Maybe it's something more like the insertion of a foreign instrument through the epidermis or into a body cavity that... I dunno. Ears (eardrums), colons, etc

Maybe it's something more like the insertion of a foreign instrument through the epidermis or into a body cavity that... I dunno. Ears (eardrums), colons, etc are tricky to cover all at once. I don't envy the authors of medical literature.