A method of establishing a flow delivery rate of a medicament delivery device

A method of establishing a flow delivery rate of a medicament delivery device, wherein the medicament delivery device comprises a body containing a medicament, a delivery member for delivering the contained medicament to a user, and a tube extending between the body and the delivery member, the tube is configured to deliver the contained medicament from the body to the delivery member, the method comprising the following steps in the following order:

• obtaining time information containing the amount of time (T) needed for the medicament to be warmed up to a target temperature;
• obtaining the information of the volume of the tube (V);
• and
• establishing a flow delivery rate within a range calculated by the following equation:
• 0
• <
• Q
• <
• V
• T
• where T is the obtained amount of time;
• V is the volume of the tube;
• and Q is the range of the flow delivery rate,
• wherein the contained medicament within the body is configured to be delivered to the tube with the established flow delivery rate.

A tube of a medicament delivery device, wherein the medicament delivery device comprises a body containing a medicament, a delivery member for delivering the contained medicament to a user;

• wherein the tube is configured to extend between the body and the delivery member, the tube is configured to deliver the contained medicament from the body to the delivery member;
• the tube comprising:
• a source end configured to be fluidly connected to the body of the medicament delivery device;
• a delivery end configured to be fluidly connected to the delivery member of the medicament delivery device;
• and
• a tube body extending between the source end and the delivery end,
• wherein the tube further comprises a heat-exchanging element attached to the tube body, and/or
• wherein a length of the tube body extending from the delivery end is wound in a serpentine or spiral pattern, and/or
• wherein the tube body comprises a thermally conductive additive.