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Smallest Pacemaker Is the Size of a Rice Grain

(www.sciencealert.com)
95 points lnyan | 1 comments | 04 Apr 25 18:10 UTC | HN request time: 0.199s | source
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echoangle ◴[08 Apr 25 06:45 UTC] No.43618988[source]▶
Does anyone know how something like this is injected? It has to be close to the heart so it’s probably not going into the bloodstream. And you can’t really inject something precisely into the heart itself while it is pumping, right? And do you just aim by hand or is there some apparatus that does the alignment so you hit a specific location and depth?
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1. fluidcruft ◴[08 Apr 25 11:59 UTC] No.43620668[source]▶
They mention the use case of temporary pacing after surgery (specifically children where the desolving of the device is a great feature that leaves less abandoned litter behind as the grow).

I imagine if it's useful for adults, something that small will probably be put in using a catheter (similar to how stents often are placed).