A device according to some embodiments may include an implant unit which may include a flexible carrier, an antenna arranged on the flexible carrier, at least one pair of modulation electrodes on the flexible carrier, at least one implantable circuit electrically connected to the at least one pair of modulation electrodes and the antenna; and at least one pair of suture holes passing through the flexible carrier. The at least one pair of suture holes may be arranged on the flexible carrier such that the flexible carrier may be configured to conform to tissue in a subject's body, and such that each suture hole of the at least one pair of suture holes may be positioned to allow suturing to tissue adjacent to the suture holes.