Patent ID: 8460357

Claim:
An apparatus for delivering a prosthesis into a target vessel having a vessel wall with a vessel diameter comprising: a flexible catheter body having proximal and distal portions, said flexible catheter body having a first expandable member carried at or near the distal portion thereof and a second expandable member carried at an adjustable distance proximal to the first expandable member, at least a portion of the first and second expandable members being expandable to the vessel diameter to engage the vessel wall, the distance between the first and second expandable members being adjustable, a therapeutic material comprising a fluidized stent material which is in fluid communication with an exterior of the apparatus through a passageway in the catheter body; a molding member positioned along the catheter body and integrally formed with the first expandable member such that the molding member and first expandable member form a single inflatable balloon in fluid communication with one another and the molding member is expandable in a proximal direction from the first expandable member and has an expanded length which is adjustable to correspond to the distance between the first and second expandable members, the molding member further having an expanded profile which, during use of the apparatus, conforms the therapeutic material against the vessel wall in a selected shape and where the expanded profile is shaped to be different from an expanded profile of the first and second expandable members; and, a secondary sheath which is adjustably positionable over the molding member and is further longitudinally positionable independent of a location of the first and second expandable members, where a position of the secondary sheath controls expansion of the molding member independently from the first and second expandable members, wherein said first expandable member and said second expandable member, when inflated to the vessel diameter, define a void space around the distal portion of the catheter body which is unoccupied by any portion of the apparatus prior to delivery of the prosthesis, the void space being in fluid communication with the therapeutic material and having a length dimension between a proximal surface of the first expandable member and a distal surface of the second expandable member that is adjustable by adjusting the positions of the proximal surface of the first expandable member relative to the distal surface of the second expandable member.