Dry powder inhalation device having deagglomeration/aerosolization structure responsive to patient inhalation

Patent 5655523 Issued on August 12, 1997. Estimated Expiration Date:

May 22, 2015. Estimated 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.

Abstract Claims Description Full Text

Patent References

3777742

3915165

Inhalation device
Patent #: 3948264
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Medicament dispensing process for inhalation therapy
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Inventors

Application

No. 446446 filed on 05/22/1995

US Classes:

128/203.15, Particulate treating agent carried by breathed gas128/203.12, Means for mixing treating agent with respiratory gas128/203.21Means broken or pierced to supply treating agent

Examiners

Primary: Asher, Kimberly L.

Attorney, Agent or Firm

Griswold; Gary L., Kirn; Walter N., Ringsred; Ted K.

Foreign Patent References

224335 EP. 06/13/1987
2516387 FR. 05/13/1983
2598918 FR. 11/13/1987
2831553 DE. 01/13/1980
2837040 DE. 02/13/1980
898649 GB. 06/13/1962
1479283 GB. 07/13/1977
2061735 GB. 05/13/1981
2108390 GB. 05/13/1983
2122903 GB. 01/13/1984
2166957 GB. 05/13/1986
85/01880 WO. 05/13/1985
90/13328 WO. 11/13/1990

International Classes

A61M 015/00
A61M 016/00
B05D 007/14
B05D 083/06 3

Foreign Application Priority Data

1989-04-28 GB

Abstract

An inhalation device for dry powder containing a chamber capable of receiving a dose of powdered medicament. The chamber is in communication with a patient port in the form of a mouthpiece or nasal adapter. The inhalation device also contains a deagglomeration/aerosolization apparatus capable of deagglomerating and/or aerosolizing a dose of powdered medicament and is operable by a patient-independent energy output source. The inhalation device further includes detection apparatus that ascertains patient inspiration through the patient port, and a control apparatus that actuates the deagglomeration/aerosolization apparatus in response to detection of patient inspiration.