Regulation of maggots and leeches

Noted in this interesting article about medical uses for flesh-eating maggots (healing festering wounds) and bloodsucking leeches (draining excess blood in hand reattachment surgery):

But neither leeches nor maggots have ever been subject to thorough regulation by the Food and Drug Administration. So the medical advisers are being asked to create general guidelines about how they should be safely grown, transported and sold.

In addressing it, officials first had to decide which part of the agency had oversight: its biological or device division.

"The primary mode of action for maggots is chewing," said Mark Melkerson, acting director of the Division of General, Restorative and Neurological Devices. "For leeches, it's the eating of blood. Those are mechanical processes." Thus, the agency decided that maggots and leeches were devices, Mr. Melkerson said.