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US Patent 5544646 - Systems for the intrapulmonary delivery of aerosolized aqueous formulations

US Patent Issued on August 13, 1996
Estimated Patent Expiration Date: Icon_subject May 20, 2014Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A disposable package, tape, and cassette are provided which makes it possible to hold and disperse therefrom liquid, flowable formulations including aqueous formulations (solutions or dispersions with particles less than 0.25 microns in diameter) of a pharmaceutically active drug. In one embodiment formulation is packaged in individual dosage unit containers which containers are preferably interconnected. The package is designed to be integrated into a cassette which can be loaded into a dispersing device capable of individually opening dosage unit containers and aerosolizing the contents through a porous membrane, into a mouth piece on the cassette, for delivery to a patient. In addition to and alongside of each porous membrane, the package may include one or more openings through which air is forced in order to aid in avoiding the accumulation of aerosolized particles. The package may be configured so that the formulation is held in a container not positioned directly vertical to and below the porous membrane, thus making it necessary to channel formulation horizontally to the porous membrane and making it possible to include a vibrating mechanism directly below a chamber covered by the porous membrane. Release of aerosolized drug is breath actuated based on simultaneous measurements of inspiratory flow and volume so as to provide for repeatable dosing of drug to the patient.

Other References

  • Byron, P. R., ed., Respiratory Drug Delivery CRC Press, Inc., Boca Raton, FL (1990)
  • Newman et al., "Deposition of pressurised aerosols in the human respiratory tract" Thorax (1981) 36:52-55
  • Newman et al., "How should a pressurized ଲ-adrenergic bronchodilator be inhaled?" Eur. J. Respir. Dis. (1981) 62:3-21
  • Newman et al., "Deposition of pressurized suspension aerosols inhaled through extension devices1-3 " Am. Rev. Respir. Dis. (1981) 124:317-320
  • Costar.RTM. Life Science Filtration Catalog, "Nucleopore.RTM. Polycarbonate Membranes" (1992) p. 7
  • Harrison's Principles on Internal Medicine, "Diabetes Mellitus" (10th ed. 1983) 666-67

Inventors

Assignee

Application

No. 247012 filed on 05/20/1994

US Classes:

128/200.14, LIQUID MEDICAMENT ATOMIZER OR SPRAYER128/200.22, Gas flow induced by expansion chamber device (e.g., piston/cylinder ram, squeeze bulb, etc.)128/203.12Means for mixing treating agent with respiratory gas

Field of Search

128/200.14, LIQUID MEDICAMENT ATOMIZER OR SPRAYER128/200.22, Gas flow induced by expansion chamber device (e.g., piston/cylinder ram, squeeze bulb, etc.)128/203.12, Means for mixing treating agent with respiratory gas222/541.3, Closure or closure portion broken by pressure of container content222/541.4, About line or point of weakness206/531, Structure for "press-out" of content unit206/532With rupture means for access

Examiners

Primary: Lewis, Aaron J.

Attorney, Agent or Firm

US Patent References

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Issued on: 11/09/1976
Inventor: Hillsman
4090642, 4119096, Medical inhalation device for the treatment of diseases of the respiratory tract
Issued on: 10/10/1978
Inventor: Drews
4275840, Package for storing and spraying small amounts of liquids
Issued on: 06/30/1981
Inventor: Staar
4294407, Atomizer for fluids, preferably an inhalation device
Issued on: 10/13/1981
Inventor: Reichl ,   et al.
4334531, Inhalator
Issued on: 06/15/1982
Inventor: Reichl ,   et al.
4361401, Automatic sample deposition in flameless analysis
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4465234, Liquid atomizer including vibrator
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4484577, Drug delivery method and inhalation device therefor
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4533082, Piezoelectric oscillated nozzle
Issued on: 08/06/1985
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4592348, Aerosol inhaler
Issued on: 06/03/1986
Inventor: Waters, IV ,   et al.
4604847, Medicine package, method of opening the package, and machine for performing the method
Issued on: 08/12/1986
Inventor: Moulding, Jr. ,   et al.
4627432, Devices for administering medicaments to patients
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Issued on: 12/13/1988
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Inventor: Matsumoto ,   et al.
4803978, Apparatus for actuating an inhaler
Issued on: 02/14/1989
Inventor: Johnson, IV ,   et al.
4852582, Method and kit for measuring the effectiveness of bronchodilators
Issued on: 08/01/1989
Inventor: Pell
4877989, Ultrasonic pocket atomizer
Issued on: 10/31/1989
Inventor: Drews, et al.
4896832, Dispensing apparatus for metered quantities of pressurised fluid
Issued on: 01/30/1990
Inventor: Howlett
4926852, Medication delivery system phase one
Issued on: 05/22/1990
Inventor: Zoltan, et al.
5033463, Multi-dose inhaler for medicaments in powder form
Issued on: 07/23/1991
Inventor: Cocozza
5114240, Method and a device for preparing a mixture of a solid and a liquid component
Issued on: 05/19/1992
Inventor: Kindt-Larsen, et al.
5134993, Inhalator device, in particular a pocket inhalator
Issued on: 08/04/1992
Inventor: van der Linden, et al.
5152456, Dispensing apparatus having a perforate outlet member and a vibrating device
Issued on: 10/06/1992
Inventor: Ross, et al.
5348191Device for storage and dispensation of measured quantities of pasty materials and process for its embodiment
Issued on: 09/20/1994
Inventor: Dekeyser

Foreign Patent References

  • 0186280 EP. 10/21/1985
  • 8121383 FR. 05/21/1983
  • 2837040 DE. 02/21/1980
  • 4133274 DE 02/21/1993
  • 0530625 DE 03/21/1993
  • 1518998 GB. 07/21/1978
  • 2055046 GB 02/21/1981
  • 2104393A GB. 03/21/1983
  • 2255918 GB. 11/21/1992
  • 2256805B GB. 12/21/1992
  • 0546607 GB 06/21/1993
  • WO90/13327 WO. 11/21/1990
  • WO91/14468 WO. 10/21/1991
  • WO92/07599 WO 05/21/1992
  • WO92/09322 WO. 06/21/1992
  • WO92/11050 WO 07/21/1992
  • WO93/03785 WO 03/21/1993
  • WO93/09832 WO 05/21/1993
  • WO93/17728 WO. 09/21/1993

International Class

A61M 011/00

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