Method of operating a nasal drug delivery device

A method of operating a nasal drug delivery device, comprising:

• moving an actuation button of a nasal drug delivery device, the nasal drug delivery device including a housing, an outlet, a medicament container containing a powdered medicament, a compressed gas container containing a compressed gas, wherein a fluid flow communication between the medicament container and the compressed gas container is closed prior to movement of the actuation button, a first needle, and a second needle;
• moving the first needle for piercing the medicament container in response to movement of the actuation button;
• and
• piercing the compressed gas container with the second needle by moving the compressed gas container toward the second needle in response to movement of the actuation button, wherein when the medicament container and the compressed gas container are pierced the fluid flow communication between the medicament container and the compressed gas container is opened for expelling the powdered medicament from the medicament container out of the outlet.

A method of operating a nasal drug delivery device, comprising:

• moving an actuation button of a nasal drug delivery device, the nasal drug delivery device including a housing, an outlet, a medicament container containing a powdered medicament, a compressed gas container containing a compressed gas, wherein a fluid flow communication between the medicament container and the compressed gas container is closed prior to movement of the actuation button, and a double-sided hollow needle having a first end and a second end;
• piercing the medicament container with the first end of the double-sided hollow needle in response to movement of the actuation button;
• and
• piercing the compressed gas container with the second end of the double-sided hollow needle in response to movement of the actuation button, wherein when the medicament container and the compressed gas container are pierced the fluid flow communication between the medicament container and the compressed gas container is opened for expelling the powdered medicament from the medicament container out of the outlet.