The Cell Phone was basically a successful attempt at replicating Kirk's flip communicator.
The difference is that today's cellphones require a widespread infrastructure of microwave relay towers and/or satellites. And so far, we don't have a cellphone that can communicate directly with a spacecraft in orbit.
Hospital beds today have compact monitors that display the patient's heart rate, breathing rate, blood pressure, and other vital signs. But sensors still have to be physically attached to the patient's body. We've a way to go before we have diagnostic medical scanners like the ones in Star Trek.