. Medical electricity; a practical treatise on the applications of electricity to medicine and surgery. stem of the handle communicates withthe second terminal.) The mirror is held by a sliding ringin clamping jaws formed by splitting the outer end of thehandle extension. This method of organization permitsthe use of different sizes of mirrors. The handle properis of hard wood, and is provided with a spring, G, whichmakes and breaks the circuit. In use the handle is heldbetween the thumb and forefinger, the spring being pressedby the second finger to complete the circuit. The hard-rubber specu
. Medical electricity; a practical treatise on the applications of electricity to medicine and surgery. stem of the handle communicates withthe second terminal.) The mirror is held by a sliding ringin clamping jaws formed by splitting the outer end of thehandle extension. This method of organization permitsthe use of different sizes of mirrors. The handle properis of hard wood, and is provided with a spring, G, whichmakes and breaks the circuit. In use the handle is heldbetween the thumb and forefinger, the spring being pressedby the second finger to complete the circuit. The hard-rubber speculum is placed in a non-conductingframe carrying the lamp and the conductors, and a handleis provided so that after the otoscope is adjusted the pa-tient may hold it in position, leaving both of the operatorshands free for the use of instruments and the applicationof medicaments. The conducting cords are coupled to MEDICAL ELECTRIC HEATING AND LIGHTING. 291 the posts and the small end of the speculum inserted inthe ear. The electric otoscope can also be used as an illuminatorfor the nares. Fig. Electric otoscope of the S. S. White Company. The electric lantern will be found very useful to. thesurgeon when a strong light is desirable for the examina-tion of the throat. The light is supplied by an Edisonfive-candle lamp, run by the six-cell carbon cell battery. The most troublesome part of any electrical illuminatoris the battery for actuating it. Any of these may be 292 ELECTRICITY IN SURGERY. worked by the battery shown in Fig. 92, which consists ofzinc-carbon cells contained in a box and having a mechani-cal appliance—lever—for raising and lowering the ele- F10. IC4.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectro, bookyear1887
