A stimulation media fixation unit for electrical and/or mechanical stimulation of nerves of a living being, comprising: a stimulation media fixation unit body configured to be arranged in a formed channel in and out of the skin of the living being; at least one electrode (3,4,5) and/or at least one vibration generator configured to be placed in close proximity of a portion of a nerve of the living being; and connection/s (11, 12) for connection o a pulse generator configured to provide a sequence of electrical pulses, and/or mechanical vibrations, to the at least one electrode, or the at least one vibration generator, in order to achieve stimulation of the nerve, where the stimulation media fixation unit body has a first end and a second end, where the first end is configured to protrude out of a first end of the formed channel and the second end is configured to protrude out of a second end of the formed channel, wherein the stimulation media fixation unit further comprises at least one end termination (1,10) configured to be dismantled from and reassembled to the stimulation media fixation unit body, and to provide a stop for movement of the stimulation media fixation unit body in at least one direction within the formed channel, where the at least one end termination is configured to be positioned outside the first and/or second end of the formed channel, and for providing a mechanically interlocking mechanism by means of geometry of the end termination, wherein the stimulation media fixation unit further comprises at least one expanding member or adjustable deflectable electrode member adapted for providing tissue fixation through mechanically anchoring in the formed channel by means of expansion from an initial shape into an intended shape. a stimulation media fixation unit body configured to be arranged in a formed channel in and out of the skin of the living being; at least one electrode (3,4,5) and/or at least one vibration generator configured to be placed in close proximity of a portion of a nerve of the living being; and connection/s (11, 12) for connection o a pulse generator configured to provide a sequence of electrical pulses, and/or mechanical vibrations, to the at least one electrode, or the at least one vibration generator, in order to achieve stimulation of the nerve, where the stimulation media fixation unit body has a first end and a second end, where the first end is configured to protrude out of a first end of the formed channel and the second end is configured to protrude out of a second end of the formed channel, wherein the stimulation media fixation unit further comprises at least one end termination (1,10) configured to be dismantled from and reassembled to the stimulation media fixation unit body, and to provide a stop for movement of the stimulation media fixation unit body in at least one direction within the formed channel, where the at least one end termination is configured to be positioned outside the first and/or second end of the formed channel, and for providing a mechanically interlocking mechanism by means of geometry of the end termination, wherein the stimulation media fixation unit further comprises at least one expanding member or adjustable deflectable electrode member adapted for providing tissue fixation through mechanically anchoring in the formed channel by means of expansion from an initial shape into an intended shape.