title: Swallowable sensing device for long-term gastrointestinal tract monitoring.
abstract: This paper presents a swallowable sensor device that can be ingested orally, later arriving to the stomach, where the device can indwell for a long term and can be egested at any time after it is triggered using wireless communication. This device can inflate a silicone balloon in the gastrointestinal tract using a chemical reaction. The balloon can be deflated later using electrolysis of water at the time of egestion. A motorless chemical-reaction-based egestion method is proposed to minimize the sensor device size. This device can achieve long-term monitoring in the gastrointestinal tract.
authors.forename: Ryota
authors.initials: R
authors.lastname: Nakamura
authors.forename: Shintaro
authors.initials: S
authors.lastname: Izumi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawaguchi
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Ohta
authors.forename: Masahiko
authors.initials: M
authors.lastname: Yoshimoto
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D002245:Carbon Dioxide; D003679:Deglutition / Q000502:physiology*; D041981:Gastrointestinal Tract / Q000502:physiology*; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D017693:Sodium Bicarbonate; D013997:Time Factors; D059015:Wireless Technology / Q000295:instrumentation*
chemical_list: D002245:Carbon Dioxide; D017693:Sodium Bicarbonate