Abstract
THE Palmaz P308 stent (Cordis/Johnson & Johnson, Warren, NJ) was approved in 1991 and was the first stent to gain Food and Drug Administration (FDA) approval for use in the iliac arteries. The Wallstent (Boston Scientific, Natick, MA) gained approval in 1996. Both stents were approved for use after suboptimal angioplasty based on historical comparisons with angioplasty, or in the case of the Wallstent, with historical results with use of the Palmaz stent. There are approximately 40 other stents that have achieved FDA approval for marketing in the United States, usually labeled as biliary stents.
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