By David Goldman and Frank Pallotta @CNNMoney February 27, 2015: 2:59 PM ET
Hypospray
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Dr. McCoy might have been cantankerous, but he didn't stick patients with needles. Instead, he used a device called a hypospray, which sprayed medicine into a patient's blood stream directly through the skin.
Hyposprays exist today, though they're called jet injectors. They're expensive, so they're still not as commonly used as needles. But they're less painful.
