Patent ID: 9474641
Filing Date: 2016-10-25
CPC Classification: A61F

Claim Text:
1. A stent graft delivery device comprising a handle at a distal end, a nose cone dilator at a proximal end, the nose cone dilator including a distal end, a guide wire catheter extending from the handle to and through the nose cone dilator at the proximal end, a pusher catheter extending from the handle towards the proximal end of the delivery device, a stent graft retained on the delivery device between the distal end of the nose cone dilator and the pusher catheter, the stent graft having a graft lumen therethrough and the guide wire catheter extending through the graft lumen, a pusher lumen through the pusher catheter, the guide wire catheter extending through the pusher lumen and longitudinally and rotationally movable with respect to the pusher catheter, an indwelling catheter extending from the handle through the pusher lumen and the stent graft lumen outside the guide wire catheter towards the nose cone dilator, the indwelling catheter comprising a distal end adjacent the handle, a proximal end adjacent the nose cone dilator, a flexible proximal tip, and a main portion comprising a metal hypotube that is both flexible and resilient, wherein the indwelling catheter is of sufficient rigidity such that it is configured to transmit rotational movement along the full length of the indwelling catheter from its distal end to its proximal end and to the flexible proximal tip such that rotation of the distal end of the catheter from outside the patient translates into rotation of the flexible proximal tip, and wherein the indwelling catheter is configured to transmit, longitudinal advancement and longitudinal withdrawal from the distal end to the proximal end thereof; the flexible proximal tip having a pre-formed continuous semi-circular curved shape; wherein the indwelling catheter immediately distal to the flexible proximal tip is less flexible than the proximal tip; wherein the flexible proximal tip retains its pre-formed curve with an indwelling guidewire disposed through the pre-formed curve and throughout the length of the indwelling guidewire such that the indwelling guidewire is extended through the curve and can be extended into a targeted branch vessel, and wherein an inner diameter of the flexible proximal tip is greater than an inner diameter of the main portion.