All Weather Hospital Heliport

This idea may well be baked as my understanding of helicopter landings relies entirely on medical drama television with flashing lights and wind blown about the face as people rush across open helipads. What I can't quite grasp or find information about is what happens when it is raining or snowing when the helicopter lands and then patients need to be transported a considerably long distance in this weather. Medical umbrellas?

Anyways, so im thinking - the helicopter should come flying onto the roof of the hospital to land within a marked circle or rectangle shape that is a little larger than the area of the cabin of the craft. Once landed, an hydraulic system lowers the entire helicopter cabin down (even as the rotors are slowing down or still spinning to save time) to a level under the helipad - which is the top floor of the hospital. It would only need to lower down far enough so that the patient could be removed and whisked into the emergency section - then the hydraulic deck is lifted again back up to roof level and copter can take off again if required.

The main problem I foresee here would be noise on the top floor of the hospital, but this could be countered with internal sound chambers in a series of sealed sections with doors - kind of like a photographic dark room.

The only thing I can find is a ramp and stair system to the side, that has a similar approach to this idea, but doesn't really resolve raindrops on bleeding heads - see link