Hydrogels releasing or producing NO, most preferably polymerizable biodegradable hydrogels capable of releasing physiological amounts of NO for prolonged periods of time, are applied to sites on or in a patient in need of treatment thereof for disorders such as restenosis, thrombosis, asthma, wound healing,...http://www.google.de/patents/US7651697?utm_source=gb-gplus-sharePatent US7651697 - Nitric oxide-producing hydrogel materials