Particle dispersion chamber for nasal nebulizer

• US 10,668,230 B2
• Filed: 07/18/2008
• Issued: 06/02/2020
• Est. Priority Date: 05/09/2002
• Status: Active Grant

• Current Assignee: Savine Therapeutics Pty
• Original Assignee: Kurve Technology, Inc.
• Inventors: Giroux, Marc
• Primary Examiner(s): Yu, Justine R
• Assistant Examiner(s): Miller, Christopher E
• Application Number:
  US12/176,108
• Publication Number:
  US 20090159080A1
• Time in Patent Office: 4,337 Days
• Field of Search: 12820014, 12820017, 12820018, 12820022, 12820312, 12820315, 12820316, 12820318, 12820322, 12820329, 12820424, 12820425, 12820718
• CPC Class Codes: A61M 11/00 Sprayers or atomisers specially adapted for therapeutic purposes in general B05B; aerosol containers B65D83/14
• CPC Class Codes: A61M 11/001 Particle size control
• CPC Class Codes: A61M 15/0008 rotating by airflow
• CPC Class Codes: A61M 15/0028 using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
• CPC Class Codes: A61M 15/0086 Inhalation chambers
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0611 with a gusset portion
• CPC Class Codes: A61M 2206/16 Rotating swirling helical flow, e.g. by tangential inflows
• CPC Class Codes: A61M 2210/0618 Nose

Abstract

A nebulizer and a method of breathing using the nebulizer is described. The nebulizer and breathing techniques are capable of delivering medicament into the sinus cavity of a user.

Claims

1. A method for intranasal drug delivery, comprising:

aerosolizing a medicament to provide aerosolized medicament particles in a size range of 2 to 50 microns;

imparting an unobstructed continuous vortical flow to the aerosolized medicament particles; and

directing the medicament particles through a nasal adapter and into a nasal cavity, while still in the unobstructed continuous vortical flow, to provide for at least one of topical drug delivery sufficiently deep within the nasal cavity to provide for penetration into at least an ethmoid and/or sphenoid paranasal sinus, or systemic drug delivery sufficiently deep within the nasal cavity to provide for penetration into at least the ethmoid and/or sphenoid paranasal sinus;

wherein imparting the unobstructed vortical flow to the aerosolized medicament particles comprises exposing the aerosolized medicament particles to a plurality of directed air outputs from curved tubes along an outer surface of the particle dispersion chamber, the curved tubes extending into the particle dispersion chamber.

2. The method of claim 1, wherein aerosolizing comprises aerosolizing a medicament to provide aerosolized medicament particles in a size range of 15 to 35 microns.

3. The method of claim 2, wherein aerosolizing comprises aerosolizing a medicament to provide aerosolized medicament particles in a size range of 20 to 30 microns.

4. The method of claim 1, wherein aerosolizing comprises aerosolizing a medicament to provide aerosolized medicament particles in a size range of 2 to 15 microns.

5. The method of any one of claims 1 through 4, wherein imparting the unobstructed continuous vortical flow to the aerosolized medicament particles comprises passing the aerosolized medicament particles through an unobstructed particle dispersion channel prior to nasal delivery.

6. The method of claim 5, wherein imparting the unobstructed continuous vortical flow to the aerosolized medicament particles comprises exposing the aerosolized medicament particles to a plurality of directed air outputs configured to impart the vortical flow to the aerosolized medicament particles prior to nasal delivery.

7. The method of claim 1, wherein imparting the unobstructed continuous vortical flow to the aerosolized medicament particles comprises exposing the aerosolized medicament particles to a plurality of directed air outputs from a corresponding plurality of curved channels having individual flow paths along an outer surface of or in a wall of the particle dispersion chamber and extending into the particle dispersion chamber, or from a corresponding plurality of directional output nozzles in the particle dispersion chamber, to impart the vortical flow to the aerosolized medicament particles prior to nasal delivery.

8. A method for intranasal drug delivery, comprising:

introducing a compressed fluid from a nebulizing pressure feed through a compressor channel into a nebulizing chamber, the compressor channel channeling compressed fluid;

introducing a medicament into the nebulizing chamber along with the compressed fluid, thereby aerosolizing the medicament and forming aerosolized medicament particles in a size range of 2 to 50 microns;

directly communicating the aerosolized medicament particles from the nebulizing chamber into a particle dispersion chamber having a particle input end and an output opening and an internal channel between the particle input end and the output opening, the internal channel having a continuous cross-sectional area from the particle input end to the output opening;

providing an output fluid through fluid outputs communicating with the internal channel and thereby directing output forward and imparting an unobstructed continuous vortical flow to the aerosolized medicament particles exiting the dispersion chamber output opening and entering a nasal adapter, wherein the fluid outputs comprise a plurality of directed air outputs from curved tubes along an outer surface of the particle dispersion chamber, the curved tubes extending into the particle dispersion chamber; and

directing the medicament particles through the nasal adapter and into a nasal cavity, while still in the unobstructed continuous vortical flow, to provide for at least one of topical drug delivery sufficiently deep within the nasal cavity to provide for penetration into at least an ethmoid and/or sphenoid paranasal sinus, or systemic drug delivery sufficiently deep within the nasal cavity to provide for penetration into at least the ethmoid and/or sphenoid paranasal sinus.

9. The method of claim 8, wherein the compressed fluid comprises air or another compressible gas.

10. The method of claim 8, wherein introducing the medicament into the nebulizing chamber comprises introducing multiple doses of the medicament into a multi-dose compartment.

11. The method of claim 8, wherein imparting the unobstructed continuous vortical flow to the aerosolized medicament particles comprises exposing the aerosolized medicament particles to a plurality of directed air outputs from a corresponding plurality of curved channels having individual flow paths along an outer surface of or in a wall of the particle dispersion chamber and extending into the particle dispersion chamber, or from a corresponding plurality of directional output nozzles in the particle dispersion chamber, to impart the vortical flow to the aerosolized medicament particles prior to nasal delivery.