METHOD FOR DELIVERY OF VISCOUS PREPARATION WITH NEEDLE-FREE INJECTION

摘要

PROBLEM TO BE SOLVED: To provide a needle-free delivery device that can deliver a viscous preparation through a hypodermic syringe without giving any pain to a patient.SOLUTION: The device includes: a needle-free injector, a liquid preparation container including a pharmaceutically active drug, and a channel leading from the container to a nozzle exit opening. The ratio of the length of the channel to the diameter of the nozzle exit opening is less than 10. The pharmaceutically active drug is a psychiatric drug. The preparation has a viscosity of about 5 cS or more at about 20°C. The needle-free injector can administer 0.5 ml or more in about 0.1 second.