I am using an injex-30 needleless injector for insulin.
It has an ampule that holds and injects the insulin.
This ampule shattered when i used it to inject 7 units of insulin resulting in minor cuts and a bruise about 4 inches across.
I have had three of the ampules shatter in the past three weeks.
This injector is supposed to inject from 5-30 units.
I have contacted the mfr with little success in resolving the problem.
The first time it happened i did not save the shattered ampule as i thought i had done something wrong, but when it happened two more times with the second resulting in serious bruising due to the plunger sticking out beyond the end of the ampule i did save those two.