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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: 0.2s | 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. _qua ◴[08 Apr 25 12:31 UTC] No.43620951[source]▶
A cardiac electrophysiologist advances a catheter into the right ventricle and then deploys this directly onto the heart muscle. This is only a little bit smaller than existing leadless pacemakers which are in wide use.