A cassette of a medicament delivery device and a medicament delivery device

A cassette configured for use with a medicament delivery device, wherein the medicament delivery device comprises a reusable body comprising a fluid pressure power source, the cassette comprising:

• a container carrier;
• and
• a medicament container with a body and a fluid outlet, wherein the body comprises a flexible portion, and wherein the medicament container is at least partially arranged within the container carrier,
• wherein the container carrier comprises a fluid-tight chamber, wherein the fluid-tight chamber comprises an inlet, wherein the inlet is configured to be fluidly connected to an outlet of the fluid pressure power source of the reusable body of the medicament delivery device,
• wherein the fluid-tight chamber is coupled to the flexible portion of the body of the medicament container so that when the inlet receives output fluid from the fluid pressure power source, the output fluid flows into the fluid-tight chamber and at least part of the medicament contained within the medicament container is pressed out under the pressure of the output fluid,
• and wherein the fluid outlet is configured to be connected to a medicament delivery member of the medicament delivery device when the cassette is attached to the medicament delivery device.