Connector, syringe assembly, and connector for mixing

A mixing connector connectable to a medicine container, which contains medicine and which is positioned in a first port of a holder, and a liquid container, which contains liquid different from the medicine and which is positioned in a second port of the holder possessing a configuration different from a configuration of the first port, the mixing connector comprising:

• a support section;
• a double-pointed needle supported in the support section and extending over a longitudinal extent, the double-pointed needle including a first portion projecting away from the support section in a first projecting direction and terminating at a first sharpened end for puncturing a stopper in the medicine container, the double-pointed needle including a second portion projecting away from the support section in a second projecting direction and terminating at a second sharpened end for puncturing a stopper in the liquid container, the double-pointed needle possessing a lumen extending throughout the longitudinal extent of the double-pointed needle and opening to both the first sharpened end and the second sharpened end of the double-pointed needle;
• a first tube-shaped section fixed to the support section and projecting away from the support section in the first projecting direction, the first tube-shaped section possessing an inner peripheral surface and the first portion of the double-pointed needle possessing an outer peripheral surface, the first tube-shaped section surrounding the first portion of the double-pointed needle so that a space exists between the outer peripheral surface of the first portion of the double-pointed needle and the inner peripheral surface of the first tube-shaped section;
• a second tube-shaped section fixed to the support section and projecting away from the support section in the second projecting direction, the second tube-shaped section possessing an inner peripheral surface and the second portion of the double-pointed needle possessing an outer peripheral surface, the second tube-shaped section surrounding the second portion of the double-pointed needle so that a space exists between the outer peripheral surface of the second portion of the double-pointed needle and the inner peripheral surface of the second tube-shaped section;
• the first tube-shaped section and the second tube-shaped section each possessing an outer periphery, the outer periphery of the first tube-shaped section and the second tube-shaped section being differently shaped;
• the shape of the outer periphery of the first tube-shaped section permitting the first tube-shaped section to be positioned in the first port of the holder and preventing the first tube-shaped section from being positioned in the second port of the holder;
• and
• the shape of the outer periphery of the second tube-shaped section permitting the second tube-shaped section to be positioned in the second port of the holder and preventing the second tube-shaped section from being positioned in the first port of the holder.