column 15 is inserted into a hole on the lower mold 3 and which is movable fitted and dynamic sealed with mold column 15 so as to form a syringe cavity 16 having variable capacity and communicating with the capsular sheath 11 through liquid pore passages 13 on the mold core 12 the flexible male mold and mold column 15 are coaxial to the female mold 10 for a purpose of simplicity in this embodiment the horizontal sections of the female mold 10 capsular sheath 11 and mold column 15 are in circular shape and the diameter of the lower segment of the mold column 15 is larger than the diameter of the upper segment of the mold column 15 slightly so as to balance fee pretension force of the spring 17 the syringe cavity 16 is filled with liquid 14 in initial state the mold column 15 is supported at a position allowing a maximum capacity of the syringe cavity 16 by the spring 17 and the liquid 14 is fully drawn into the syringe cavity 16 in the initial state the mold column 15 is supported at an upper limit position by the pretension force of the spring.