We have two unused mounting brackets for the Oxylog ventilators.
The part number is AB40461L and they are described as "Carry System 2000".
We bought them for use in our HDU and discovered they are actually for mounting in an ambulance. When we tried to send them back, Drager refused to accept them - even though it was them who gave us the part number etc. ! It's likely they could be modified to use the mains charger rather than a 12v supply - if anyone is feeling brave enough.
They are now gathering dust in our loft, so if anyone can make use of them please make me an offer.