Formulation and devices for monitoring the efficacy of the delivery of aerosols

• US 6,349,719 B2
• Filed: 02/26/2001
• Issued: 02/26/2002
• Est. Priority Date: 02/24/1997
• Status: Expired due to Fees

• Current Assignee: Aradigm Corporation
• Original Assignee: Aradigm Corporation
• Inventors: Gonda, Igor
• Primary Examiner(s): Patel, Mital
• Application Number:
  US09/795,025
• Publication Number:
  US 20010010223A1
• Time in Patent Office: 365 Days
• Field of Search: 128/200.14, 128/203.12, 128/203.23, 128/204.23
• US Class Current: 128/200.14
• CPC Class Codes: A61M 15/00 Inhalators drug delivery in endotracheal tubes A61M16/04
• CPC Class Codes: A61M 15/003 using capsules, e.g. to be perforated or broken-up
• CPC Class Codes: A61M 15/0043 Non-destructive separation of the package, e.g. peeling
• CPC Class Codes: A61M 2205/6081 Colour codes

Abstract

Aerosolizable formulations are disclosed comprised of a pharmaceutically acceptable carrier, a pharmaceutically active drug or detectably labeled compound and a compound which is recognized by its distinct color, taste and/or smell even when present in a small amount and a low concentration. Examples of such compounds include menthol, peppermint, cinnamon and vanilla flavors and water soluble dyes. The compounds can be designed so that they are only detectable by a specific area of the tongue or seen under a certain wavelength of light. The degree of detection of the color, taste or smell of the compound is an indication of the degree of success in the delivery of an aerosolized formulation to a patient. The formulation is preferably delivered from a device which monitors and records information relating to the patient'"'"'s respiratory movement and also scans and analyzes the aerosol prior to inhalation. The device sends the user a visual and/or audible signal which informs the user about the character of the aerosol formed. By means of the taste and smell as well as the signal obtained from the device the user is provided with multiple indications of the efficacy of the aerosolized dose delivered.

Claims

1. A method of monitoring aerosol delivery efficacy, comprising:

creating an aerosolized mist of particles 25% or more of which having a diameter in the range of from about 1 micron to about 8 microns wherein the particles are comprised of;

an active compound selected from the group consisting of pharmaceutically active drug and a radioactive labeled compound, and

a sensory compound with a characteristic selected from the group consisting of a distinctive color, a distinctive taste and a distinctive smell;

inhaling the aerosolized mist through the mouth and into the lungs; and

analyzing delivery efficacy to the lungs based on detected color, taste or smell.

2. The method as claimed in claim 1, wherein the active compound is a pharmaceutically active drug.

3. The method of claim 2, wherein the particles are further comprised of a pharmaceutically acceptable carrier.

4. The method of claim 3, wherein the carrier is selected from the group consisting of water, ethanol and a saline solution.

5. The method of claim 2, wherein the pharmaceutically active drug is selected from the group consisting of anti-inflammatory, insulin, an analgesic, a bronchodilator, an antibiotic, an enzyme, a steroid, and an anticholinergic.

6. The method of claim 2, wherein the pharmaceutically active drug is insulin.

7. The method of claim 2, wherein the drug is a narcotic.

8. The method of claim 2, wherein the drug is a monomeric insulin.

9. The method of claim 2, wherein the monomeric insulin is insulin lispro.

10. The method of claim 2, further comprising:

scanning the aerosolized mist with light;

analyzing the aerosolized mist based on the scan; and

providing a user with results of the analysis.

11. The method as claimed in claim 1, wherein the particles are in the form of a dry powder.

12. The method as claimed in claim 11, wherein the sensory compound has a color which distinctly contrasts with surface coloring on a tongue.

13. The method as claimed in claim 11, wherein the sensory compound has a taste detectable on a particular area of a tongue.