
U.S. Patent No. 4031893, Hypodermic Injection Device Having Means for Varying the Medicament Capacity Thereof
Americans throw away unused epinephrine auto-injectors worth more than $1 billion annually. Or maybe it would be more accurate to say that Americans waste more than $1 billion annually on $50 million worth of epinephrine auto-injectors that are discarded unused. The devices should only cost $20 a pair. So, why do they cost $608 instead?
First, a little background. Severe allergic reactions can result in anaphylaxis, including skin irritation, hives and a person’s windpipe can even begin to swell closed. Children allergic to peanuts or tree nuts are especially a concern since their parents are not always there to supervise them. By some estimates, perhaps 4 percent to 6 percent of children have some type of food allergy. Yet, the likelihood of children suffering anaphylaxis is low. Estimates vary, but a study from Washington State back in the 1990s found only 1 kid in 9,524 had an episode in any given year. A similar study from Minnesota found the rate was one in 1,400. The difference in the prevalence had to do with how strict a definition was used.
In an 
