Manual of intragastric technique : practical lessons in the use of apparatus for the diagnosis and treatment of diseases of the stomach / by George Herschell.

  • Herschell, George, 1856-1914.
Date:
1903
Catalogue details

Licence: Public Domain Mark

Credit: Manual of intragastric technique : practical lessons in the use of apparatus for the diagnosis and treatment of diseases of the stomach / by George Herschell. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    certain modifications in their construction which, fit them more particularly for medical use. As far as we know at present the triphase alternating current appears to be par excellence the current to use for the purpose of restoring tone to the muscular substance of the gastro-intestinal tract, and has the great advantage that it is not necessary in most cases to introduce electrodes into the stomach. When applied percutaneously the triphase alternating current produces manifest contractions in the stomach and intestines, and considerably shortens the time that food remains in the stomach. It is a task of great difficulty to describe a triphase current in a few words and in terms which shall be intelligible to any but electricians in the space at my disposal in this work; I shall therefore not attempt to do so, but refer the reader to my little book on Polyphase Currents already men- tioned, which deals sufficiently fully with the purely technical and electrical part of the subject. Fig. 41 shows a triphase generator which was especially designed for medical work by the author, with the able assistance of Mr. A. E. Dean, the manufacturer. The generator proper is shown above, and below it a triple transformer by which the current from each phase can be regulated simultaneously and to the same extent. The secondary coils, which travel over the primary ones, are connected together and moved en masse by means of a long screw actuated by a handle seen at the right hand of the cut. A special feature of the apparatus is a triple plug connection instead of binding screws on the base board of the trans- former. This little point adds much to the facility