That's an "industrial" application. Manufacturing plants have been heavily networked for decades. Hospitals are going that way, but security is a problem.
I don't runderstand why you would want to have mesh networks at hospitals. It is a controlled environment where you could roll out a centralised infrastructure easily, with all the benefits of management, traceability and accountability that follows.
There is also "Internet" in IoT. I'm not convinced hospital equipment, like many other control systems, really should be Internet accessible.
I don't what disposable tech exists in hospitals, but zero-configuration mesh means no authentication, and I think most medical data is far too sensitive for that.
No, you can provision new devices into the network automatically. True somebody could be watching; but if they miss it then the device proceeds with secure data streams.
There is also "Internet" in IoT. I'm not convinced hospital equipment, like many other control systems, really should be Internet accessible.