Administration mechanism for a medicament delivery device
AssigneeShl Medical AG
InventorAnders Holmqvist
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an administration mechanism for a medicament delivery device having a movable sleeve, and a delivery member cover having a distal end portion configured to receive the movable sleeve. The delivery member being configured to be linearly displaceable between a first position and a second position relative to the movable sleeve, wherein the distal end portion has an end face defining a guide surface and the movable sleeve has a radially outwards extending first follower structure configured to cooperate with the guide surface when the delivery member cover is moved from the first position towards the second position, causing the movable sleeve to rotate.
Claims19
An administration mechanism for a medicament delivery device, where the administration mechanism comprises:
- a movable sleeve comprising:
- an outer surface, and
- a follower located on the outer surface;
- and
- a delivery member cover comprising:
- a longitudinal axis;
- a distal portion comprising at least one distally extending leg;
- a guide surface located at a distal end of the at least one leg;
- and
- at least one arm that proximally and circumferentially extends from an edge of the at least one leg at an obtuse angle relative the longitudinal axis, where the delivery member cover is configured to be axially displaceable relative to the movable sleeve between a first position, a second position and a third position;
- and
- a first resilient member that biases the delivery member cover in a proximal direction,
- wherein the guide surface comprises an end face that is slidably engaged with the follower when the delivery member cover moves from the first position to the second position,
- wherein the movable sleeve further comprises a lock extending radially from the outer surface and configured to flex radially inward.
An administration mechanism for a medicament delivery device, where the administration mechanism comprises:
- a movable sleeve comprising:
- an outer surface,
- a follower located on the outer surface, and
- a lock positioned on a flexible tongue and extending radially from the outer surface;
- a delivery member cover comprising:
- a longitudinal axis;
- a distal portion comprising at least one distally extending leg;
- a guide surface located at a distal end of the at least one leg;
- and
- at least one arm that proximally and circumferentially extends from an edge of the at least one leg at an obtuse angle relative the longitudinal axis, where the delivery member cover is configured to be axially displaceable relative to the movable sleeve between a first position, a second position and a third position;
- and
- a first resilient member that exerts a proximally directed biasing force on the delivery member cover during movement of the delivery member cover from the first position to the second position and to the third position,
- wherein an inside surface of the at least one leg engages and pushes the lock and the tongue radially inward as the delivery member cover moves relative to the movable sleeve, and
- wherein the guide surface is oblique with respect to the longitudinal axis of the delivery member cover and comprises an end face that is slidably engaged with the follower when the delivery member cover moves from the first position to the second position.
Dependencies are inferred from the claim text.