Several technical features are associated to the new torch design such as an automatic electrode change, a double flow gas nozzle and a push pull wire feeder.

The utility model relates to a bipolar electrocoagulator which belongs to a medical apparatus. A double tube push-pull principal oscillation circuit is composed of a transistor.

Double fixed distance laser heads, two -way moveable double laser heads, Automatic feeder, Infra-red positioning system, Push-Pull changing work table.