Applicator and a method for the transpyloric placement or removal of a transpyloric and/or a transduodenal bypass device in/from the region of the pylorus of a patient

Abstract

An applicator () for a releasable coupling of a transpyloric and, if applicable, transduodenal bypass device () comprising a tubular, preferably radially collapsible and self-erecting transpyloric conducting element (), which is or has to be placed in a patient in such a way that it penetrates the pylorus of the patient and is provided with a central conducting lumen comprising an upstream mouth to be placed antegrade of the pylorus and a downstream mouth to be placed retrograde of the pylorus, for (i) accepting the chyme from the stomach, for (ii) bypass-type conducting of the chyme through the pylorus and, if applicable, through the duodenum or a part of the duodenum, and for (iii) releasing the chyme in or beyond the duodenum of the patient, to an endoscope or a catheter having an elongated shaft (), on the external surface of which the bypass device () can be placed and/or plugged in order to insert the bypass device () under direct guidance of the endoscope or catheter from the outside of the patient's body in an antegrade way through the upper digestive tract into the stomach, or to remove it in a retrograde way through the upper digestive tract, characterized in that the applicator () comprises a tubular coupling element (), which is or can be slid onto the external surface of the shaft () surrounding it, and which entirely or partially penetrates the central conducting lumen of the bypass device (), thereby bridging a gap between the external surface of the shaft () and an internal surface of the central conducting lumen of the bypass device ().