. Practical electricity in medicine and surgery. Fig. 109.—Combined Battery and Hydrostatic Apparatus. Water being thus caused to flow, passes around the rheostat andthrough the tube, 7i, by flexible-rubber tubes into the instrument,around the heated wire, back through the tube h at m, where itdrops back into the reservoir at tr, and can be used over andover again. With proper adjustment the weight need not beraised oftener than once in twenty minutes, but the water must 212 PRACTICAL ELECTRICITY IN MEDICINE AND SURGERY. be kept steadily flowing, or there is danger to the p is a
. Practical electricity in medicine and surgery. Fig. 109.—Combined Battery and Hydrostatic Apparatus. Water being thus caused to flow, passes around the rheostat andthrough the tube, 7i, by flexible-rubber tubes into the instrument,around the heated wire, back through the tube h at m, where itdrops back into the reservoir at tr, and can be used over andover again. With proper adjustment the weight need not beraised oftener than once in twenty minutes, but the water must 212 PRACTICAL ELECTRICITY IN MEDICINE AND SURGERY. be kept steadily flowing, or there is danger to the p is a metal loop in which the tubes and wires may rest sothat their weight is hardly noticed. At / / are handles by winchthe whole instrument can be moved about as desired.*. Fig. 170.—The Urethroscope. arrangement. The urethroscope is shown in detail in Fig. 170, and inposition in Fig. 171. Tho outer tube or cannula, m, is aboutthe size of a catheter No. 21 F. Into this is pushed the rect-angular tube, b b, containing the illuminating and coolingThe loop of platinum wire, c, is seen at thelower beveled end of tins part of the appa-ratus. In one of the water tubes is aninsulated wire, the other conductor being fur-nished by the main body of the metal cold water passes into the tube at li, andafter flowing through the entire length ofthe apparatus, but without coming in contactwith the heated wire, passes out at i. Thefunnel-shaped extremity, Je, is the eye-piece. In Fig. 171 the instrument is shown in position. With it a surface of one centimetre square can be illuminated at one time. It will be readily seen how useful this apparatus may be made in the diagnosis of diseased conditions of the urethral mucous membrane. * Annals of Anatomy and Surg
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectelectri, bookyear1890
