Possible Clues:

• Tiny machine
• Microscopic machine
• Small body of medical research
• Minuscule machine
• Futuristic tiny machine
• Granny, shredding boot with this tiny machine..
• Cutting-edge medical device
• Supersmall, futuristic medical device
• Tiny self-propelled machine
• This might pass through a needle's eye — a rich man enters not