A system for designing and ordering a stent graft is described. The system includes a user interface for designing and ordering the stent graft, and a centralised data processor remote from and in communication with the user interface for processing and storing entered information. The user interface further includes a selection portion for selecting a stent graft design and a design portion for entering a plurality of design parameters related to the stent graft design. A verification portion is also provided to verify details of a completed stent graft design with an ordering portion to order the completed stent graft design. In one embodiment the verification portion includes the capability to display a 3-dimensional view of the completed stent graft design.