: 2003-05-06
Classification: A61F

Abstract:
A peroral prosthesis system for treatment of gastroesophageal reflux disease in a patient comprising:an anti-reflux valve prosthesis comprising: a mounting ring, a one-way valve depending from the mounting ring, for allowing orthograde passage of swallowed material, and impending the passage of gastric content, and a plurality of anchors extending radially outwardly from the mounting ring, wherein the anchors comprise a radial array of straight, orthogonal spikes for piercing and engaging the lumen wall of the esophagus; and a peroral implantation tool for perorally inserting and positioning the prosthesis at a distal end of the lumen of an esophagus, and fixing the prosthesis to the lumen wall of the esophagus, said tool comprising: an overtube for peroral insertion adjacent to a gastroesophageal junction, having a collar at a distal end and a handle at a proximal end; a compression collar integral with the distal end of the overtube for releaseably receiving the mounting ring in a compressed configuration; a hollow stylet slidably indwelling in the length of the overtube; and a balloon attached to a distal end of the stylet received in the compression collar, and communicating with a hollow of the stylet, and inflatable by pressurizing the hollow of the stylet.