Controlled release of active agents using inorganic tubules

摘要: The present invention is a composition for, and method of, delivering an active agent at controlled rate. of the hollow ceramic or inorganic microtubule, where contained within lumen microtubules. Typically, adsorbed onto inner surface microtubule. disposing this novel in use environment. In preferred embodiment invention, microtubule tubule having diameter less than 0.2 μm, microtubules are tubules average μm. embodiment, mineral such as halloysite, cylindrite, boulangerite, imogolite. more has biodegradable polymeric carrier disposed its lumen. varies from about 0.20 μm to 0.35 averages 0.40 another 200 Å 1000 Å.