Harold:
To answer the OPs issue, careful reading of the details are required for this particular situation.
As I understand it finally, there is a switch built into the light above the patient bed. This switch controls a receptacle that the bed controls are plugged into. The IV pole at the bed activates this switch to terminate power to the bed controls IF the IV pole hits the switch, which is intended to protect the light from damage from the IV pole.
Sounds to me like a mfg installed safety device for the particular installation, which IMHO is beyond the jursidiction of the Electrical AHJ.
