PROBLEM TO BE SOLVED: To prevent a liquid object from being stuck to a gap between a male member and an outer casing of a male connector caused by performing an enteral nutrition.SOLUTION: An adaptor 1 includes a female connector 110 at one end, and a male connector 120 at the other end. The female connector 110 includes a tubular part 111 having a hollow cylindrical shape, and a spiral projection 115 formed on an outer peripheral surface of the tubular part 111. The male connector 120 includes a cylindrical male member 121, an outer casing 123 provided to enclose the male member 121, and a female thread 125 provided on an inner peripheral surface of the outer casing. The tubular part 111 and the male member 121 are communicated to each other.SELECTED DRAWING: Figure 2【課題】経腸栄養法を行うことによってオスコネクタのオス部材と外筒との間の隙間に液状物が付着するのを防止する。【解決手段】アダプタ１は、一端にメスコネクタ１１０を備え、他端にオスコネクタ１２０を備える。メスコネクタ１１０は、中空円筒形状を有する管状部１１と、管状部１１１の外周面に設けられた螺状突起１１５とを備える。オスコネクタ１２０は、筒状のオス部材１２１と、オス部材１２１を取り囲むように設けられた外筒１２３と、外筒の内周面に設けられた雌ネジ１２５とを備える。管状部１１１とオス部材１２１とは連通されている。【選択図】図２
