TrumPower has created a range of wall-plug power supplies for medical use. Called TM30W, there is a choice of 10 set output voltages between 5 and 48Vdc, at 20 – 30W depending on voltage (30W at 12V and above). A choice of mains plug interfaces, or an interchangeable version, allow the PSUs to fit UK, European ...

This story continues at Wall-mount 20-30W medical-grade power adaptor

Or just read more coverage at Electronics Weekly