Medicament delivery device with piezoelectric actuating system
AssigneeShl Medical AG
InventorNurettin Ali
Life of this patent
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Abstract
An actuating system for a medicament delivery device is disclosed. The actuating system includes a first clamp arranged around a plunger of the medicament delivery device for selectively retaining and releasing the plunger. A piezoelectric actuator is coupled to the first clamp for moving the plunger via a plurality of consecutive steps. An electric controller is configured for controlling the piezoelectric actuator and the first clamp independently to coordinate the moving of the plunger.
Claims20
1-15. (canceled)
An actuating system for a medicament delivery device, the actuating system comprising:
- a first clamp arranged around a plunger of the medicament delivery device for selectively retaining and releasing the plunger;
- a piezoelectric actuator coupled to the first clamp for moving the plunger in a first direction via a plurality of consecutive steps;
- and
- an electric controller configured for controlling the piezoelectric actuator and the first clamp independently to coordinate the moving of the plunger.
A medicament delivery device, comprising:
- a syringe barrel having a reservoir therein for holding a medicament;
- a nozzle disposed at a first end of the syringe barrel with at least one opening for allowing the medicament to be expelled from the reservoir;
- a plunger received at a second end of the syringe barrel;
- and
- an actuating system for ejecting the medicament from the reservoir, wherein the actuating system comprising:
- (i) a first clamp arranged around the plunger for selectively retaining and releasing the plunger;
- (ii) a piezoelectric actuator operatively connected to the plunger for moving of the plunger in a first direction via a plurality of consecutive steps;
- and
- (iii) an electric controller configured for controlling the piezoelectric actuator and the first clamp independently to coordinate the moving of the plunger.
An actuating system for a medicament delivery device, the actuating system comprising:
- a first clamp operatively engaged with a plunger of the medicament delivery device in a retained position and in a. released position;
- a first piezoelectric actuator coupled to the first clamp for moving the plunger in a first direction;
- a second piezoelectric actuator;
- and
- an electric controller that expands and retracts the second piezoelectric actuator to move the clamp between the retained and released positions and moves the plunger and the first clamp together in the first direction when the first clamp is in the retained position.
Dependencies are inferred from the claim text.