Well I tried to pull the thread back from insanity. It’s fishy, but I really don’t think an IV is possible. Neither is a 2 piece mic/receiver. Probably a pen. Others have said as much. There’s no need to push this stuff.
Looked like a pen to me, and I’m a retired RN. Still sneaky, though; most men carry their pens in their breast pocket. Biden was being sneaky, by hiding it in his sleeve.