Patent ID: 9717852
Date: 2017-08-01
CPC Classifications: A61M

Claim:
1. A cartridge holder for a drug delivery device, a holder having a longitudinal axis, an outside surface, an inner section and comprising snap fastening connection means for fastening the cartridge holder to a housing of a drug delivery device, wherein the snap fastening connection means comprises a rectangular window located at a proximal end of the cartridge holder for receiving a locking element of the housing, where the window is a rectangular shaped through opening having four edges and connects the inner section with the outside surface, wherein a first set of notches formed as round contours define two of corners of the window and a second set of notches formed as round contours define two other corners of the window, where the first set of notches are offset from the edges and extend in a circumferential direction with respect to the longitudinal direction and the second set of notches extend in an axial direction along the longitudinal direction, wherein the second set of notches extend less distance in the axial direction compared to a circumferential distance that the first set of notches extend.