Elementary Principles of Electro-therapeutics: For the Use of Physicians and Students |
Contents
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Common terms and phrases
acid action apparatus applied attached attraction base battery binding posts bladder body brain branches brush button carbon cause cauterizing charge circuit coil conducting cords conductor connected copper element cured Daniells cell deflection difference of potential direction disc disease effect elec electrified electro-motive force electrode electrolysis electroscope employed excited facial nerve FARADIC BATTERY faradic current fastened fluid form of electricity galvanic and faradic galvanic cells galvanic current galvano-cautery galvanometer ganglia glass heat inches increased induced current instrument insulated iron irritation length Leyden jar located machine magnet MCINTOSH metal method minutes Motor point muscles neck needle negative pole nerve nickel-plated number of cells operator pain paralysis patient placed plate platinum plexus polarity positive electrode positive pole primary current produced rectum removed resistance rheostat rheotome rubber secondary sensation shellac shock shown in Fig skin sponge stimulation strength surface switch tion tissues treatment tricity tumors uterus voltaic pile wire zinc
Popular passages
Page 28 - Spirits, at the same time, are to be fired by a spark sent from side to side through the river, without any other conductor than the water; an experiment which we some time since performed, to the amazement of many.
Page 163 - The galvano-cautery frequently cauterizes tissues very superficially, and consequently sometimes gives rise to hemorrhages. 2. The small mass of platinum that can be heated by the galvanic current, except by employing batteries out of proportion to the work to be accomplished, renders it unsuited to cases where voluminous tissues are to be destroyed. It is not impossible, however, to perform all amputations by it. Dr. Burns, of England, records twelve amputations, eight of the thigh, two of the leg,...
Page 141 - ... is drawn into the coil. One end of the solenoid coil is connected with the positive, and the other with the negative pole of the electric arc, and, being a coil of high resistance, its attractive force on the iron cylinder is proportional to the electro-motive force between the two electrodes, or, in other words, to the electrical resistance of the arc itself.
Page 28 - Chagrined a little that we have hitherto been able to produce nothing in this way of use to mankind, and the hot weather coming on, when electrical experiments are not so agreeable, it is proposed to put an end to them for this season somewhat humorously, in a party of pleasure on the banks of Skuylkill.
Page 41 - ... as magnetism and electricity. 3. That the inherent polarity or magnetism of each molecule is a constant quantity like gravity ; that it can neither be augmented nor destroyed. 4. That when we have external neutrality, or no apparent magnetism, the molecules or their polarities arrange themselves so as to satisfy their mutual attraction by the shortest path, and thus form a complete closed circuit of attraction. 5. That when...
Page 141 - ... and depressor nerves — under the influence of the galvanic current. One pole (usually the negative) is placed at the epigastrium, while the other is passed over the forehead and top of the head, by the inner borders of the sterno-cleido-mastoid muscles, from the mastoid fossa to the sternum, at the nape of the neck, and down the entire length of the spine.
Page 407 - He recommends the following method to be pursued : i, the ascending constant current applied to the cervical sympathetic, on each side, for at the most one minute ; 2, the same to the spinal cord (the anode at about the fifth dorsal spine, the cathode high up in the cervical region) ; 3, through the occiput (one pole at each mastoid process), and in certain cases also through the temples, a constant current, for at the longest one minute, and so weak that the patient can feel but the slightest sensation...
Page 9 - Insulators across which electric action takes place are called dielectrics. The glass of the Leyden jar across which electricity is propagated from the inner to the outer coating is a dielectric. Difference of Potential. When electricity moves or tends to move from one point to another, there is said to be a difference of potential between them. Diffusion of Current. The power of a galvanic current to extend its influence in all directions, that power never being limited to the two electrodes. Dip....
Page 306 - ... disease. Having isolated the growth by this means, fixed the mouth open by a gag, and had the tongue drawn forward as far as possible, either by means of tongue forceps or, what is far better, a whipcord ligature passed through the tip of the organ, the loop of the galvanic e'craseur is to be passed round the base of the disease behind the pins, and gradually tightened; the...
Page 349 - Weak currents at long intervals. 13. In most cases a current of six cells, or from two and a half to five milliamperes, will do the work ; but it must be regulated according to the work to be done. 14. The seance should be at intervals not too frequent in succession.