PUMPING DEVICE HAVING IMPROVED EMPTYING DETECTION FEATURES

摘要

Sensor for dynamically detecting the residual fluid volume Vres of a collapsible reservoir (1,3) characterized by the fact that it is adapted to detect a threshold pressure Pth which corresponds to a phase within said reservoir (1,3) when only said residual fluid volume Vres remains, said residual volume Vres corresponding to a safety volume sufficient to ensure a safety margin to alert the user before the reservoir (1,3) is empty.

主权项

1. A reservoir for containing a medical fluid comprising a collapsible wall and at least one access port which communicates with the interior of the reservoir; said reservoir further comprising a biasing means; wherein said biasing means is adapted to temporarily apply a biasing force on said reservoir in such a way that the emptying and/or the filling of said reservoir comprises two distinct phases, at least one constant phase during which the reservoir pressure is substantially constant and at least one variable phase during which said pressure varies.