| 摘要 |
An infusion system defines a fill path (4) for an infusion liquid from a source (5) to a displacement volume in a fluid chamber (8) of an infusion pump (1), and an infusion path (2) from the displacement volume to a connector (19a). The infusion pump (1) is operated to repeatedly draw infusion liquid from the source (5) into the displacement volume via the fill path (4) and push infusion liquid from the displacement volume through the connector (19a) via the infusion path (2). A controller (11) selectively effects a priming operation, by operating the infusion pump (1) to generate a priming fill stroke, in which a priming volume of the infusion liquid is drawn from the source (5) to the displacement volume, and a priming pump stroke, in which at least part of the priming volume is pushed from the displacement volume back to the source (5). The infusion system is thereby operable to be primed automatically, and proper priming may be verified by evaluating a measurement signal representative of fluid pressure in the displacement volume during either of the priming fill stroke and the priming pump stroke. |
