Medicament guiding assembly for a drug delivery device

摘要

A fluid guiding assembly for a drug delivery device is presented having a first member, a cover part adjacently disposed to the first member and being in non-bonded surface contact with a surface portion of the first member thereby forming an interface area, at least one channel structure extending along the interface area of first member and cover part and being formed by at least one recess in either the first member and/or in the cover part, and a second member being in contact with the cover part and being bonded to the first member by way of injection molding to fix the cover part relative to the first member.

主权项

1. A drug delivery device adapted to dispense a predefined amount of a medicament via an outlet, comprising:
a housing to receive at least one cartridge at least partially filled with a medicament, a dispensing end to dispense a predefined amount of the medicament, and a fluid guiding assembly disposed between the cartridge and the dispensing end, wherein the fluid guiding assembly comprises: a first member, a cover part adjacently disposed to the first member and being in non-bonded surface contact with a surface portion of the first member thereby forming an interface area, wherein the interface area is defined by surface portions of the first member and the cover part that are in direct contact with each other, at least one channel structure located in the interface area and extending along the interface area of first member and cover part and being formed by at least one recess in either the first member and/or in the cover part, wherein the at least one channel structure of the fluid guiding assembly is arranged in a fluid path between the cartridge and the dispensing end, and a second injection molded member being in contact with the cover part and being bonded to the first member by way of injection molding to fix the cover part relative to the first member and wherein there is provided a substance-to-substance bonding between the first and the second member.