Patent ID: 6405934
Filing Date: 2002-06-18
Classification: A61M,B05B

Abstract:
A liquid droplet spray device for atomizing an inhaled liquid substance, comprising:a housing formed of a superposition of a first substrate and a second substrate; a space within the housing and enclosed by said first and second substrates for containing the liquid substance; a supply device connected to supply said liquid substance to said space; a vibrating device disposed to apply a frequency of vibration to said liquid substance thereby generating said liquid droplet spray; and an outlet arrangement disposed to eject said liquid droplet spray when said liquid substance undergoes said vibration, said outlet arrangement comprising at least one cavity arranged in one of said substrates and forming part of said space of said housing; wherein said outlet arrangement is located in said first substrate and said vibrating device is arranged on said second substrate, said outlet arrangement further comprising one or more output nozzles and at least one output channel connecting said cavity to said output nozzles, and wherein said outlet arrangement is disposed such that output nozzles are superposed on vibration mode peaks of a standing wave pattern creatable in said space.