A double coaxial delivery system for deployment of a two-stage stent-graft. An experimental feasibility study

Purpose: To design and test a delivery system for successive, rapid two-sta ge deployment of an aortic stent graft. Material and Methods: An aortic stent graft was made that consisted of two separate parts. A delivery system composed of two independent coaxial mecha nisms was fabricated and used to deploy the stages of the graft in dogs' ao rtas. Results. Delivery was successful in all four dogs, and required less than 2 min in each animal. Conclusion: The double coaxial delivery system enabled quick endovascular a ssembly of a two-stage aortic stent-graft.