INTERNAL ILIAC PRESERVATION DEVICES AND METHODS
A system for internal iliac preservation includes a catheter having a distal catheter portion and a proximal catheter portion; a first guidewire having a proximal portion extending from the proximal catheter portion, a distal portion and a medial portion disposed between the proximal portion and the distal portion; a first outer sheath slidably disposed over distal catheter portion; and an integrated second delivery system disposed within the outer sheath at the distal catheter portion. The integrated second delivery system includes a second guidewire; an expandable stent-graft disposed over a lumen of the second guidewire, and a slidable connector slidably disposed over the medial portion of the first guidewire, where the second guidewire is slidably engaged with the slidable connection to permit movement of the integrated second delivery system along the first guidewire when the first outer sheath is retracted from distal catheter portion.
1 - 20 . (canceled)
21 . A delivery system comprising
a cannulate guidewire having a distal end;
a distal tip disposed at the distal end of the cannulate guidewire
an expandable stent or stent-graft disposed over a lumen of the guidewire;
an outer sheath disposed over the expandable stent or stent-graft; and
a thread having a distal portion associated with the distal tip;
whereby retraction of the thread moves the distal tip in a direction towards the outer sheath.
22 . The delivery system of claim 21 , wherein the thread is disposed within a thread lumen.
23 . The delivery system of claim 22 , wherein the thread lumen is disposed along the cannulate guidewire lumen.
24 . The delivery system of claim 23 , wherein the thread lumen is disposed underneath the stent-graft and over the cannulate guidewire lumen.
25 . The delivery system of claim 21 , further comprising a catheter.
26 . The delivery system of claim 25 , wherein the thread has a proximal portion accessible at a proximal portion of the catheter.
27 . The delivery system of claim 21 , further comprising a handle assembly.
28 . The delivery system of claim 27 , wherein a proximal portion of the thread is accessible at the handle.
29 . The delivery system of claim 27 , wherein the thread may be retracted proximally at the handle assembly to re-sheath at least a portion of the delivery system within the outer sheath.
30 . A delivery system comprising
a cannulate guidewire having a distal end;
a distal tip disposed at the distal end of the cannulate guidewire
an expandable stent or stent-graft disposed over a lumen of the guidewire;
an outer sheath disposed over the expandable stent or stent-graft; and
a slidable connector disposed at a proximal portion of the delivery system;
whereby the slidable connector is configured to facilitate movement of the of the delivery system
relative to an elongate structure connected to the delivery system.
31 . The delivery system of claim 30 , wherein the elongate structure is a hypotube.
32 . The delivery system of claim 30 , wherein the elongate structure is a main guidewire.
33 . The delivery system of claim 32 , wherein proximal retraction of the slidable connector advances the outer sheath relative to the main guidewire.
34 . The delivery system of claim 32 , wherein the slidable connector has a hollow portion through which the main guidewire is slidably disposed.
35 . The delivery system of claim 32 , wherein the slidable connector is slidably disposed over a medial portion of the main guidewire.