title: A new device for simultaneous manipulation of an endoscope and a treatment device during procedures: an ex vivo animal study.
abstract: OBJECTIVE
  Endoscopists must maneuver both endoscope and treatment device during procedures, requiring them to release their hand from the scope to manipulate the treatment device. Aiming to improve this situation, we developed a new device called the Thumb Drive.
  
  
  METHODS
  The Thumb Drive comprises a controller and catheter. After attaching the controller to the endoscope's grip, the catheter is inserted into the forceps channel. The treatment device is then inserted into the Thumb Drive and fixed with its tip protruding from the endoscope tip. A single endoscopist resected 10 lesions in a porcine stomach by endoscopic submucosal dissection (ESD) using the Thumb Drive.
  
  
  RESULTS
  All lesions were resected en bloc using this new device without any perforations. The mean incision, dissection, and operative times were 97.2 ± 48.7 seconds, 121.6 ± 53.6 seconds, and 218.8 ± 67.8 seconds, respectively.
  
  
  CONCLUSIONS
  The Thumb Drive enables the endoscopist to manipulate the treatment device with the thumb while handling the endoscope with the right hand during ESD. Its utility should be examined in in vivo studies as a next step.
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kikuchi
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Yamada
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Toshiro
authors.initials: T
authors.lastname: Iizuka
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Kosuke
authors.initials: K
authors.lastname: Nomura
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Kuribayashi
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Ryusuke
authors.initials: R
authors.lastname: Kimura
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yamashita
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Furuhata
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Matsui
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Mitani
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Ogawa
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Shu
authors.initials: S
authors.lastname: Hoteya
authors.affiliation: Cancer Center, Keio University, Tokyo, Japan.
authors.forename: Naohisa
authors.initials: N
authors.lastname: Yahagi
authors.affiliation: Department of Gastroenterology, Toranomon Hospital, Tokyo, Japan.
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Kaise
mesh_terms: D000818:Animals; D004210:Dissection / Q000295:instrumentation; D016099:Endoscopy, Gastrointestinal / Q000009:adverse effects / Q000295:instrumentation*; D004867:Equipment Design; D005753:Gastric Mucosa / Q000601:surgery*; D061646:Operative Time; D013552:Swine