METHOD OF FORMING GAS PRE-FILLED SYRINGE PRIOR TO USE AND METHOD OF FORMING GAS PRE-FILLED SYRINGE

摘要

PROBLEM TO BE SOLVED: To provide a unit dose gas filled syringe which is filled with gas and packaged in a gas barrier material prior to use.

SOLUTION: The syringe 12 is filled with a selected gas and sealed inside a container 10 made of a high gas barrier material. The container is also filled with the selected gas. The container material is selected to have a gas transmission rate sufficient to prevent the selected gas from diffusing out of the container into the atmosphere. The volume of gas in the container is set so that the pressure is higher than atmospheric pressure to prevent atmospheric contaminants from entering the container and syringe.

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