IEC standards are international.
EN standards are european. EN means European Norm.
EN IEC is the european implementation of the IEC standard.
There's EN standards which are not IEC or ISO implementation (pure EN, for example EN 13060 on small steam sterilizers).
Standards are voluntary.
Directives are legislations, mandatory.
You can use standards to fulfill requirements of directives.
Yes there is.
Look at this link. It will also show you which ones are published as an EN or other country designation Standard.
I searched the IEC site on "Medical" and this is what popped up...
There's no cross-reference. Stij, in the link you posted, EN is for ENglish, not European Norm. (FR - French, SP Spanish)