An entupter is a device used primarily in the field of medical technology, specifically in procedures involving endoscopic interventions. It serves to block or occlude a passage, such as blood vessels or ducts, to prevent the flow of fluids or to isolate a specific area during surgery. Entupters can be used in various applications, including the treatment of aneurysms or other vascular conditions. Their design and functionality may vary depending on the specific medical context in which they are employed.