Smallest Pacemaker Is the Size of a Rice Grain

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?

<i>It has also been designed to dissolve into the body when no longer needed, sparing patients invasive surgery.</i><p>More likely, it will just remain a (hopefully) inert embedded implant. If it has active electronics, and thus semiconductors, I doubt e.g. silicon will dissolve.<p>Edit: care to refute?

There&#x27;s a study underway for a similar implant to help treat sleep apnea. Similar in size, multiple implants can be inserted around the nerves innervating the muscles in the throat. They would be powered by induction using a wearable collar of some sort.<p>Not sure why this one would be controller by light. Can anyone (heh) shed some light on that?

To be fair, that&#x27;s a pretty huge grain of rice.