Intraosseous Access System

An intraosseous access system including an intraosseous driver coupleable with access assembly that includes an obturator assembly having an obturator and an access assembly needle assembly having a needle lumen defining a needle lumen. The access assembly further includes an extension set having an extension tube having extension tube hub and a bag attachment member coupled with the extension tube at opposite ends. The extension tube hub forms a rotating seal with the access assembly. The access assembly and the bag attachment member are contained within separate sterile packages with the extension tube extending therebetween. A fluid pathway extends between the bag attachment member and the needle lumen.