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Wire guided dilators (Savary dilators)

These dilators are tapered and shaped like Maloney dilators. The scope is used to pass a guide-wire through the stricture. The scope is then removed and the Savary dilators are passed over the guide-wire through the stricture. The dilators have a small passageway through the center which allows them to slide over the wire. These are used when strictures are too firm or too narrow to be dilated with Maloney dilators. Maloney dilators are not wire guided.

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Q: What is the difference between the savory dilator and maloney dilator?
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