Drug delivery devices for medical purposes, namely, inhalers sold filled with inhalable pharmaceutical preparations for the treatment of infectious, viral, bacterial, metabolic, endocrine, exocrine, muscular, skeletal, cardiovascular, respiratory, reproductive, digestive, excretory, renal, oncological, hepatological, ophthalmic, respiratory, neurological, gastrointestinal, lymphatic, integumentary, nervous, hormonal, dermatological, psychiatric and immunological related diseases and disorders...