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.
Pen Needles. Insulin pen needles and syringes are the most commonly used device by diabetics for injecting insulin. Although injecting with the use of syringe is still the most predominant method, more people are seeing the benefits of using insulin pen device and diabetic pen needles. Insulin pens came out in mid 1980s when the only method known is through syringe injection.