New Drug Delivery Device May Treat Retinal Damage Caused by Diabetes
July 5, 2011
The University of British Columbia recently announced that a team of its engineers has developed a drug delivery device no larger than the head of a pin that can be implanted behind the eye for controlled and on-demand release of drugs to treat retinal damage caused by diabetes.
The drug delivery system is triggered by an external magnetic field. The team accomplished this by sealing the reservoir of the implantable device with an elastic magnetic polydimethylsiloxane (silicone) membrane. A magnetic field causes the membrane to deform and discharge a specific amount of the drug, much like squeezing water out of a flexible bottle.
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