The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 1998
Filed:
Mar. 18, 1997
Hisatomo Ohki, Gunma, JP;
Shigemi Nakamura, Gunma, JP;
Kazunori Ishizeki, Gunma, JP;
Yoshiyuki Yazawa, Gunma, JP;
Akira Yanagawa, Yokohama, JP;
Unisia Jecs Corporation, Atsugi, JP;
Dott Limited Company, Yokohama, JP;
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.