Methods and molds for manufacturing an ampule

Details Methods and molds for manufacturing an ampule Methods and molds for manufacturing an ampule

B - Operations, Transporting

29

C

B29C 45/14 (2006.01) A61M 5/30 (2006.01) B29C 33/30 (2006.01) B29C 39/10 (2006.01) B29C 39/14 (2006.01) B29C 45/26 (2006.01) B29C 45/36 (2006.01) B29C 70/76 (2006.01) A61M 5/31 (2006.01)

Patent

CA 2135075

2135075 9323225 PCTABS00028 A method and mold for making an ampule (60) for a needleless or jet injector device. The tip (48) of a core pin (40) is guided into a clearance hole (28) sufficiently large to prevent the tip from hitting the mold cavity (22). Plastic is injected into the mold (20) and flows into the space between the core pin tip (48) and the clearance hole (28) forming a vestigial nozzle pilot cylinder (70) around and over the ampule nozzle (68). The ampule (60) is removed from the mold (20) and the vestigial nozzle pilot cylinder (70) is removed to form a finished ampule. A core pin tip is made of drawn wire or is separately replaceable on the core pin. A nozzle of an ampule is cast in place. An ampule is molded with an enlarged nozzle and a separate orifice is installed in the ampule to provide the desired nozzle opening.

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