Patent ID: 8790385

Claim:
A percutaneous, transluminal system with a distal end for inserting into a body and a proximal end to remain outside the body, the system including: an inner catheter, comprising: an inner tube, a wire coil disposed around at least a portion of the inner tube, having a distal region, an intermediate region and a proximal region, and including a closed-coil structure in the intermediate region and an open-coil structure in at least one of the distal region and the proximal region, an outer tube disposed around at least a portion of the wire coil, and a flow path for liquid from the proximal end through the distal end of the system, including a radially-extending portion through the open-coil structure; an outer sheath disposed around at least a portion of the length of said inner catheter, the outer sheath being retractable in a proximal direction relative to the inner catheter; and a self-expanding stent positioned around the inner tube wherein the self-expanding stent is maintained in a medical-device-receiving annulus inside the outer sheath near the distal end, the self-expanding stent being releasable by the retraction of the outer sheath in a proximal direction relative to the inner catheter; wherein the self-expanding stent is held within the outer sheath and is positioned distal of the distal end of the wire coil; the self-expanding stent is maintained in a radially compressed first state by the outer sheath being disposed about at least a portion of the self-expanding stent; during retraction of the outer sheath, the self-expanding stent is prevented by the wire coil from moving with the outer sheath in a proximal direction; and when the outer sheath is retracted in a proximal direction relative to the inner catheter, the self-expanding stent is released for expansion to a radially less compressed second state.