Dual chamber passive retraction needle syringe

摘要

Embodiments of a retractable syringe assembly are provided that include a dual syringe barrel configuration. In one or more embodiments, the assemblies include a fluid barrel for retaining fluid and a retraction barrel for housing the retraction feature and the needle hub assembly. The assemblies include a trigger element that moves with the plunger rod to activate the retraction feature within the retraction mechanism.