Astra Zeneca U.k. Limited

Malcolm John Henderson

Masafumi Aramata

Toshikazu Hirayama

A pre-filled syringe comprising a glass barrel (), a sealing member () fitted in a medical liquid discharge port () of the barrel (), a tip member () mounted around the sealing member () on the medical liquid discharge port () of the barrel (), a closing member (), a cap member (), and a holding member (); the sealing member () having a through-hole () formed in the axial direction; the tip member () including a skirt () provided with an engagement pawl () on the inner wall of a lower end thereof, a top wall (), a needle mounting portion (), and a medical liquid deriving portion (), and being provided with a medical liquid passage (); the closing member () being inserted into the medical liquid passage () and the through-hole () to close the through-hole () and so prevent oxygen contamination and deterioration of the medical liquid.

Growing community of inventors

Macclesfield, United Kingdom

Malcolm John Henderson