Drug Delivery Device with Front Loading Feature

摘要

The invention provides a drug delivery device adapted to receive a cartridge, the cartridge being adapted to receive a needle assembly. The drug delivery device comprises a front-loaded cartridge holder adapted to receive and hold a cartridge in a mounted state and being actuatable between an open loading state and a closed operational state. The drug delivery device is further provided with blocking means configured to prevent the cartridge holder from being actuated between the closed and the open state when a cartridge with a mounted needle assembly is held in a mounted position.

主权项

1. A drug delivery system comprising:
a cartridge comprising:
a cylindrical body portion with an axially displaceable piston,a distal outlet portion and,coupling structure associated with the outlet portion and adapted to engage corresponding coupling structure on a needle assembly, a needle assembly comprising:
a hollow needle having a distal end adapted to be arranged in fluid communication with the cartridge outlet portion, anda hub comprising coupling structure adapted to engage the cartridge coupling structure in a mounted state in which the hollow needle is arranged in fluid communication with the cartridge outlet portion, a drug delivery device comprising:
a front-loaded cartridge holder assembly adapted to receive and hold a cartridge in a mounted state, comprising:cartridge holding structure actuatable between:
an open loading state in which a cartridge can be received in a proximal direction and removed in a distal direction, anda closed operational state in which a received cartridge is held in an operational mounted position, the drug delivery system comprising:
blocking structure configured to prevent the cartridge holding structure from being actuated between the closed and the open state when a cartridge with a mounted needle assembly is held in a mounted position.