Method for overmolding a tubular structure

A method for overmolding a tubular structure comprising:

• inserting a core pin into the tubular structure so that at least a portion of a main body of the core pin extends at least partially out of the tubular structure, wherein the core pin comprises the main body and a flexible portion connected to the main body and the flexible portion extends out of the tubular structure;
• clamping the tubular structure having the core pin inserted to a mold cavity structure in an Z-direction and/or a containment direction using a retaining structure, wherein the retaining structure comprises an inclined portion and the flexible portion extends out of the mold cavity structure;
• and
• injecting a thermoplastic material into a mold cavity of the mold cavity structure to overmold at least a portion of the clamped tubular structure, wherein the injecting of the thermoplastic material includes the thermoplastic material contacting the portion of the core pin extended from the tubular structure.