AccessClosure develops arterial closure devices. The Matrix VSG™ System has been developed by AccessClosure to seal femoral arterial puncture sites after endovascular procedures through the simultaneous injection of two synthetic fluid components into the tissue tract of the access site. Once the two fluids are delivered, they mix subcutaneously to form a hydrogel sealant over the arterial access site, around the artery, and in the tissue tract. The fluids are comprised of fully synthetic and non thrombogenic polyethyleneglycol (PEG), a biomaterial commonly used in medical devices and pharmaceutical products. The PEG hydrogel is designed to be fully absorbable in the body within 30 days, leaving behind only a completely healed puncture site. The material is designed so that if the PEG hydrogel is inadvertently injected into the artery, it will dissipate in flowing blood, thus minimizing catastrophic closure complications. The Matrix VSG System is designed to provide benefits of Safety, Simplicity, and Patient Comfort.