Anti-rotation cartridge pin

A system for loading pharmaceutical into a pharmaceutical delivery device comprising:

• a cartridge including a cylindrical reservoir having a longitudinal axis and containing the pharmaceutical;
• a cartridge bay in the pharmaceutical delivery device, said bay sized and shaped to receive said cartridge with said cylindrical reservoir rotated in any of a first orientation and a second orientation rotated around said longitudinal axis;
• a first interference element on said cartridge and a second complementary interference element on said delivery device, wherein
• said first interference element on said cartridge and a second complementary interference element are disengaged when said cartridge is fully received by said bay and said reservoir is in any of said first orientation and said second orientation;
• said first interference element and second complementary interface element interlocking when said cartridge is fully loaded into said bay and said cartridge is in a third orientation around said longitudinal axis, said interlocking preventing rotation of said reservoir around said longitudinal axis in at least one direction,
• wherein the second complementary interference element is longitudinally displaced by said cartridge after the cartridge is inserted into the bay.

A method of loading a pharmaceutical cartridge having a cylindrical reservoir into a delivery device comprising;

• inserting the cartridge longitudinally into a cartridge bay of the delivery device in a first orientation;
• applying a torque to the cartridge with a driver;
• reorienting the cartridge to a second orientation around a longitudinal axis of said reservoir as a result of said applying a torque;
• interlocking an interference element on the cartridge to a complementary interference element on the delivery device to lock the cartridge in said second orientation, said complementary interference element being displaced longitudinally by said cartridge after said cartridge is inserted into said bay;
• discharging a pharmaceutical from the cartridge as a result of continuing said applying and said interlocking.