N-substituted 4-aza-caprolactone biodegradable polymers, including derivatives thereof, useful for making implantable medical devices and coatings therefore are provided. The medical devices and coatings of the present invention can also be used for in situ controlled release drug delivery and are useful...http://www.google.com/patents/US8137687?utm_source=gb-gplus-sharePatent US8137687 - 4-aza-caprolactone-based polymeric compositions useful for the manufacture of biodegradable medical devices and as medical device coatings
