Aerosol inhalation device having slideably and rotatably connected elliptical cylinder portions

A collapsible articulated actuator for the aerosol delivery, of a medicament comprising

• an expansion chamber portion, and an aerosol medicament cannister-receiving portion being slideably receivable inside said expansion chamber and rotatably attached thereto;
• said expansion chamber portion comprising an elliptical cylinder having an eccentricity ranging between about 0.50 and about 0.85 and a volume ranging between about 25 cm.sup.3 and 100 cm.sup.3 and having first and second open ends
• said first open end having mouthpiece means, and
• said second open end having hinging means for rotatably and slideably attaching said cannister-receiving portion;
• and
• said medicament cannister-receiving portion comprising an elliptical cylinder having first and second open ends,
• said first open end having means for slideably receiving and engaging an aerosol cannister of medicament, and
• said second open end having cannister valve-stem receiving means, aerosol spray orifice means, means for slideably and rotatably attaching said cannister-receiving portion to said expansion chamber portion, and stop means for affixing the angle between said expansion chamber and said cannister-receiving portion;
• whereby when said cannister-receiving portion is slideably extended out of said expansion chamber and rotated about said hinging means the angle between the major axes of said cannister-receiving portion and said expansion chamber portion is fixed at about 102.degree. to about 110.degree..