The Optical Dilator: a clear, over-the-scope bougie with sequential dilating segments

Gastrointest Endosc. 2006 May;63(6):840-5. doi: 10.1016/j.gie.2005.08.042.


Purpose: The safety and efficacy of esophageal dilation is enhanced when direct visualization is possible, tactile sensation and feedback from resistance is maintained, and multiple dilations with a single passage of the dilating device is an option. The InScope Optical Dilator (InScope, a Division of Ethicon Endo-Surgery, Inc, Cincinnati, Ohio) is a flexible, transparent bougie fitted over a standard endoscope, with 3 dilating segments allowing sequential dilation under direct visualization. We report our experience with this device in treating benign esophageal strictures.

Methods: Patients with solid food dysphagia due to peptic strictures or Schatzki's ring were studied by using a 27F or 29F endoscope. Based on stricture appearance and estimated luminal diameter, 1 of 3 dilator sizes was chosen: IN0216 (14-, 15-, and 16-mm dilating segments), IN0218 (16-, 17-, and 18-mm dilating segments), or IN0220 (18-, 19-, and 20-mm dilating segments).

Results: Twenty-six patients were dilated and included 17 peptic strictures and 9 Schatzki's rings. Before dilation, most patients reported difficulties with solids at every meal. Median improvement 3 weeks after dilation was rated by patients as "substantial relief." Patients rated the dilation experience as largely "not at all unpleasant" immediately after endoscopy and had no recollection at 3 weeks' follow-up. There were no complications. Endoscopists rated dilator use as typical of experience with other bougies, and visualization was rated as high.

Conclusion: The Optical Dilator maintains the value of tactile sensation and the convenience of 3 dilating sizes for each passage of the instrument with the added benefit of direct visualization.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Deglutition Disorders / therapy*
  • Dilatation / instrumentation*
  • Endoscopy, Gastrointestinal* / methods
  • Equipment Design
  • Esophageal Stenosis / therapy*
  • Female
  • Gastroscopes
  • Humans
  • Male
  • Middle Aged