In methods and devices for treating a body canal or cavity, an internal applicator has an insertable part or section for insertion into the body canal or cavity (e.g. vagina or anal canal) and non-insertable part which may be detachable from a handle or second part of the device. The insertable part may include a plurality of energy delivery elements, optionally spaced apart in an array. During treatment the insertable part is positioned into or onto the body canal or cavity. The treatment may then proceed without additional movement of the insertable part. The energy delivery elements may be activated in predetermined order.