Modern medicine : its theory and practice, in original contributions by American and foreign authors . fication of Unverrichts method. Fiirbringer^ secures negative 1 Deut. vied. Woch., 1893, Nr. 10, S. 241. 2 Berl. klin. Woch., 1888, Nr. 13. S 254. 826 DISEASES OF THE RESPIRATORY TRACT pressure in the bottle by aspiration with the mouth, which can hardly berecommended. In Dieulafoys rack aspirator^ the evacuated fluid flowsdirectly into the vacuum apparatus. Stinzing^ recommends a tall, gradu-ated flask for the reception of the fluid. In both Stinzings and Frankels^articles a full description
Modern medicine : its theory and practice, in original contributions by American and foreign authors . fication of Unverrichts method. Fiirbringer^ secures negative 1 Deut. vied. Woch., 1893, Nr. 10, S. 241. 2 Berl. klin. Woch., 1888, Nr. 13. S 254. 826 DISEASES OF THE RESPIRATORY TRACT pressure in the bottle by aspiration with the mouth, which can hardly berecommended. In Dieulafoys rack aspirator^ the evacuated fluid flowsdirectly into the vacuum apparatus. Stinzing^ recommends a tall, gradu-ated flask for the reception of the fluid. In both Stinzings and Frankels^articles a full description and discussion of various instruments will be apparatus is in most general use. The pump is capable of adangerous degree of aspiratory force. Only sufficient aspiration should beused to just maintain the flow. The rubber tubing should be thick and allconnections must be air-tight. A piece of glass tubing inserted between thetrocar and bottle will be of assistance in noting the result of aspiration. Ifdesired, a mercury manometer may readily be connected with the bottle, thus Fig. 38. Aspiration with Potains apparatus. (After Hoppe-Seyler.) measuring the negative force. An extension of the inlet to the bottom ofthe bottle will prevent any back flow of air, provided the negative pressurewithin the thorax becomes greater than within the bottle. As a receptaclefor the fluid a bottle of the proper size to fit the rubber stopper, graduatedat different levels by marks of a file and capable of holding from 1500 to2000 cc, should be chosen. The glass should be of such a quality as tostand sterilization without breaking. Technique.—The instruments should be sterilized just before use. Thetrocars, all rubber tubing, rubber stopper to the bottle, scissors, and hypo- ^ A Treatise on Pneumatic Aspiration, London, 1873.^ Handhuch der Therapie innerer Kra,nkheiten, 1902, Band iii.^ Handhuch der physikalischen Therapie, Theil ii, Band i, Goldscheider und Jacob,1902. PLEURITIS 8
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