A curved surgical fastener for locking a medical device to tissue includes a curved member having a proximal end and a distal end. The distal end of the bending member has a tissue penetrating end that includes an insertion tip with a distal tip. The bending member has a total curvature of less than 360 degrees between the proximal and distal ends of the bending member. The bending member includes a compound curve. The proximal portion of the curved member has a first radius of curvature and the distal portion of the curved member has a second radius of curvature that is different from the first radius of curvature.医療用装置を組織に係止するための湾曲した外科用締結具は、近位端と遠位端とを有する湾曲部材を含む。湾曲部材の遠位端は、遠位尖端部を備えた挿入先端部を含む組織貫入端部を有している。湾曲部材は、湾曲部材の近位端と遠位端との間に360度未満の全曲率を有する。湾曲部材は複合曲線を含む。湾曲部材の近位部分は第1の曲率半径を有し、湾曲部材の遠位部分は、第1の曲率半径と異なる第2の曲率半径を有する。