Negative Pressure, Bi-Directional Nasal Aerosol Delivery
First Claim
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1. A method for nasal delivery of an aerosol to a subject comprising the steps of:
- contacting a first conduit with a first of two nasal nares, said first conduit being in fluid communication with a means for generating a negative pressure;
contacting a second conduit with a second of two nasal nares, said second conduit being in fluid communication with a source of aerosol; and
applying a negative pressure to the first conduit, thereby producing a negative pressure within a nasal cavity connecting the two nasal nares and causing the aerosol to be drawn into the first nasal nare and causing at least a portion of the aerosol to deposit on an internal nasal surface.
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Abstract
A method and apparatus for nasal drug delivery comprises a first tube in fluid communication with a means for generating a negative pressure and a second tube in fluid communication with an aerosol. The first tube is contacted with one nostril, the said second tube is contacted with the other nostril, and a negative pressure is applied to the first tube, producing a negative pressure within a nasal cavity and causing the aerosol to be drawn into the nasal passages and to deposit on an internal nasal surface.
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Citations
25 Claims
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1. A method for nasal delivery of an aerosol to a subject comprising the steps of:
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contacting a first conduit with a first of two nasal nares, said first conduit being in fluid communication with a means for generating a negative pressure; contacting a second conduit with a second of two nasal nares, said second conduit being in fluid communication with a source of aerosol; and applying a negative pressure to the first conduit, thereby producing a negative pressure within a nasal cavity connecting the two nasal nares and causing the aerosol to be drawn into the first nasal nare and causing at least a portion of the aerosol to deposit on an internal nasal surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for delivering an aerosol to an internal nasal surface of a human or animal subject comprising:
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means for producing a negative pressure in fluid communication with the distal end of a first conduit, said first conduit having a proximal end configured to form a seal with a first nasal nare of the subject; and an aerosol source in fluid communication with the distal end of a second conduit, said second conduit having a proximal end configured to form a seal with a second nasal nare of the subject. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification