The Development History of Neck Vagus Nerve Stimulator

Although CES therapy devices were first introduced as treatment equipment in 1981, the history of CES therapy itself is much longer. Doctors used electric rays to relieve pain at least 2000 years ago. Claudius Galen (131-201 BC) even suggested using the shocks generated by electric fish as a treatment method.

 

Initially, doctors and researchers often placed electrodes on the eyes, believing that current could not pass through the skull. Later, researchers discovered that placing electrodes on the earlobes was more convenient and quite effective.

 

In the 1960s, animal experiments with CES began in the United States at the University of Tennessee (now the Medical University of Wisconsin). Human clinical trials soon followed at the University of Texas Medical School in San Antonio, and more experiments began.