PROBLEM TO BE SOLVED: To provide a medical valve having a novel structure, which can more reliably support an outer peripheral portion of an elastic valve body with respect to a housing and prevent a problem of the elastic valve body falling out inward. .. SOLUTION: In a medical valve 10, an annular groove 76, 74 is formed in an elastic valve body 16, and a tubular support portion 70 is provided on the outer peripheral side of an annular connecting portion 72 located between them. It is formed. The inner and outer holding portions 20 and 18 are engaged with the annular grooves 76 and 74 provided on the inner and outer surfaces of the valve of the annular connecting portion 72. The opening member 12 is provided with an outer holding portion 18 and an inner holding portion 20, and an axially inwardly protruding portion 82 of the tubular support portion 70 is provided between the inner holding portion 20 and the outer holding portion 18. It is sandwiched and supported. [Selection diagram] Fig. 6【課題】弾性弁体の外周部分をハウジングに対してより確実に支持させることができて、弾性弁体の内方への抜け落ちの不具合が防止される、新規な構造の医療用弁を提供する。【解決手段】医療用弁１０であって、弾性弁体１６には環状溝７６，７４が形成されていると共に、それらの間に位置する環状連結部７２の外周側に筒状支持部７０が形成されている。環状連結部７２の弁内外面に設けられた環状溝７６，７４には、内外の保持部２０，１８が係合されている。開口部材１２には外側保持部１８と内側保持部２０とが設けられており、筒状支持部７０における軸方向内方への突出部分８２が内側保持部２０と外側保持部１８との間で挟まれて支持されている。【選択図】図６
