| 摘要 |
The pump is provided with a plurality of pumping chambers (2) and electrically activatable valves (14). An elastic membrane (3) is arranged in each pumping chamber (2) and divides the same into a first and a second chamber section (2a, 2b). Each valve (14) is connected to the second chamber section (2a) of a pumping chamber. When a pressure drop is applied over the valve (14) and the valve (14) is activated (i.e. opened), the pressure in the second chamber section (2b) changes, which causes the membrane (3) to move, which in turn leads to a change of the volumes of both chamber sections. This e.g. allows to pump well-defined amounts of fluid from the chamber sections (2a) to a drug dispensing device.
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