A medical device including an outer balloon, an inner balloon, and at least one delivery unit is disclosed. The outer balloon defines a first internal cavity that remains in fluid communication with a first inflation lumen. The inner balloon is disposed within the first internal cavity, and defines a second internal cavity that is in fluid communication with a second inflation lumen. Each delivery unit includes at least one needle configured to pierce a tissue and at least one reservoir containing a material. Further, inflation of the outer balloon or the inner balloon is structured and arranged to deliver the material into the tissue through the needle lumen.