1895 advertisement The<unk>  was a fake medical instrument patented and sold in the United States of America by Hercules Sanche, who also invented and sold other later fake instruments later termed as "electroquackery" such as the "Oxydonor" to remedy a range of ailments.
Electropoise
Prospero
Keyser's Pills
Veinoplus
Palinacousis
Moniz sign
Elscint
Portsmouth sign