The invention belongs to the field of medical apparatus, and relates to improvement of a general insulin special refill structure for a pen insulinsyringe.
本发明属医疗器械领域,涉及一种笔式胰岛素注射器常规胰岛素专用笔芯结构的改进。
2
When injection of an inner plunger of the refill of the pen insulinsyringe stops, the convex plunger is tallied with the top of a refill bottle and fills the whole space.