The danger occurs after they have used a syringe to inject medication into a patient and before disposal. This is when they can accidentally jab themselves. Understanding the problem was the first step. The result of their efforts is a syringe in which the needle is pulled back into the unit after the serum has been injected and the needle has been removed from the patient. Once inside the tube, the needle automatically turns to the side so it can't be pushed out again.
Ideas happen when the time comes.
If you're first and have unique patent claims, you'll succeed. We were the first with the tilting movement of the needle which locks it into the syringe. This simple solution has been licensed to a medical products manufacturer.