EZ to use, EZ to train and EZ to maintain the EZ-IO® is the clear choice of intraosseous solution for medical professionals and the best method to gain immediate vascular access...when you need it most. The EZ-IO® Intraosseous Infusion System is a complete solution for immediate vascular access — whether you’re facing difficult vascular access challenges or need immediate intraosseous access for critical situations and life-threatening emergencies.