It says: Medicines, specimens and more sent fast pneumatically.
The tubes are connected from nurses' stations to the pharmacy and laboratory. Instead of having someone deliver medicines or specimens, the nurses just have to place the items in a tight container and voila! It will be sent insatntly to the desired place by just pushing some buttons. (I wasn't able to take pictures at the nurses station, sorry guys)
How I wish all hospitals have this technology. It can really save time and manpower too!