The Nation - News from March 6, 1985

Scientists say they have created a technique for enveloping a local anesthetic in “microdroplets” so that it works like timed-release cold medicine, delivering relief from pain for up to 40 hours with a single injection. The technique promises to give patients safe, effective relief from chronic or surgical pain without hindering healing, said a developer, Dr. Anthony Kirkpatrick, assistant professor of anesthesiology at the University of Illinois at Chicago.