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The electronic medical record is software, not a tangible device. Nor is Emergency Medical Response. But Electro - Magnetic Radiation could be.
Yes the contact lens is a medical device and you need a prescription form an eye doctor to order them (especially online).
Go here for a summary of the basics! http://kirkkitchenconsulting.pbwiki.com/FDA%20Medical%20Device%20Regulations
"What are the classifications of computer devices?". super computer,mainframes,minicomputer,personal computer,notebook computers for further informations, visit www.google.com