To answer the questions you pose regarding what we might call "minor items" of medical equipment and (presumably) equipment (some of which may not be "minor") issued to patients in the Community:-
1) Is maintenance performed on a regular basis? Ideally yes; but in practice probably not. Community nurses et al and staff issuing and receiving items need to be encouraged (have an obligation) to report faults to whomever is responsible for repairs (condemnation or what-have-you). Community nurses should be able to "swap out" equipment and bring it in for servicing (PM) when such work is due. I have seen some Loan Stores with a Biomed Tech permanently assigned (and working within the store); in such cases the Tech may actually run the service.
2) Is there anybody trained to perform inspections, maintenance and repairs? Yes; of course. Loan Store staff should be able to carry out a quick "once over" (checking for damage ... and, indeed, completeness) as items are returned to the store. See 1) above regarding the "in-store" biomed.
3) Do you have a Central Equipment Library for Medical Devices? Yes; almost all hospitals have these now.
4) Who do both these departments report through to? Management, hopefully (unless they are Laws Unto Themselves - as some may think they are). I should imagine that the Chief of Biomed (other job titles may be available) may keep an eye on them. Some may come under Property Control. Either way (and as alluded to in the previous post), like all Stores they need to be checked by someone higher up the Food Chain from time to time (that is:- physically check the items within the store, confirm the locations of items loaned out, examine records made since the last visit ... and pursue any and all descrepencies).