Cyclopædia of obstetrics and gynecology . ill alterfrom k to k\ and the head, as it descends, will do so in the axis of thel)elvis, and will not press against the anterior pelvic wall. Morales has also devised two forceps, which, although progressive mod-ifications, are open to serious objections. Finally, Tarnier, from 187? to 1879, invented over thirty forceps, of THE FOECEPS. iO which we will describe here only the first and the last model. (Figs. 75and 76.) The following are the peculiarities of the first model, that of is composed of two handles, and of two traction rods. (Fig. 75
Cyclopædia of obstetrics and gynecology . ill alterfrom k to k\ and the head, as it descends, will do so in the axis of thel)elvis, and will not press against the anterior pelvic wall. Morales has also devised two forceps, which, although progressive mod-ifications, are open to serious objections. Finally, Tarnier, from 187? to 1879, invented over thirty forceps, of THE FOECEPS. iO which we will describe here only the first and the last model. (Figs. 75and 76.) The following are the peculiarities of the first model, that of is composed of two handles, and of two traction rods. (Fig. 75.)The rods are inserted into a transverse bar a,tp, and are parallel as in theforceps of Thenance. The fenestrse are not as long as in the classic for-ceps; the instrument has a perineal curve, that of Morales modified; thetraction rods and the handles are united by a freely movable apply this forceps: Articulate each traction rod to its correspondingblade, and this is easily done. Holding both in the hand the fenestra is. Fig. 75.—TARNiERf5 FIRST Forceps. applied to the head in the usual fashion. When both blades have beenintroduced, the forceps is locked with the traction rods below. Com-pression is applied to the head by means of a screw, working from onehandle to the other. The traction rods are inserted into the transversetraction bar at^j. During traction on this bar, the handles act as an in-dex of the direction in which traction should be made, and the operatorhas only to follow the oscillations of these handles, keeping the tractionrods about one-half an inch apart from the handles. (Aubenas.) According to Tarnier, the above instrument is preferable to the ordi-nary: 1. Traction need not be so energetic. The whole of the tractionforce is utilized. If the head resists with a force of 37 pounds, thenonly 17 pounds traction force need be exerted by the instrument, while 7() A TREATISE OX OBSTKTKIC8. with the ordinary forceps greater force would bo requi
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Keywords: ., bo, bookcentury1800, booksubjectgynecology, booksubjectobstetrics
