The principles and practice of obstetrics . l rule, be seized inthe direction of its occipito-mental diameter, for in thisway the greatest possiblefacility will be afforded forits safe extraction. It is agrave error to suppose thatthe blades should invariablybe applied on the sides ofthe pelvis; it is tin; posi-tion of the head, as willhereafter be shown, icliichis to decide the position ofthe blades. 13. When one branchhas been properly intro-duced, it is to be intrustedto an aid, who takes it bythe handle (Fig. 90), andholds it steadily, for theslightest movement willoftentimes embarrass the
The principles and practice of obstetrics . l rule, be seized inthe direction of its occipito-mental diameter, for in thisway the greatest possiblefacility will be afforded forits safe extraction. It is agrave error to suppose thatthe blades should invariablybe applied on the sides ofthe pelvis; it is tin; posi-tion of the head, as willhereafter be shown, icliichis to decide the position ofthe blades. 13. When one branchhas been properly intro-duced, it is to be intrustedto an aid, who takes it bythe handle (Fig. 90), andholds it steadily, for theslightest movement willoftentimes embarrass theoperator. The other branch is then introduced upon preciselythe same general basis (Fig. 90); when it has embraced the head,the accoucheur then takes the handle of the branch which has beenintrusted to the assistant, and by judicious manipulation will be * Let the student accustom himself, by frequent trials on the manikin, to seize theinstrument in the manner described, and lie will. I am sure, greatfollowing the rule at the bedside. Fig. 90. THE PRINCIPLES AND PRACTICE OF OBSTETRICS. 589 enabled to bring the two handles in juxtaposition, which constituteswhat is known as locking the forceps, a very essential, and, m myopinion, the most important part of the entire operation; for if theinstrument lock, the proof is positive that it has been correctly applied. 14. After the instrument is locked(Fig. 91), many accoucheurs recommendthai the handles should be kept closelyin union, and, for this purpose, they re-sorl to a napkin for the purpose of bind-ing them together. This, as a generalrule, is had practice, and should be hadrecourse to only in case of diminishedpelvic capacity, when it becomes im-portanl to lessen the volume of the headby more or less powerful pressure. 15. The force employed for the purpose of delivering the childshould be compound, consisting of two thirds lateral and one thirdextractive; and with this object, the right hand should, with its
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Keywords: ., bookcentury1800, bookdecade1860, bookpubli, booksubjectobstetrics
