Patent ID: 9060893
Filing Date: 2015-06-23
Classification: A61F

Abstract:
1. A delivery system for a medical device, comprising: a stent having a proximal end and a distal end, an inner shaft which encloses an inner lumen having axial openings at proximal and distal ends of the inner shaft, and an outer shaft which surrounds the inner shaft in at least one area and encloses an intermediate lumen, the intermediate lumen being an area disposed between an inner surface of the outer shaft and an outer surface of the inner shaft, wherein a plurality of side openings are formed in the inner shaft, each of the plurality of side openings establishing a fluid connection between the inner lumen and the intermediate lumen, at least a first one of the plurality of side openings being disposed adjacent to the proximal end of the inner shaft, a second one of the plurality of side openings being disposed adjacent to a distal end of the inner shaft, and wherein the outer shaft comprises a plurality of separate component parts, at least one of the plurality of component parts having a different inner diameter than others of the plurality of component parts, a portion of the intermediate lumen defined between the outer surface of the inner shaft and an inner surface of each of the plurality of outer shaft sections, wherein a distal one of the plurality of component parts surrounds the stent and the second one of the plurality of openings and the stent surrounds the second one of the plurality of openings, wherein a proximal one of the plurality of component parts abuts a handle piece and surrounds the first one of the plurality of side openings, and one or more central ones of the plurality of component parts tightly surrounds a central portion of the inner shaft, and wherein the inner diameter of the proximal and distal component parts are approximately equal, and the inner diameter of the central component part is smaller than the inner diameters of the proximal and distal component parts.