Electromyography generator with anal applicable plug electrode - has insulators with earth electrode coupled by line to connecting part

摘要

The generator in the form of an anal plug electrode with a restriction, surrounded in use by the anal closure muscles. On a central insulating part in the restriction region are connected two electrodes, generating a differential signal, in mutually insulated relationship. They include a conductive line to a recording appts. plug connector. To the line are coupled insulating members (6,7). At least one insulating member carries an earthing electrode (8,9), coupled by a line to the plug connector terminal. If two earthing electrodes are used, they are interconnected and form two ends of the generator. A cavity for a preamplifier (10) may be provided in the earthing electrode, protruding outwards during application. Alternately, an impedance converter is retained in this cavity. The generator may have a central longitudinal box for a second generator.