Method of fabricating porous membrane with unique pore structure for aerosolized delivery of drugs
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United States of America Patent
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Apr 22, 2003
Issued Date -
N/A
app pub date -
Nov 8, 2000
filing date -
Nov 16, 1998
priority date (Note) -
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Abstract
A method for producing a nozzle useful in generating a fine aerosol for delivery of therapeutic or diagnostic agents is provided. The method comprises focusing a laser source onto a thin, preferably flexible material so as to form pores substantially through the material. The pores are formed to have an unflexed exit aperture diameter in the range of about 0.5 to about 25 microns, depending on the size of the aerosol particles desired for a particular application. The nozzle may have a variety of shapes and be distributed in a variety of patterns. An elevated area can be formed around the exit aperture of the nozzle in order to prevent intrusion of liquid into the nozzle.
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