I'd love for this to exist, being a hater of needles. But it seems a bit odd to say:

"""The new injector has yet to be tested on people, but has been used on animals, like sheep, without apparent discomfort. "The sheep did not seem to even be aware that they were being injected," Hunter says"""

Are sheep not herd animals that almost never show discomfort or pain? Something to do with not wanting to get picked off by predators? I've never seen a sheep act hurt. I've even seen one get its back broken by a horse and it just lay there like it was fine.