- You may also be looking for portable regenerator.
In 2377, the Lokirrim detained Seven of Nine, Harry Kim and the Doctor while the three were on an away mission aboard the Delta Flyer. Seven was forced to download the Doctor's program into her cybernetic matrix to prevent him from being detected by the Lokirrim, who believed he was a photonic insurgent. When the Lokirrim found the Doctor's mobile emitter, Seven identified it as her portable regeneration unit to mask its true purpose. (VOY: "Body and Soul")