Fixing device for esophageal lead electrode

The invention relates to a fixing device for an esophageal lead electrode. A sleeve body is of an annular structure. A first connection piece, a second connection piece, a third connection piece and a fourth connection piece are annular and are uniformly distributed below the sleeve body and provided with threads corresponding to one another. Fastening nuts are arranged outside the first connection piece, the second connection piece, the third connection piece and the fourth connection piece in a sleeved mode. The widths of the upper portion of the first connection piece, the upper portion of the second connection piece, the upper portion of the third connection piece and the upper portion of the fourth connection piece are not smaller than the widths of the lower portion of the first connection piece, the lower portion of the second connection piece, the lower portion of the third connection piece and the lower portion of the fourth connection piece. The fastening nuts are arranged outside the first connection piece, the second connection piece, the third connection piece and the fourth connection piece from bottom to top in a sleeved mode. The fixing device is simple in structure, low in cost, suitable for mass production and good in social benefit and economic benefit.