Cyclopædia of obstetrics and gynecology . THE FORCEPS. 69 6. The time requisite for tlie introduction of these instruments mustadd to the maternal suffering. 7. Facts have proved that not only are mechanical tractions dangerousfor the mother, but that further the very foetal lesions which they aim toprevent are more frequent than after the use of the ordinary forceps. Although the modifications of Pros and of Poullet have negatived cer-tain of the above objections, the others are still valid, and we are in per-. FiG. 68.—Insertion of Blade with Loop for Continuous Traction. (After Tamier.) fee
Cyclopædia of obstetrics and gynecology . THE FORCEPS. 69 6. The time requisite for tlie introduction of these instruments mustadd to the maternal suffering. 7. Facts have proved that not only are mechanical tractions dangerousfor the mother, but that further the very foetal lesions which they aim toprevent are more frequent than after the use of the ordinary forceps. Although the modifications of Pros and of Poullet have negatived cer-tain of the above objections, the others are still valid, and we are in per-. FiG. 68.—Insertion of Blade with Loop for Continuous Traction. (After Tamier.) feet accord with Bailly, Depaul and Pajot, who absolutely reject mechani-cal tractors. Tarnier is less positive, and he believes that, in the future,all these objections against mechanical tractors will be overcome. Starting with the assumption that manual traction varies with the mus-cular force of each individual, and from moment to moment, he provesthat mechanical traction is, on the contrary, progressive, and may fur-thermore be limited and gauged by means of the dynamometer, and thislatter adjunct is indispensable. 70 A TREATISE ON OBSTETRICS. The principal objection, in his opinion, resides in the constant actionof mechanical tractors. He has endeavored to overcome this as follows:* Through the fenestra? of an ordinary forceps he passes a double sling,the ends of which are tied together cxternalh^, and looped over a dyna-mometer. {Vide Figs. 68, fiO and 70.) This dynamometer is connectedwith a fixed
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