Administering device with priming function
AssigneeTecPharma Licensing AG
InventorsAnjan Selz, Manfred Rettenbacher, Fritz Kirchhofer
Life of this patent
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Abstract
An administering device, e.g. an injection device, includes a housing, a reservoir for a drug, the reservoir formed or accommodated by the housing, a dosing member which can perform a dosing movement relative to the housing for setting a dosage of the drug to be administered and a conveying member for delivering the dosage set, wherein the dosing member is blocked or locked in the direction of the dosing movement in a releasable dosing blocking engagement in an initial state of the administering device and released from the block at the end of a priming movement of the conveying member.
Claims23
An administering device comprising:
- (a) a housing;
- (b) a reservoir for a liquid drug, the reservoir formed or accommodated by the housing;
- (c) a dosing member which can perform a dosing movement relative to the housing for setting a dosage of the drug to be administered;
- and
- (d) conveying means comprising a conveying member for delivering the dosage set,
- wherein in an initial state of the administering device, the dosing member is blocked in the direction of the dosing movement in a releasable dosing blocking engagement between a dosing blocking element of the dosing member and an abutment of the housing,
- wherein during a priming movement of the conveying member, the dosing member is moved in an advancing direction against an elastic restoring force of the dosing blocking element by a force acting in the advancing direction such that the dosing blocking element elastically flexes transverse to the advancing direction and overcomes the abutment of the housing to release the dosing blocking engagement,
- wherein the dosing member is rotatable about a rotational axis for performing the dosing movement relative to the housing when released from the dosing blocking engagement,
- wherein the conveying member is axially moved relative to the reservoir in the advancing direction for delivering the dosage set,
- wherein the conveying member moves into a retaining engagement with a retaining element, which causes the conveying member to adopt a delivery position when the dosage set has been delivered, the retaining engagement blocking or at least obstructing a movement of the conveying member counter to the advancing direction, and
- wherein the conveying member is in an abutting contact with the retaining element counter to the advancing direction in the retaining engagement.
Dependencies are inferred from the claim text.