Self Contained Aerosol Dual Delivery System (SCADDS) is a pocket-sized inhaler
for delivering inhaled therapeutic or recreational aerosols simultaneously and
separately via oral and nasal routes. A handle assembly has a removable mouthpiece,
cartridge penetration needles, puncture needle protective cover, a shuttle, a cam,
valves and conduits from the penetration needles to the individual nozzles for
oral and nasal inhalation. A cartridge contains separate reservoirs of solutions
for oral and nasal inhalation. The reservoirs, impermeable bags with fluid and
dissolved gas in solution, are punctured when the cartridge is attached to the
handle assembly. Inhalation slides the shuttle toward the mouthpiece and opens
the valves to release solution. The oral aerosol is inhaled into the lungs while
the nasal aerosol provides a pleasant aroma. The oral reservoir may be coupled
with a second reservoir for finely divided solids or divided by a filter such that
finely divided solids can interact with the oral solution to further enhance flavor.
Degassed water may be used to enhance organic compound solubility in solutions.
Alternative reservoir bag systems are twin spring driven or gas driven cylinders
to provide proper pressure to aerosolize nasal and oral fluids. Hydraulic intensification,
piezoelectric pumping devices, and electromechanically driven pressure pumps are
alternative pressurization systems.