Radial adjusting self-expanding stent with anti-migration features

A medical stent, comprising:

• an expandable framework including a body region formed of one or more interwoven filaments, the expandable framework having a first end, a second end, and a central longitudinal axis extending from the first end to the second end, the expandable framework being configured to expand from a radially collapsed configuration to a radially expanded configuration;
• and
• a polymeric outer sleeve disposed radially outward of the body region of the expandable framework;
• wherein the expandable framework includes a first flared region proximate the first end and a second flared region proximate the second end;
• wherein the body region extends from the first flared region to the second flared region;
• wherein the expandable framework includes a plurality of anti-migration supports extending radially outward from the body region of the expandable framework toward the polymeric outer sleeve;
• wherein the polymeric outer sleeve is attached to the first flared region and the second flared region and is detached from the body region such that the plurality of anti-migration supports spaces the polymeric outer sleeve away from the body region.

A medical stent, comprising:

• an expandable framework including a body region formed of one or more interwoven filaments, the expandable framework having a first end, a second end, and a central longitudinal axis extending from the first end to the second end, the expandable framework being configured to self-expand from a radially collapsed configuration to a radially expanded configuration;
• and
• a polymeric outer sleeve disposed radially outward of the body region of the expandable framework;
• wherein the expandable framework includes a first flared region proximate the first end and a second flared region proximate the second end;
• wherein the body region extends from the first flared region to the second flared region, and the first flared region and the second flared region extend radially outward of the body region in the expanded configuration;
• wherein at least a portion of the one or more interwoven filaments extends radially outward beyond an outer diameter of the body region to form anti-migration loops extending radially outward from the body region of the expandable framework toward the polymeric outer sleeve in the expanded configuration;
• wherein the anti-migration loops are self-biased toward the expanded configuration;
• wherein the polymeric outer sleeve is attached to the first flared region and the second flared region and is detached from the body region such that the anti-migration loops space the polymeric outer sleeve away from the body region in the expanded configuration.