| 摘要 |
The present invention is directed to a powder delivery device, comprising a housing; a plunger contained in the housing; and a dispenser component attached to an end of the housing and comprising a reservoir containing powder material; a gating component comprising a first gate having a closed end and an open end, and a second gate; a metering area between the first gate and the second gate; and one or more orifices; the gating component having a first position wherein the second gate is closed and the open end of the first gate permits the powder material to enter the metering area from the reservoir; and a second position wherein the second gate is open and the closed end of the first gate permits the powder material in the metering area to enter the housing and exit the device through the orifices. The device of the present invention can accurately dispense preselected volumes of powdered materials, such as clotting agents for wound treatment.
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