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US 10,869,969 B2Granted
Injection device with protective cap allowing electromagnetic field induction
AssigneeSanofi-Aventis Deutschland GmbH
InventorsStefan Wendland, Michael Harms
Life of this patent
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Abstract
An injection device comprising: a housing arranged to contain a liquid medicament or a medicament cartridge; an electrical coil arranged at the housing; a removable cap arranged to be removably engaged with an end of the housing; and a magnet arranged within the removable cap; wherein when the removable cap is disengaged from the housing, the magnet moves with respect to the electrical coil such that electrical voltage is induced in the electrical coil and a current is generated.
Claims20
An injection device comprising:
- a housing arranged to contain a liquid medicament or a medicament cartridge, the housing comprising a proximal end and a distal end;
- an electrical coil arranged at the housing, the electrical coil comprising a first end and a second end, the first end of the electrical coil being closer to the distal end of the housing than the second end of the electrical coil;
- a removable cap arranged to be removably engaged with an end of the housing;
- and
- a magnet arranged within the removable cap,
- wherein when the removable cap is engaged with the housing, the magnet is positioned within the electrical coil;
- wherein when the removable cap is disengaged from the housing, the magnet moves within the electrical coil from the first end of the electrical coil to the second end of the electrical coil such that electrical voltage is induced in the electrical coil and a current is generated, and
- wherein operation of the injection device is prevented when the removable cap is engaged with the housing.
5 more elements
A method comprising:
- disengaging a removable cap from an injection device such that a magnet disposed within the removable cap moves with respect to an electrical coil comprising a first end and a second end and arranged at a housing of the injection device, inducing an electrical voltage in the electrical coil and generating a current,
- wherein when the removable cap is engaged with the housing, the magnet is positioned within the electrical coil and upon disengaging the removable cap from the housing, the magnet moves within the electrical coil from the first end of the electrical coil to the second end of the electrical coil to induce the electrical voltage in the electrical coil and generate the current,
- wherein operation of the injection device is prevented when the removable cap is engaged with the injection device, and operation of the injection device is permitted when the removable cap is disengaged from the housing.
Dependencies are inferred from the claim text.