Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1997-03-18
1998-05-19
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820321, A61M 1500
Patent
active
057525056
ABSTRACT:
An inhalation type medication delivery device includes a dispenser body having a powder containment chamber at one axial side thereof and an inhalation port for drawing in a powder type medication on the another. An attached lid is provided on the dispenser body for opening and/or closing the powder containment chamber. In addition, an air passage is defined in the body allowing a powder type medication to be introduced into an airflow toward the inhalation port according to inhalation by a user. One end of the air passage opens through the lid towards the outside atmosphere and the other end communicates with the inhalation port while passing through the powder containment chamber. Also, a check valve is installed in the lid to prevent air drawn into said inhalation port from flowing in an outward direction opposite a medication delivery direction toward the inhalation port. Additional efficiency may be achieved by further providing a supplementary passage communicating between the inhalation port and the outside atmosphere independently of the air passage to generate additional suction force during inhalation.
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Ishizeki Kazunori
Nakamura Shigemi
Ohki Hisatomo
Yanagawa Akira
Yazawa Yoshiyuki
Dott Limited Company
Lewis Aaron J.
Unisia Jecs Corporation
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