Peripheral nerve stimulation frequently referred to as PNS, is a commonly used approach to treat chronic pain. It involves a minimally-invasive intervention that places a small electrical device next to one of the peripheral nerves. The electrode delivers rapid electrical pulses that are felt like mild tingle. The device that approved by Health Canada does not have a battery. The energy is transmitted from a removable patch (like a BandAid) through skin to the electrode. The patient is able to control stimulation by turning the device on and off and adjusting stimulation parameters as needed.