US 10,537,685 B2Granted

Dosing mechanism for an injection device for administering a product

AssigneeTecPharma Licensing AG

InventorsSusanne Schenker, Ursina Streit, Patrick Hostettler

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Abstract

A dosing mechanism for an injection device includes a dose-setting element with a first element coupled thereto, which, during dose setting, is rotatable relative to a second element about a main rotation axis in a first direction and, during dose discharge, is fixed in rotation relative to the second element. The first and the second elements are coupled via a sleeve-shaped stop element, which forms a stop abutment. The dosing mechanism includes a stop, and the stop abutment, during the rotation of the first element in the first direction, executes a movement to a stop position where the stop abutment strikes the stop and prevents rotation of the first element relative to the second element in the first direction of rotation. The sleeve-shaped stop element is rotatable about a secondary rotation axis, which is offset parallel to or offset at an angle to the main rotation axis.

Claims16

Dependent claims

A dosing mechanism for an injection device, comprising:

a dose-setting element coupled to a first element, which, during a dose setting, is rotatable relative to a second element about a main rotation axis in a first direction of rotation and, during a dose discharge, is fixed in rotation relative to the second element, wherein the first element and the second element are coupled via a sleeve-shaped stop element, which forms a stop counter abutment and which surrounds at least one of the first element or the second element;
and
a stop abutment, wherein the stop counter abutment, during a rotation of the first element in the first direction of rotation moves to a stop position in which the stop counter abutment strikes the stop abutment and prevents the rotation of the first element relative to the second element in the first direction of rotation, and
wherein the sleeve-shaped stop element is rotatable about a secondary rotation axis that is offset parallel to or offset at an angle to the main rotation axis.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/262,824Filed 12 Sep 2016 · continuation
Priority: EP 1415963513 Mar 2014
Published: US 2017/0035973 A19 Feb 2017
Granted: 21 Jan 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61M 5/3155
Mechanically operated dose setting member: by rotational movement of dose setting member, e.g. during setting or filling of a syringe
A61M 5/20
Syringes: automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
A61M 5/31541
Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset…
A61M 5/31553
By rotational movement of dose setting member, e.g. during setting or filling of a syringe: without axial movement of dose setting member