Request: spare blower wheel

Hi, i'm searching for a blower wheel from CPAP machine.

I don really need the motor (already have some...) but it would be a "bonus" if you can't properly dismantle the unit.

I dont matter about the type of machine, brand, model etc...but i love respironics impellers... i just need thins kind of "impeller" for a "master" personnal prototype.

I just would like the impeller be in good condition (no scatch, no broken "blades").

If someone can help me.....
My mail: a n t h o n y . l o u i s @ l i v e . f r

Best regards from a "not rich" inventor...
sorry for my poor english (nobody's perfect...I'm french!)