Injection device
AssigneeSanofi-Aventis Deutschland GmbH
InventorsPeter Nober, Matthias Rau, David Theysen
Life of this patent
Estimating the term…
Abstract
An injection device comprises a housing for holding a syringe that has a needle at one end and a cap that is removably attached to the housing and has a needle shield to cover said needle (17). The cap further comprises an actuator and a gear assembly comprising first and second linear gears and a double gear (30). The gear assembly is configured such that movement of the first linear gear in a first direction rotates the double gear to drive the second linear gear to urge the needle shield away from the housing. The actuator is configured to move the first linear gear in the first direction.
Claims21
1-17. (canceled)
An injection device comprising:
- a housing for holding a syringe that has a needle at one end;
- a cap that is removably attached to the housing and has a needle shield to cover the needle;
- a gear assembly comprising first and second linear gears and a double gear, wherein the gear assembly is configured such that movement of the first linear gear in a first direction rotates the double gear to drive the second linear gear to urge the needle shield away from the housing;
- and
- an actuator configured to move the first linear gear in the first direction.
A needle shield removal mechanism for an injection device, the needle shield removal mechanism comprising:
- a gear assembly comprising first and second linear gears and a double gear, wherein the gear assembly is configured such that movement of the first linear gear in a first direction rotates the double gear to drive the second linear gear, thereby removing a needle shield from the injection device;
- and
- an actuator configured to move the first linear gear in the first direction.
A method of removing a cap from a housing of an injection device, the method comprising:
- moving an actuator relative to a cap of the injection device or the housing of the injection device to move a first linear gear in a first direction to rotate a double gear, wherein the injection device comprises a second linear gear that is coupled to the double gear such that rotation of the double gear drives the second linear gear to urge a needle shield of the injection device away from the housing.
Dependencies are inferred from the claim text.