Drug delivery assembly including a pre-filled cartridge

A main body for use in combination with a drug delivery cartridge including a cartridge housing having a cartridge interface, a cartridge latch, a drug reservoir including an outlet and containing a medicament positioned within the cartridge housing, a piston movably associated with the drug reservoir, a spring associated with the piston and configured to bias the piston toward the outlet of the drug reservoir, and a seal preventing flow of the medicament out of the drug reservoir via the outlet, the main body comprising:

• a body housing having an upper surface, a lower surface, and a body interface, the body housing including a body latch and defining a docking area configured to receive at least a portion of the cartridge so as to associate the body interface to the cartridge interface and to detachably or permanently associate the body latch with the cartridge latch;
• a fluid flow path extending through the body housing between a first end and a second end, the second end configured to enter a human body;
• a valve associated with the fluid flow path and configured to alternately allow and prevent fluid flow between the first and second ends of the fluid flow path;
• a controller;
• and
• an adhesive pad associated with the lower surface of the housing, the adhesive pad configured to removably attach to a human body surface, wherein
• the first end of the fluid flow path is configured to engage and open the seal when the cartridge housing is at least partially received by the docking area so as to place the fluid flow path into fluid communication with the outlet of the drug reservoir, and
• the controller is configured to actuate the valve to selectively allow and prevent fluid flow through the fluid flow path during a drug delivery routine.

A drug delivery cartridge for use in combination with a main body including a body housing having an upper surface, a lower surface, and a body interface, the body housing including a body latch and defining a docking area, a fluid flow path extending through the body housing between a first end and a second end configured to enter a human body, a valve associated with the fluid flow path, and an adhesive pad associated with the lower surface of the body housing and configured to removably attach to a human body surface, the cartridge comprising:

• a cartridge housing sized and configured to be at least partially received by the docking area, the cartridge housing including
• a cartridge interface configured to be associated to the body interface when the cartridge housing is at least partially received by the docking area, and
• a cartridge latch configured to detachably or permanently associate with the body latch when the cartridge interface is associated to the body interface;
• a drug reservoir positioned within the cartridge housing, the drug reservoir including an outlet and containing a medicament;
• a piston movably associated with the drug reservoir;
• a spring associated with the piston and configured to bias the piston toward the outlet of the drug reservoir;
• and
• a seal preventing flow of the medicament out of the drug reservoir via the outlet, wherein
• the seal is configured to be engaged and opened by the first end of the fluid flow path when the cartridge housing is at least partially received by the docking area so as to place the outlet of the drug reservoir into fluid communication with the fluid flow path, and
• the drug delivery cartridge omits a controller.