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They need a low dead space syringe. I am not MD. However, I guess there must be a reason why the low dead space syringe is not popular.
OK, so that makes some sense as to how a design like this would cause a loss, though I don’t get why anyone would make the syringe on the right. It actually looks more complicated. Your basic insulin syringe doesn’t have any extra space like that.
But also to put that difference of 82ul in perspective, my little bottle of insulin is 10 mL which I assume is 10,000 micro liters. So with 5 shots of Needle A versus Needle B you’d save 410/10,000th of a bottle = 4% or so. It’s not going to make 5 shots per bottle into 6 unless the bottle is very small and there’s rounding.
Not sure what the covid vaccine dose is so can’t do the math on percentage savings, but the 20 units of insulin I might take at 100 units per ml is 200 microliters if I have the math right. Wasting 82 microliters per shot on a 200 ul dose would be pretty nuts, and really stupid for pretty much any product. But if they’re doing 200ul doses they don’t need those big needles in the pictures. They could use an ordinary insulin syringe.
I think when I’ve gotten flu shots its that’s more or less what they do.
eta:
In the picture in the politico article you linked it shows a 300 uL dose, so if that’s meaningful and not just some picture some stuck in there I guess if you really are using 384 uL to get a 300 uL dose the waste is high. Not sure why it would take Covid to figure this out though. Not sure why they can’t use a common insulin syringe.
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