Abstract: An electrotherapeutic device includes a stimulation member and an anchor to retain the stimulation member at the treatment site of implantation. The stimulating member and the anchor have surfaces that are “keyed” to each other, such that when the stimulating member is inserted in the anchor, the stimulating member is resistant to moving relative to the anchor. The anchor also includes one or more retaining channels, which are configured to receive sutures therein that are used to secure the anchor to the treatment site of implantation, which prevent the anchor from moving or migrating relative to the treatment site.