Bud, Apple didn't get FDA clearance for any hardware. Miniaturized, medical, or otherwise. They got clearance for software. Specifically for an ECG app.
And yes, I know you were referencing a smartwatch ECG function. Still disagree. Samsung is probably about to receive FDA clearance for a blood pressure function on a smartwatch. An equally impressive feat. There will be no fanfare. There will be no claim of Apple not innovating... well, beyond all the claims that already persist for other reasons. Apple gets an outsized amount of praise and they take an inordinate amount of criticism. Part and parcel of being Apple.