Described herein is a medical device that has a collapsed configuration and an expanded configuration wherein one or more polymeric network layers are applied to the substrate and microparticles embedded in the polymeric network. The polymeric network layer or layers is/are configured to retain the microparticles when the device is in a collapsed configuration and to release the microparticles when the device is in an expanded configuration. Methods for delivering a therapeutic agent using the device and making the device are also disclosed.
