Devices: (a) balloon-expandable prosthesis. (b) Self-expanding prosthesis, a Medtronic Freestyle valve sewn inside the Nitinol self-expanding stent. A small stainless steel welded on the small round extension of distal end of the stent serves as a passive marker indicating the orientation of the prosthesis. The grasping member of the proximal end is used for retrieve and reposition of the stent. (c) A CAD drawing of the delivery device with loop coil and antenna. Sheath with handle (1) protects and retains the prosthesis compressed until the deployment. Inner rod with handle (2) pushes the prosthesis for deployment. Inner channel of the inner rod provides access for the loop snare wire (4). End spacer with dimension protection (3) protects the end valve and ensures the exact dimension for the loop snare wire. The loop coil antenna (5) is fixed into the groove cut on exterior tube of valve delivery system. The delivery device is made of nylon and delrin.
