CPC A61F 2/04 (2013.01) [A61F 2/2412 (2013.01); A61F 2/2418 (2013.01); A61F 2/958 (2013.01); A61L 27/025 (2013.01); A61L 27/30 (2013.01); A61L 27/56 (2013.01); B05D 1/02 (2013.01); A61F 2002/044 (2013.01); A61F 2210/0014 (2013.01); A61F 2210/0076 (2013.01); A61F 2230/0021 (2013.01); A61F 2230/0067 (2013.01); A61L 27/3679 (2013.01)] | 20 Claims |
1. A method of manufacturing an expandable stent, the method comprising:
positioning a mandrel within a lumen of a tubular scaffold, the tubular scaffold including an inner surface, an outer surface and a plurality of filaments extending from a first end of the tubular scaffold to a second end of the tubular scaffold, wherein the plurality of filaments are arranged to define a plurality of apertures therebetween, the plurality of apertures extending from the inner surface to the outer surface through a wall of the scaffold and wherein the mandrel includes a recessed portion extending radially inward from an outer surface of the mandrel;
depositing a material through the apertures of the tubular scaffold such that the material contacts the recessed portion of the mandrel radially inward of the inner surface of the tubular scaffold, wherein depositing the material further includes forming an inner layer of material within the lumen of the scaffold, wherein a portion of the inner layer of material has an outer surface spaced radially inward of and spaced away from and not in contact with the inner surface of the scaffold, wherein the portion of the inner layer of material that is spaced radially inward of and spaced away from the inner surface of the scaffold forms a valve extending radially inward from the inner surface of the scaffold, wherein the valve is formed in a middle region of the tubular scaffold with first and second end regions of the tubular scaffold extending axially away from opposite ends of the valve such that the valve is located between the first and second end regions of the tubular scaffold; and
removing the mandrel.
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