PROBLEM TO BE SOLVED: To provide an assistance instrument for an ejaculation promotion device, the instrument for stimulating a scrotum, and an ejaculation promotion device enabling stimulation to both a penis and the scrotum and to solve a problem due to "boredom" by means of the incorporation mode of the ejaculation promotion device.SOLUTION: An assistance instrument for an ejaculation promotion device, the instrument for use in joining to the ejaculation promotion device that has a cylindrical container of which at least one end in a longitudinal direction is open, the instrument includes: a contact stimulation part a joining part to be joined to the container and a retention part for joining together the contact stimulation part and joining part. The container is dividable into small cylinders, and the small cylinders have insides with different forms or materials.COPYRIGHT: (C)2014,JPO&INPIT【課題】陰嚢を刺激する射精促進装置用補助具を提供し、陰茎と陰嚢とを合わせて刺激するような射精促進装置を提供すること。また、射精促進装置の実装形態によって「飽き」に基づく問題を解決すること。【解決手段】長手方向の少なくとも1端面が開口した筒状の容器を有する射精促進装置に接合させるための、接触刺激部と容器に接合される接合部と接触刺激部及び接合部を結合する保持部とを有する射精促進装置用補助具を提供する。容器を小筒に分割可能なものとし、小筒の内部の形状又は材質に変化を持たせる。【選択図】図1
