I'm pretty certain that there are "luer-lock" type connectors used for NIBP devices that look like luer locks but do not meet the dimensions defined in the relevant manufacturing standards. Hence I wouldn't regard these as much of a risk as a standard luer-lock connection.
Plus it depends where the luer-lock connector is attached. If the male connector is attached to a cuff then the ability to connect the female NIBP connector to a female vascular access device, i.e. line attached to the patient, is limited because a male-male adaptor would be required. So it wouldn't be possible to connect the NIBP device, only the deflated cuff, without an adaptor.
However the risk of this is probably still unacceptable so personally I wouldn't be inclined to use any sort of standard luer-lock connector if it could be fitted or adapted to fit standard luer-lock devices. They should be reserved for vascular access devices only is still the current thinking isn't it?
Saying that it must look like I'm trying to teach you your job, or "teach grandma to suck eggs", as we say, and I shouldn't since you work in the regulatory business and I only service equipment, so I can only give-way to your knowledge of what's involved.
