Patent ID: 8998857
Filing Date: 2015-04-07
Classification: A61M,Y10T

Abstract:
1. A cartridge holder assembly for a drug delivery device comprising: a cartridge holder adapted to receive a cartridge filled with a medicament to be dispensed by the drug delivery device, wherein the cartridge holder comprises a first through opening at a distal end section to receive a piercing element adapted to penetrate a sealing member of the cartridge, a support structure characterized by an intermediary constriction member of circular or disc-like shape arranged between the support structure and a distal most end face of the cartridge and having a second through opening smaller than the first through opening, wherein the constriction member is configured to be received and positioned within the support structure prior to an assembly of the cartridge within the cartridge holder; and wherein the support structure comprises a radially inwardly directed flange portion integrally formed with the cartridge holder, wherein the radially inwardly directed flange portion is adjacently arranged to the first through opening, wherein the radially inwardly directed flange portion comprises a proximal abutment surface to receive the constriction member.