It is Possible to apply a wall plug power adapter to provide power from the actuators of a dialysis chair or hospital bed?

[Markhazy]

There are many control system solutions for dialysis chairs and hospital beds in the market. Every system uses control boxes with internal power supply which is located on the chair and it is tied down on the metal frame or one of the actuators.

It is possible that a power supply which is met the 60601 related requirements it can be located outside of the chair according to the 60601 standard? So it can be supply the moving actuators of a hospital bed or dialysis char from a wall plug power adapter?

In short a wal plug power adapter pluged into the wall socket, and its output cabel reach to the chair. This cabel it is a low voltage (24 ... 29 V DC) so it can be even more safer than the cabel which is runs mains voltage and connected to the control box which is located on the chair.

What are your thoughts on this?
Regards
Peter

 

[Peter Selvey]

There is no problem in principle to have a wall plug power adaptor.

The main limitation is that the motors for moving chairs and beds are fairly powerful. These are typically 24V motors but may require ~10A wiring. It makes sense to house this high current wiring in the body of the equipment to limit the length, control the gauge, connectors and switching rather rely on external cables, connectors and switching which may cause trouble both in short and long term installation.