The prototype is intended to demonstrate the architecture using a safe bench surrogate—not for patient use.
Syringe connects and introduces fluid into the system.
The check valve limits reverse flow toward the syringe.
Fluid passes through the visually inspectable experimental chamber.
The distal head changes outlet orientation while the main shaft remains stationary.
The commercial atomizer produces visible spray using a safe surrogate.

Physical labels should guide the evaluator from syringe interface to one-way flow control, chamber, distal directional module, atomizer adapter and atomizer.