he security ramifications of putting every last IV pump on the hospital network are simply too great to deal with, at least at present.
Well actually every last IV pump in our two hospitals, half dozen care centers and dozen medical offices are on a network. Medical devices connect to a wireless SSID with restricted network access. IV pumps shipping now a days record dose information, maintain libraries of drug/time protocols, and can issue a service me request.
As systems get more interconnected, time becomes important. In the last 5 years, NTP has become more and more important to keeping multiple systems running at the same time. I've had to teach vendors how to configure their systems. The Microsoft fan club is particularly bad since they expect system to just synch up with the standard MSFT time servers. Of course those ports are blocked, and those time servers are always off anyway.