Patent ID: 11925749
Assignee: FUNAI ELECTRIC CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. A method for preventing a surface of a fluid jet ejection head for a nasal spray device from drying out between uses, the method comprising:
providing a pharmaceutical drug delivery device having a fluid outlet nozzle attached to a drug delivery device body; a fluid jet ejection cartridge disposed in the drug delivery device body, the fluid jet ejection cartridge containing the fluid ejection head in fluid flow communication with the fluid outlet nozzle and a pharmaceutical drug in the fluid jet ejection cartridge;
inserting a sealing material between an outer surface of the fluid jet ejection cartridge and an inner surface of the fluid outlet nozzle, wherein the sealing material contains an elongate, serpentine air flow path therein to provide a humidification zone in the drug delivery device adjacent to a surface of the fluid ejection head between uses of the drug delivery device; and
plugging the fluid outlet nozzle with a cap to prevent drying out of the surface of the fluid jet ejection head.