D.C. Mun. Regs. tit. 22, r. 22-B10299
As used in this chapter, the following terms shall have the meanings ascribed:
Initial importer - any person who furthers the marketing of a medical device from a foreign manufacturer to the person who makes the final delivery or sale of the medical device to the ultimate consumer or user, but does not repackage or otherwise change the container, wrapper, or labeling of the medical device or medical device package. The term "initial importer" does not include a common carrier, a delivery agent, or an agent or sales representative of a licensed manufacturer or distributor.
Vendor - any person, with the exception of any agent or sale representative of a licensed manufacturer or distributor, engaged in selling medical devices for the immediate delivery upon purchase.
D.C. Mun. Regs. tit. 22, r. 22-B10299