Patent ID: 8469233
Filing Date: 2013-06-25
Classification: A61J,A61M

Abstract:
1. A dispensing device comprising at least one chamber for receiving a fluid, a plunger unit comprising at least one piston, each piston being arranged slidingly in one of the chambers, locking means and counter-locking means, wherein the locking means and the counter-locking means can be brought into a locking position in which a movement of the plunger unit in one or both directions is substantially prevented, catching means and counter-catching means which can be brought into an engagement position in which the locking means and the counter-locking means cannot be brought into the locking position and which can be brought into a disengagement position in which the locking means and the counter-locking means can be brought into the locking position, wherein (i) when the catching means and the counter-catching means are in the disengagement position and the locking means and the counter-locking means are in a releasing position in which a movement of the plunger unit is possible in both directions, the locking means and/or the counter-locking means are resiliently supported by a tensioned supporting element, (ii) when the catching means and the counter-catching means are in the disengagement position and the locking means and the counter-locking means are in the locking position, the supporting element is less tensioned than in the releasing position, and wherein in the disengagement position the locking position is obtainable from the releasing position by a release of tension of the supporting element, and wherein this release of tension occurs automatically during retraction of the plunger unit.