Oral muscle training instrument and oral muscle training method

An oral muscle training device comprising:

• a pair of electrodes disposed on a tongue surface in an oral cavity, at least one electrode being disposed on a midline of the tongue surface;
• an electrode branched from one electrode of the pair of electrodes and disposed on a skin surface;
• and
• an electric circuit configured to pass a medium frequency current between the electrodes.

An oral muscle training device comprising:

• a first pair of electrodes disposed on a tongue surface in an oral cavity, at least one electrode being disposed on a midline of the tongue surface;
• a first surface electrode branched from one electrode of the first pair of electrodes and disposed on a skin surface;
• an electric circuit configured to pass a first medium frequency current between electrodes formed of the first pair of electrodes and the first surface electrode;
• a second pair of electrodes disposed on a tongue surface in the oral cavity, at least one electrode being disposed on a midline of the tongue surface;
• a second surface electrode branched from one electrode of the second pair of electrodes and disposed on the skin surface;
• and
• an electric circuit configured to pass a second medium frequency current between electrodes formed of the second pair of electrodes and the second surface electrode.

An oral muscle training method comprising:

• disposing a pair of electrodes on a tongue surface in an oral cavity, and disposing at least one of the pair of electrodes on the midline of the tongue surface;
• disposing an electrode branched from one electrode of the pair of electrodes under a chin, on a skin surface of a front surface of a neck, or on a skin surface of an entire circumference surface of a neck;
• and
• passing a medium frequency current between the electrodes.