A medical device for treating a body lumen, such as a medical stent, includes an expandable scaffold configured to move from a radially collapsed state to a radially expanded state. The stent includes a coating disposed along an exterior surface of the expandable scaffold, wherein a portion of the coating includes a plurality of anti-movement members and one or more preferential separation regions. Each preferential separation region allows the first and second regions of the coating to separate from each other along a preferential separation region therebetween as the expandable scaffold moves from a radially collapsed state to a radially expanded state. is configured to
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