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Biliary metallic stents designed to be expanded using a high-pressure balloon after delivery through an appropriate stent-delivery system, applying a constant radial pressure to the artery walls. These stents are usually made of stainless steel or platinum, and some are radiopaque or include radiopaque markers for accurate positioning. Balloon-expandable biliary stents are used to open biliary-tree strictures (e.g., malignant strictures) without compromising the flexibility of the ducts.
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