I doubt that you'll be seeing any of those
again; I imagine they will all be long gone.
Anyway, let me put that right for you:-
"... the patients families don't realise care
how expensive bits of kit are and they get thrown away before we can retrieve them".
And, "thrown away"? - or "sold"?
Or, put another way, maybe they have
realised how valuable they are.
Either way, the solution is:- bill