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Three general types of dilators are currently in use. These are (1) mercury or tungsten-filled bougies (Maloney or Hurst), (2) wire-guided polyvinyl dilators (Savary-Gilliard or American), and (3) TTS (‘‘through-the-scope’’) balloon dilators. The Maloney type bougies have a tapered tip and can be passed either blindly25 or under fluoro-
Sep 21, 2024 · There are three different methods used to perform esophageal dilation: Weighted bougie: A push type dilator that is either mercury-filled (Maloney) or tungsten-filled (Hurst) Wire-guided dilator: A guide-wire is inserted first and then a polyvinyl dilator (Savary-Gilliard or American) is inserted over the guide-wire
The Maloney (Medovations, USA) is the most commonly used bougie dilator. Made of rubber and filled with mercury or tungsten, it has a tapered tip and is freely passed without a guidewire. The Savary-Gilliard (Wilson-Cook, USA) is a tapered thermoplastic dilator and is passed over a guidewire. These push-type dilators come in a variety of sizes.
Both the balloon and the Savary dilators are useful; however, the tightness and length of the stricture determines which method should be used. If the stricture is short (1-2 cm), a balloon dilator is ideal, whereas a Savary dilator can be passed through a longer stretch of a narrowed esophagus.
Feb 24, 2018 · Three randomised controlled trials compared these two techniques and found no difference in efficacy for dysphagia relief or safety at 1 year. Another retrospective study compared Maloney, balloon-type (both the hydrostatic and pneumatic type) and Savary-Gilliard dilators in 102, 156 and 90 sessions, respectively.
Historically, most benign esophageal strictures have been dilated with mercury-filled Hurst or Maloney dilators. 1,4 Long, acutely angulated, eccentric, or extremely tight (less than 7 mm) stenoses have traditionally necessitated guidewire-facilitated dilation.
Historically, most benign esophageal strictures have been dilated with mercury-filled Hurst or Maloney dilators.':' Long, acutely angulated, eccentric, or extremely tight (less than 7 mm) stenoses have traditionally necessitated guidewire-facilitated dilation.
