Coupling system comprising: a base member connectable to a patient transport system, and a positioning member releasably couplable to the base member and equipment; the base member comprising: a recessed portion for receiving a positioning member end portion and having an opening defined in a base; and a retractable stop member in the recessed portion and moveable between extended and recessed positions and which is resiliently biased to the extended position; the positioning member comprising: an end portion receivable in the recessed portion and engageable with the retractable stop member when the positioning member is positioned in the recessed portion.
