Patent ID: 8721625

Claim:
A delivery system comprising: a delivery device with a distal end and a shaft portion with a lumen extending in a longitudinal direction from a proximal end and toward the distal end, a self-expandable prosthesis arranged in a receptacle at the distal end of the delivery device, and a pusher member arranged in the lumen of said delivery device to cause relative axial movement of the self-expandable prosthesis with respect to the delivery device, said shaft portion of said delivery device comprising a first helically wound multiple filament row of from four to eight wires of circular cross-section closely adjacent to each other, wherein said row of wires has a pitch angle in the range of 40° to 65° , the wires being provided with a low-friction sealing coating of elastic material on at least a radially outwardly facing surface, the sealing coating having a thickness at the middle of each of the wires of less than 0.1 mm, said receptacle comprising a second helically wound multiple filament row of from two to twelve wires of circular cross-section closely adjacent to each other, wherein said row of wires has a pitch angle in the range of 26° to 76° , said pusher member comprising a third helically wound multiple filament row of from two to twelve wires of circular cross-section closely adjacent to each other, wherein said row of wires has a pitch angle in the range of 26° to 76° , and one of a radially inwardly facing surface of said delivery device and a radially outwardly facing surface of said pusher member being provided with a low-friction sealing coating of elastic material.