US 12,440,624 B2
Electronic add-on module for injection devices
Leos Urbanek, Bern (CH); and Gabriel Kalbermatter, Burgdorf (CH)
Assigned to Ypsomed AG, Burgdorf (CH)
Filed by Ypsomed AG, Burgdorf (CH)
Filed on Mar. 10, 2021, as Appl. No. 17/198,012.
Application 17/198,012 is a continuation of application No. PCT/IB2019/057866, filed on Sep. 18, 2019.
Claims priority of application No. 18195521 (EP), filed on Sep. 19, 2018.
Prior Publication US 2021/0187200 A1, Jun. 24, 2021
Int. Cl. A61M 5/315 (2006.01); A61M 5/24 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/3157 (2013.01) [A61M 2005/2418 (2013.01); A61M 2005/3143 (2013.01); A61M 2205/50 (2013.01); A61M 2205/583 (2013.01); A61M 2205/8206 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An add-on module configured to be mounted on an injection device with a needle affixed at a distal end and extending along a longitudinal axis of the injection device, the add-on module comprising:
a sensor element for detecting a state of the injection device;
a processor for evaluating a signal of the sensor element;
an energy storage device for supplying energy to the processor;
a sleeve-shaped first module part comprising an open distal end, a closed proximal end and holding arms configured to form a positive engagement with recesses of the injection device such that, along the longitudinal axis, the first module part is configured to be connected to the injection device in an axially fixed manner;
a sleeve-shaped second module part comprising an open distal end and a closed proximal end within which the first module part is concentrically arranged; and
a damping element comprising a spring element arranged between a proximal end surface of the closed proximal end of the first module part and a distal end surface of the second module part or a distal end surface of a component axially fixed to the second module part at the closed proximal end thereof,
wherein during insertion of the injection device into the add-on module, the injection device is inserted into the open distal end of the first module part and the injection device and the first module part shifted together against a force of the spring element such that the spring element is moved from a relaxed state into a preloaded position where the injection device forms the positive engagement with the first module part,
wherein upon forming the positive engagement, the second module part is configured to be moved in a distal direction of the longitudinal axis for a damped relative movement with respect to the first module part in which the damping element prevents the proximal end surface of the closed proximal end of the first module part from impacting the distal end surface of the second module part or the component axially fixed to the second module part at the closed proximal end, and during the relative movement, the injection device is non-movable relative to the first module part due to the first module part being connected to the injection device in the axially fixed manner.