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  • Surgical dilators designed for mechanically augmenting the diameter (caliber) of the colon during surgery. These surgical dilators typically consist of an instrument with an oblique distal end that may include a balloon to facilitate placement and to displace tissue near angled surfaces; the balloons are expanded via pressure injection of liquid (e.g., saline, water, radiopaque contrast). Balloons may expand to a fixed size or to one of several size diameters. Colon endoscopic dilators are available as wire-guided or non-wire guided (fixed wire); they usually offer direct endoscopic visualization and provide radial force directly to the stricture site. The dilators are mainly used during gastrointestinal dilation procedures to open narrowed areas or structures in the lower digestive tract (e.g., sigmoid colon).
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