The fixing device 1 includes a longitudinal vaginal insertion portion 2 inserted into the vagina, a urethral insertion member 3 having a longitudinal urethral insertion portion 31 inserted into the urethra, a vaginal insertion portion 2 and a urethral insertion member 3. And a connecting portion 4 which is a connecting means for connecting the two. The vaginal insertion part 2 has a plate shape and is curved. Further, the vaginal insertion portion 2 serves as a guide portion that supports the medical device movably along the longitudinal direction so as to guide the longitudinal medical device in the vicinity of the urethra and avoiding the urethra. It has two guide holes 21a and 21b that penetrate the insertion portion 2 in its thickness direction.固定器具１は、膣内に挿入される長手形状の膣挿入部２と、尿道内に挿入される長手形状の尿道挿入部３１を有する尿道挿入部材３と、膣挿入部２と尿道挿入部材３とを連結する連結手段である連結部４とを備えている。膣挿入部２は、板状をなし、湾曲している。また、膣挿入部２は、長手形状の医療器具を尿道の近傍でかつその尿道を避ける方向に案内するように、前記医療器具をその長手方向に沿って移動可能に支持する案内部として、膣挿入部２をその厚さ方向に貫通する２つの案内孔２１ａ、２１ｂを有している。
