Definition : Stents designed for deployment into the colon or the proximal rectum to provide support and/or to maintain patency within the lower digestive tract. These devices typically consist of metallic self-expanding stents, either compressed metallic stents that open by themselves as soon as they are released or shape-memory stents manufactured from an alloy combining nickel and titanium (i.e., nitinol) that expands in response to body temperature. Some stents include radiopaque markers for accurate stent positioning. Colonic stents are typically deployed using endoscopic procedures; they are mostly used to treat strictures caused by carcinomas in patients with high operative risk and/or advanced disease. Some of these stents may be used in other sections of the digestive tract (e.g., duodenum).
Entry Terms : "Colonic Stents" , "Nitinol Stents" , "Self-Expanding Stents" , "Metallic Stents"
UMDC code : 20449