Allvivo Vascular Inc (AVI), spun out of research conducted at the University of Utah's Center for Biopolymers and Interfaces, develops biocompatible and antimicrobial coatings for medical devices and combination products. The company uses proteomics and cellomics research based on proprietary coating technologies developed originally at the University of Utah's Center for Biopolymers and Interfaces. The company's lead products are Gatekeeper, a coating that combines the benefits of a nonthrombogenic surface with an active antibacterial agent, and ProteoGuard, a stent coating and alternative to the use of immune-suppressive and cytotoxic drugs to prevent restenosis.