WATERTOWN, Mass.--(BUSINESS WIRE)--Acusphere, Inc. announced today the issuance of U.S. Patent No. 7,160,557 B2, entitled “Matrices Formed of Polymer and Hydrophobic Compounds for Use in Drug Delivery.” The patent covers the sustained drug release features of Acusphere's porous microparticle formulations using a biodegradable shell material. These porous microparticle formulations have tightly controlled size distributions, and can allow drugs to be released over periods of time ranging from days to weeks by intravenous, inhalation, subcutaneous, or oral routes of administration. The technology is applicable to both water soluble and water insoluble drugs.
