Self-expanding devices and methods therefor

A method of treating one or more sinus conditions in a patient, the method comprising:

• dilating a paranasal sinus region with an expandable balloon, wherein an expandable device is detachably coupled around the expandable balloon;
• delivering the expandable device to the dilated paranasal sinus region, wherein the expandable device disengages from the expandable balloon, wherein the expandable device is configured to expand from a first compressed configuration to a second expanded configuration for conformation against sinus tissue, and wherein the expandable device is at least partially coated with a drug eluting layer comprising a drug, the drug eluting layer configured to release the drug at a daily dosage of about 500 μg or less per day;
• and
• withdrawing the expandable balloon from the paranasal sinus region after dilation.