1 Calories Burned For Walking: 4.6 km/h (13 minutes per km). 2  Calories Burned For Walking: 4 km/h (15 minutes per km). 3  Calories Burned For Walking: 3.15 km/h (19 minutes per km).
The first true hypodermic syringe was created by Alexander Wood in 1853. He modified a regular syringe, which at that time was used for treating birthmarks, by adding a needle. He then used this new device for introducing morphine into the skin of patients who suffered from sleeping disorders.
Updated August 18, 2016. Forms of intravenous injection and infusion began as early as 1670, but Charles Gabriel Pravaz and Alexander Wood were the first to develop a syringe with a needle fine enough to pierce the skin in 1853. It was the first used to inject morphine as a painkiller.