I’m wondering if an ace bandage counts as a “medical device” or a training device to prevent tennis elbow.
I wonder if special shoes to prevent shin splints are medical devices.
Maybe high top basketball shoes (prevents ankle sprains) are “medical devices”.
Maybe running shoes (running is good for preventing heart attacks) are “medical devices”. Ditto for swimming suits. Come to think of it, any athletic device is good for health and maybe a “medical device”.
Toothbrushes and tampons count ...