Injection molding system and use of such system to produce a device for being positioned within the ear canal of a user

An injection molding system for the production of a device, the system comprising:

• an outer mold (100) comprising a plurality of parts (102, 104), which together form a first cavity (110), said parts (102, 104) preferably made of metal;
• and
• an inner mold (200) adapted for being positioned with said first cavity (110) and having walls forming a second cavity (210), said cavity (210) being defined by the shape of said device, said inner mold (200) preferably being made of a polymeric material;
• wherein the outer mold (100) comprises a first injection gate (120) leading into said first cavity (110), wherein the inner mold (200) comprises a second injection gate (220) leading into said second cavity (210), and wherein said first (120) and second (220) gates are aligned such that an injection molding material may be introduced into said second cavity (210) via said first (120) and second (220) gates.