| 摘要 |
PROBLEM TO BE SOLVED: To arrange a lubricant of an amount sufficient to provide the proper reduction of friction between an injector barrel and a stopper in the restricted area of an injector. SOLUTION: A medical injector assembly 10 is provided with a first opening and a second opening at both ends of a tube-state barrel 12 with an inner wall. The inner wall includes an inner surface. The stopper with an engaging surface includes a part to be slidably housed in the barrel 12 and to be engaged with the surface of the inner wall of the barrel 12. A lubricant is applied so as to extend in the limited area of at least one member of the inner wall of the barrel 12 and the engaging face of the stopper, thereby it is possible to use the lubricant of the amount sufficient to provide the proper reduction of friction between the inner wall surface of the barrel 12 and the engaging surface of the stopper. |
