Dissolvable or degradable adhesive polymer to prevent stent migration

The self-expanding stent comprising:

• a self-expanding stent body having an inner surface and an outer surface;
• a covering of silicone or urethane disposed on an entirety of the outer surface of the self-expanding stent body such that the covering of silicone or urethane directly contacts the outer surface of the self-expanding stent body, wherein said covering of silicone or urethane comprises a roughened outer surface along an entirety of the covering of silicone or urethane to facilitate adhesive bonding to the roughened outer surface of the covering of silicone or urethane;
• a dissolvable adhesive polymer layer or degradable adhesive polymer layer covering an entirety of the roughened outer surface of the covering of silicone or urethane such that the dissolvable adhesive polymer layer or degradable adhesive polymer layer directly contacts the roughened outer surface of the covering of silicone or urethane,
• wherein adhesive properties of the dissolvable adhesive polymer layer or degradable adhesive polymer layer are activated by exposure to an aqueous environment to increase adhesiveness of the dissolvable adhesive polymer layer or degradable adhesive polymer layer,
• wherein the dissolvable adhesive polymer layer or the degradable adhesive polymer layer degrades over time in the aqueous environment,
• wherein activation of the dissolvable adhesive polymer layer or the degradable adhesive polymer layer increases adhesion of the self-expanding stent to a body lumen and contributes an initial surface tack to the self-expanding stent that is resistant to migration of the self-expanding stent within the body lumen, wherein the dissolvable adhesive polymer layer or degradable adhesive polymer layer is configured to be in contact with an inner surface of the body lumen when the self-expanding stent is disposed within the body lumen;
• a water soluble polymer coated on the dissolvable adhesive polymer layer or the degradable adhesive polymer layer such that the water soluble polymer directly contacts the dissolvable adhesive polymer layer or the degradable adhesive polymer layer.

A self-expanding stent having an inner surface and an outer surface, an entirety of the outer surface of the self-expanding stent comprising:

• a coating of silicone or urethane on the outer surface of the self-expanding stent, said coating of silicone or urethane comprising a roughened surface along an entirety of an outer surface of the coating of silicone or urethane;
• a dissolvable adhesive polymer layer or degradable adhesive polymer layer covering the entire outer surface of the self-expanding stent over the coating of silicone or urethane, wherein the roughened surface facilitates adhesive bonding of the dissolvable adhesive polymer layer or degradable adhesive polymer layer to the outer surface of the coating of silicone or urethane, adhesive properties of the dissolvable adhesive polymer layer or degradable adhesive polymer layer are activated by exposure to an aqueous environment to increase adhesiveness of the dissolvable adhesive polymer layer or degradable adhesive polymer layer, the dissolvable adhesive polymer layer dissolves over time in the aqueous environment or the degradable adhesive polymer layer degrades over time in the aqueous environment, activation of the dissolvable adhesive polymer layer or the degradable adhesive polymer layer increases adhesion of the self-expanding stent to a body lumen and contributes an initial surface tack to the self-expanding stent that is resistant to migration of the self-expanding stent within the body lumen, wherein the dissolvable adhesive polymer layer or degradable adhesive polymer layer is configured to be in contact with an inner surface of the body lumen when the self-expanding stent is disposed within the body lumen;
• and
• a water soluble polymer coated on the dissolvable adhesive polymer layer or the degradable adhesive polymer layer;
• wherein the self-expanding stent is configured to be delivered with an interior tube extending through the self-expanding stent and an exterior tube surrounding the self-expanding stent and maintaining the stent in a first compact configuration, wherein the self-expanding stent is configured such that when the exterior tube is slideably retracted from the self-expanding stent, the self-expanding stent fully deploys to a second expanded configuration.