The international encyclopaedia of surgery; a systematic treatise on the theory and practice of surgery . Mays tourniquet for the treatment of aneurism. A. Pad of pressure. B. Pad of counter-pressure. C. Balland socket-joint in the pad of pressure, which is governed by the screw and nut D. E. Key by which, whenapplied on F, the pads can be approximated or separated. G. Fenestrie, by which the pads can be Strap and buckle. The action of Briddons instrument (Fig. 449), is made elastic by running the screwsthrough tense India-rubber bands; it can be tolerated for a long time without p
The international encyclopaedia of surgery; a systematic treatise on the theory and practice of surgery . Mays tourniquet for the treatment of aneurism. A. Pad of pressure. B. Pad of counter-pressure. C. Balland socket-joint in the pad of pressure, which is governed by the screw and nut D. E. Key by which, whenapplied on F, the pads can be approximated or separated. G. Fenestrie, by which the pads can be Strap and buckle. The action of Briddons instrument (Fig. 449), is made elastic by running the screwsthrough tense India-rubber bands; it can be tolerated for a long time without producingany annoying complication. Fig. Briddons artorv-ooninressor for the treatment of aneurism. Pressure can be made at two points, the distance between which may be variedaccording to circumstances, or the instrument may be taken apart, and then a single GANGRENE FROM ARTERIAL AND VENOUS OCCLUSION. 251 compressor may be used as a tourniquet. A smaller instrument can be made for theupper extremity; also a larger one for compressing the abdominal aorta. The hard rubber compressors are attached to the screws by ball and socket-joints,and they are fitted into concavo-convex caps of wood, protected by several layers o(buckskin, which are put on just before screwing down, and should be well pov/deredeach time that they are applied. Gangrene from Arterial and Venous Occlusion. When, from the injuries of bloodvessels, mortification ensues, it is becausethe supply of normal blood, that is, of blood which is fit to sustain calorifi-cation and the normal processes of cellular and molecular nutrition, is somuch impaired by the inju
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