INJECTION DEVICE FOR POWDERED DRUGS AND INJECTION METHOD FOR POWDERED DRUGS
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United States of America Patent
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app pub date -
Apr 17, 2014
filing date -
Apr 17, 2013
priority date (Note) -
Abandoned
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Abstract
A device (1) for spraying powdery chemical agent includes a tubular guide member (21) to be installed in a container body (11), a gas generating agent (43) to be housed in a tubular part (26), a tubular rupturing member (31) for breaking a sealing part (41) to allow the gas generating agent (43) to fall in liquid within the container body (11), a piston (63) sliding airtightly against a lower side sliding inner peripheral wall (53) and defining an air space relative to an upper side diameter-enlarged inner peripheral wall (55), and a powdery chemical agent (3) to be stored on the piston (63).
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