I love the pair of 'em!!!

I think this one, the Deutsche Orthopadische, is my favourte of the pair, with bodywork that almost looks like a Harper Mk 6 if you squint a bit. Bert Girmmer's got a vehicle very similer to this in his collection I see from his website.
Of the other one, I'm not sure if its just the body that's homemade or if the whiole thing is.

Its certainly not a Simson (or Krause to be precise) Duo, that much I can tell everyone. But it's still lovely all the same....
It looks to me, Ferdi, as though your Germany had just as varied a range of krankenfahrstuhl's as our England did with its invalid carriages. I don't supose you know if there have ever been any magazine articles or books on the subject published in Germany at any time? If so, I'd love to know......