J.Jpn. Surg. Soc.. 58(12): 1920-1927, 1958

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ACTION CURRENT BY THE MOVEMENT OF THE INTESTINAL SMOOTH MUSCLES IN THE BOWEL PART Ⅰ. THE METHOD OF CLINICAL INDUCTION

The author has successfully recorded the action current of the colon and rectum without any operative procedure and this method will be applicable to clinical use in practice.
The 260~300 μ coper or platinum insulated wire is attached on the rubber balloon which is connected with the rubber tube, and the tip of the wire should be made fresh in every use ; this electrode is inserted into the rectum or sigma. When the balloon is filled up with air or water (from the rubber tube), the electrode is attached to the intestinal wall from inside, and the other end of the wire is connected to the E.E.G. amplifier (8 channel, pen-writing).
The best conditions recorded by this method are as follows, the resistance between these two electrode tips is 50KΩ by the monopollar method or 100KΩ by the bipollar.Time constant is 0.05 sec. The wire is 260~300 μ thick.
The pen-writing recoding appartus is better than any other one, because it is necessary to record the action current of the smooth muscles for a very long time.
This method is better than the kimograph of the intestine, because this method is never affected by the abdominal pressure or the movement of an adjacent intestine.
(author's abstract)

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