| 摘要 |
<p>A delivery device for delivering a metered amount of substance on each actuation thereof, comprising: a delivery unit (7) a metering cavity (35) in fluid communication with a reservoir (23) and a piston member (43) reciprocatingly movably disposed in the metering cavity (35), the pistion member (43) being movable in a first direction to a first, primed position to draw substance into the metering cavity (35) and a second direction, opposite to the first direction, to a second, delivered position to meter and deliver a metered amount of substance from the metering cavity (35); and an actuation mechanism (9) comprising an actuator member (53). The actuator member (53) is configured to effect the reciprocating movement of the piston member (43) on application of the actuation force (F).</p> |
