Cyclopædia of obstetrics and gynecology . Fig. 64.—Joulins Aitaratus Applied, and ?Working.—4, Canula and movable screw. B,Handle of instrument. C, Dynamometer attached to screw. E, Filets, passing from fenestrae todynamometer. F, Metal plate. The filets glide over the lower border. operator should stop for awhile. The duration of the operation is fromten to thirty minutes. The canula must be held horizontally. The firsttractions compress the soft parts against which the disk is applied. Trac- 64 A TREATISE ON OBSTETRICS. tion in the pelvic axis is maintained by the point of reflexion of the l
Cyclopædia of obstetrics and gynecology . Fig. 64.—Joulins Aitaratus Applied, and ?Working.—4, Canula and movable screw. B,Handle of instrument. C, Dynamometer attached to screw. E, Filets, passing from fenestrae todynamometer. F, Metal plate. The filets glide over the lower border. operator should stop for awhile. The duration of the operation is fromten to thirty minutes. The canula must be held horizontally. The firsttractions compress the soft parts against which the disk is applied. Trac- 64 A TREATISE ON OBSTETRICS. tion in the pelvic axis is maintained by the point of reflexion of the lowerborder of the disk, which partially occludes the vulva. Joulin has proved experimentally that manual tractions with the for. Fig. 65.—Apparati s of Pros de la Rochellk. ceps, instead of being regular and continuous, are abrupt and broken atshort intervals, the force employed varying from 84 to 132 pounds, whilemechanical tractions are regularly sustained, and may always be graduatedby the dynamometer. THE FORCEPS. 65 Apparatus of Pros de la RocJielle.—Pros is also a partisan of mechani-cal traction, and uses tlie following apparatus, (Fig- ^5), consisting of: 1. A movable shelf, to be placed on a bed or a table, on which thewoman lies, and allowing of different positions. It is inchesin dimensions. 2. Bracelets, not indispensable, for holding the woman in place. 3. A movable rod, 21 to 26 inches long, articulating with the movable, it allows the accoucheur to make traction on theforceps with almost mathematical precision in the axis of the strait, evenwhere the pelvis is oblique or oval. The attached handle has simply tobe depressed in a half circle to exert a force of 58 to 3
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Keywords: ., bo, bookcentury1800, booksubjectgynecology, booksubjectobstetrics
