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US 11,951,287 B2Granted
Pneumatic power pack
AssigneeShl Medical AG
InventorSlobodan Stefanov
Life of this patent
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Abstract
A pneumatic power pack for a medicament delivery device is presented having a pressurized gas container storing pressurized gas and an activation assembly for releasing the pressurized gas from the gas source. The activation assembly including a rupturer having a sharp end, an activator, and a rotator coupled with the activator and the gas container. The activator is configured to move from a first position toward a second position to causes a rotation of the rotator which then drives the gas source towards the sharp end of the rupturer to release the pressurized gas.
Claims11
A pneumatic power pack, comprising:
- a pressurized gas container storing pressurized gas;
- a rupturer having a sharp end positioned adjacent the pressurized gas container;
- a needle shield having a proximal end and a distal end;
- a first rotator having a proximal end and a distal end, wherein the distal end of the needle shield is positioned adjacent the proximal end of the first rotator;
- and
- a second rotator coupled with the first rotator and the gas container,
- wherein, in response to the proximal end of the needle shield contacting an injection site, the first rotator is configured to move in a distal direction, and
- wherein the movement of the first rotator in the distal direction causes a rotation of the second rotator which then drives the pressurized gas container towards the sharp end of the rupturer to thereby release the pressurized gas.
5 more elements
Dependencies are inferred from the claim text.