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DAILY injections can be a pain in the backside, literally. A new drug-release implant that could deliver timed doses for a year may provide some relief.
Inserted under the skin, it features a chip with a number of metal-walled wells containing a drug. ...Each well is wired to a battery. When an electric current is applied to a well, part of the container melts, releasing the drug. The current can be controlled from outside the body or can be pre-programmed (Nature Biotechnology, DOI: 10.1038/nbt1199).
Microchips has licensed the technology to a company that plans to insert a smaller version of the device into the eyes of people with macular degeneration.