The principles and practice of obstetrics . years since constructed an instrument, known as the embry-otomy forceps or cephalotribe. It has, since its first introductionto the attention of the profession, undergone several modificationsby different accoucheurs, among whommay be named Cazeaux (Fig. 98), andScanzoni. The cephalotribe of the latteris a good instrument, and will be foundto answer very efficiently all the pur-poses for which it is intended. It is anerror, however, to suppose that the ce-phalotribe can do away with the perfora-tor; on the contrary, the true excellenceof the instrume
The principles and practice of obstetrics . years since constructed an instrument, known as the embry-otomy forceps or cephalotribe. It has, since its first introductionto the attention of the profession, undergone several modificationsby different accoucheurs, among whommay be named Cazeaux (Fig. 98), andScanzoni. The cephalotribe of the latteris a good instrument, and will be foundto answer very efficiently all the pur-poses for which it is intended. It is anerror, however, to suppose that the ce-phalotribe can do away with the perfora-tor; on the contrary, the true excellenceof the instrument is developed only afterthe cranium has been previously emptiedof the cerebral mass. It has been demonstrated by nume-rous experiments made on dead fetus-es by Ilershent, that, if the instrumentbe applied to the head previous to theevacuation of its contents by the perfo-rator, the diameter in accordance withwhich it is grasped will be diminished, while the other dimensionsof the head become increased. If, on the other hand, the cranium. Fig. 98. C(U THE PRINCIPLES AND PRACTICE OF OBSTETRICS. be perforated and freed of the brain, and then crushed by meansof the cephalotribe (Fig. 99), it is less voluminous, and the diame-ters much more contracted.* But the advantages of the instrument are not limited to thehead of the child; it may be employed with benefit, if the foetusbe dead, in difficult breech presentations ; also, for the purpose ofdiminishing the volume of the thorax, should it be necessary after
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Keywords: ., bookcentury1800, bookdecade1860, bookpubli, booksubjectobstetrics
