sentences:  Endoclips have also found an application in preventing bleeding when performing complicated endoscopic procedures.For example, prophylactic clipping of the base of a polyp has been found to be useful in preventing post-polypectomy bleeding, especially in high-risk patients or patients on anticoagulant medications.In addition, clips can be used to close gastrointestinal perforations that may have been caused by complicated therapeutic endoscopy procedures, such as polypectomy, or by the endoscopic procedure itself.