Microfluidic cartridge and microfluidic delivery device comprising the same

A microfluidic cartridge, the microfluidic cartridge defining mutually orthogonal X, Y, and Z-axes extending outwardly from a common origin, the microfluidic cartridge comprising:

• a reservoir configured to contain a fluid composition;
• a first face comprising a first opening and a second opening;
• a second face joined with the first face;
• a third face joined with the second face and opposing the first face;
• a fourth face joined with the third face and the first face and opposing the second face, wherein the fourth face comprises a connector;
• an electrical circuit comprising a first end portion and a second end portion, wherein the first end portion of the electrical circuit is disposed on the first face and the second end portion of the electrical circuit is disposed on the second face;
• and
• a microfluidic die disposed on the second face, wherein the microfluidic die is in electrical communication with the electrical circuit and in fluid communication with the reservoir.

A microfluidic delivery device comprising:

• a housing, the housing comprising a first guidepost and a second guidepost, the housing further comprising housing electrical contacts in electrical connection with a power source, wherein the housing comprises a first connector,
• a microfluidic cartridge releasably connectable with the housing, the microfluidic cartridge defining mutually orthogonal X, Y, and Z-axes extending outwardly from a common origin, the microfluidic cartridge comprising:
• a reservoir containing a fluid composition;
• a bottom face comprising a first opening configured to receive the first guidepost and a second opening configured to receive the second guidepost;
• a first side face joined with the bottom face;
• a top face joined with the first side face and opposing the bottom face;
• a second side face joined with the top face and the bottom face and opposing the first side face, wherein the second side face comprises a second connector that is releasably connected with the first connector of the housing;
• an electrical circuit comprising a first end portion and a second end portion, wherein the first end portion of the electrical circuit is disposed on the first face and the second end portion of the electrical circuit is disposed on the second face;
• and
• a microfluidic die disposed on the second face, wherein the microfluidic die is in electrical communication with the electrical circuit and in fluid communication with the reservoir.