US 12,403,264 B2
Dosing system for an injection device
Simon Scheurer, Bern (CH); Patrick Hostettler, Hasle (CH); and Jürg Hirschel, Bern (CH)
Assigned to Ypsomed AG, Burgdorf (CH)
Filed by Ypsomed AG, Burgdorf (CH)
Filed on Sep. 7, 2021, as Appl. No. 17/467,908.
Application 17/467,908 is a continuation of application No. PCT/EP2020/055385, filed on Mar. 2, 2020.
Claims priority of application No. 19163197 (EP), filed on Mar. 15, 2019.
Prior Publication US 2021/0393885 A1, Dec. 23, 2021
Int. Cl. A61M 5/315 (2006.01)
CPC A61M 5/31551 (2013.01) [A61M 5/3157 (2013.01); A61M 5/31585 (2013.01); A61M 5/31528 (2013.01); A61M 5/31533 (2013.01); A61M 5/31548 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A dosing device for an injection apparatus for dispensing a dose of a product, comprising:
a housing having a longitudinal axis;
a dose setting element configured as a dosing sleeve for setting the dose;
a holding element, wherein the holding element is coupled to the dosing sleeve such that the holding element and the dosing sleeve are rotatable but axially fixed relative to each other; and
a coupling sleeve for driving a drive device to dispense the dose, wherein at least a portion of the dose setting element, the holding element, and the coupling sleeve are arranged in the housing,
wherein for setting and correcting the dose, the dosing sleeve, the holding element and the coupling sleeve are configured to be moved relative to the housing in the direction of the longitudinal axis, and the coupling sleeve is configured to be held in a rotationally fixed manner relative to the housing by the holding element,
wherein for dispensing the dose, the coupling sleeve is releasable by the holding element, such that the coupling sleeve is rotatable relative to the housing, and
wherein the housing comprises a guide in which the holding element is displaceable along the longitudinal axis relative to the housing during the setting and correction of the dose, such that the holding element is guided in a rotationally fixed manner relative to the housing.