Patent ID: 6354516
Filing Date: 2002-03-12
Classification: A61M,Y10T

Abstract:
A nozzle for aerosolizing a flowable liquid formulation for delivery to a patient, comprising:a sheet of flexible membrane material having an entrance side to which said formulation is applied under a pressure, an exit side from which aerosol is released, and a nozzle area, which nozzle area has a plurality of pores therein through which said formulation is extruded, each of said pores having an entrance aperture and an exit aperture having a pore entrance aperture size and a pore exit aperture size, wherein the ratio of pore entrance aperture size to pore exit aperture size is at least about 10:1, and wherein the membrane material has a thickness in the range of about 10 to about 100 &mgr;m.