Ah; not a very high bar, then.
Potentially at least, any "device" that passes or accepts radio transmissions can be open to interference "by others". As you know John, military communications go to great (and expensive) lengths to make radio transmissions secure (channel hopping, sending in short bursts, and what-have-you); and even then they don't always succeed.
Similarly, anything connected to networks, especially "open" networks such as the internet, can't help but be vulnerable to "attack" (just as computers connected to the internet are).
Cellphone ("mobile phone") transmissions can be intercepted (listened to) by "certain agencies", so I expect they can also be corrupted (interfered with) - and certainly shut down.
For me the bottom line is:- why should medical equipment be "connected" at all?
Yes, I understand the advantages - a physician being able to keep an eye on patient parameters via a Smartphone, and so forth - but I believe that (more) serious consideration should be given to:-
1) Whether the advantages outweigh the risks
2) Having equipment transmit
data only (and not receive)
3) If "receive" is a "must" - only allow it over closed (internal, hospital) networks
OK John, there's your synopsis
, right there.