Device and method for tissue ligation

A medical device (100) for tissue ligation comprises a band (110) having perforations (122) and rungs (120) defined therein. A locking case (130) is connected to the band (110) and has a channel (150) dimensioned for reception of the band (110). A locking member (140) of the locking case (130) is configured to interlock perforations (122) and rungs (120) defined in the band (110). The channel (150) comprises an arching portion (152) into which the band (110) at least partly protrudes by arching over the locking member (140) when the locking member (140) engages a rung (120) of the band (110).