Devices, systems and methods for treating pain with electrical stimulation

A non-invasive electrical stimulation device configured to transmit electrical stimulation through a patient's skin to a nerve beneath the skin, comprising:

• a housing having an exterior surface;
• a controller having a signal generator disposed within the housing, wherein the signal generator has a first signal line and a second signal line;
• a conductive surface coupled to the exterior surface of the housing and being in electrical communication with the first signal line of the signal generator;
• and
• a repositionable electrode disposed with respect to the housing, wherein the electrode is electrically discontinuous from the second signal line when in a first position and wherein the electrode is in electrical communication with the second signal line when in a second position.

A non-invasive electrical stimulation device configured to transmit electrical stimulation through a patient's skin to a nerve beneath the skin, comprising:

• a housing;
• a chamber within the housing configured for holding a gel;
• a controller having a signal generator disposed within the housing, wherein the signal generator has a first signal line and a second signal line;
• a return electrode in electrical communication with the first signal line of the signal generator;
• and
• a repositionable rollerball electrode disposed with respect to the housing and in fluid communication with the chamber, wherein the electrode is electrically discontinuous from the controller when in a first position and the electrode is in electrical communication with the second signal line when in a second position.

A non-invasive electrical stimulation device configured to transmit electrical stimulation through a patient's skin to a nerve beneath the skin, comprising:

• a housing having an exterior surface;
• a chamber within the housing configured for holding a gel;
• a controller having a signal generator disposed within the housing, wherein the signal generator has a first signal line and a second signal line;
• a conductive surface coupled to the exterior surface of the housing and being in electrical communication with the first signal line of the signal generator;
• and
• a rollerball electrode disposed with respect to the housing and in fluid communication with the chamber.