Becoming independent, in order to offer the control possible medical application detention component, it is detained the air supplying and water supply to the tube cavity internal organs such as stomach and small intestinal tract inside the duodenum of the patient, the medical application detention component which seals the fluid, contacting the intestinal wall of the aforementioned duodenum, distribution facilities it is done inside the seal section and possess the pipe conduit the substance and the aforementioned pipe conduit which seal the aforementioned fluid it allows the high-level alimentary canal fluid passing only the unidirectionally from the alimentary canal of the downstream which designates the aforementioned detention place as standard, the 1st unidirectional valve and, it has.胃や小腸管などの管腔臓器への送気および送水を独立して制御可能な医療用留置部材を提供するために、患者の十二指腸内に留置され、流体を封止する医療用留置部材が、前記十二指腸の腸壁に接触して、前記流体を封止する封止部と、管路を有する本体と、前記管路内に配設され、前記留置箇所を基準にした下流の消化管から上流の消化管への一方向にのみ流体の通過を許容する、第1の一方向弁と、を備える。
