594 



ACCIDENTS INCIDENTAL TO PARTURITION. 



which is about eight inches long, and has at each end an aperture (O O), 

 in which are fastened the cords or straps destined to fix the apparatus. 



When required for use, the ring is wrapped in a narrow piece of fine 

 linen, which is rolled round it in a uniform manner, so that it may not 

 irritate the 'neck of the uterus, with which it has to come in contact. 

 This part is well oiled, and being passed through the vagina, is so placed 

 against the uterus that the cervix will be in the middle of the ring, which 

 should make pressure on the cul de sac of the vagina. It is secured by 

 means of cords or straps at the end of the transverse portion, in a simi- 

 lar manner to the other pessary. 



The Cup-and-ball pessary (Fig. 198), invented, or first described by 



Fig. 197. 

 Ring Pessary. 



Fig. 

 Cup-and-Ball Pessary. 



Chabert, is not at all unlike the last. It is composed of a round iron or 

 steel ring (A A), about the same in diameter as the other ; from this 

 springs three stalks (B B B) which unite about six or seven inches from 

 the ring into a single stalk (T T), which is screwed from a little beyond 

 this union to the end. On this screwed portion moves a transverse piece 

 (C C), by its middle opening, or female screw (E) ; this piece has open- 

 ings (G G) at its extremities, which receive straps or cords. 



To use it, the ring and the three branches are dipped in melted wax, 

 then cooled, and again and again dipped and cooled, until the instrument 

 has acquired a sufficient volume, and the middle of the ring is reduced to 



