520 



OBHTETRWAL OPERA TIONS. 



should the tissues in which the points are implanted give way. A cord 

 passes through eyelets at the extremities of the blades, as in the other 

 models ; but sometimes the eyelets are in opposite directions, and the 

 ends of the branches in which they are pierced are bent towards each 

 other ; this variation is supposed to be accompanied by certain advan- 

 tages, as in Nelson's blunt and serrated forceps (Figs. 188, 189), some 

 of the uses of which have already been noticed. 



Some of the models of crotchet-forceps have a spring introduced 

 between the branches, and behind the joint, as in Talhch's short instru- 



Fig. 190. 

 Tallich's Short Bent Crotchet-Forceps. 



ment (Fig. 190), the jaws of which are bent to one side, and toothed ; 

 it is intended to secure a hold of the foetus, and make traction on parts 

 to which neither cords nor crotchet can be applied — as the skin of the 

 cheek, or the nose or ear, when the head is thrown back towards the 

 flank in the anterior presentation. 



Another instrument of this description has been devised by a Belgian 

 veterinary surgeon, Andre, which he designates a pince-forceps or 

 accroche-fcBtus. This is not unlike the instrument fixed in the nose of 



Fig. 191. 

 Andre's Crotchet-Forceps. 



a Bull in order to lead the animal. The points of the jaws are bevelled 

 to fit into each other, the bevel being grooved. In one of the jaws is 

 a small hole, into which is fixed a string that passes through the eye- 

 let at the end of the opposite branch, and which is pulled at when it is 

 desired to open the forceps. The two branches behind the joint are 

 very short, and through the eyelet of each passes a strong cord, the two 

 ends of which soon unite into a single piece (Fig. 191). When this is 

 pulled at the jaws close, as in the other jointed examples, and they 

 remain all the more firmly closed as the traction is great. In order to 

 use the instrument, it is passed by the hand into the uterus ; the jaws 



