566 



OPEKATIONS ON THE GENITO-URINARY APPARATUS. 



Fig. 474.— Lithotritor of Guillon. 



human surgery. It was per- 

 formed for the first time by 

 H. Bouley in 1858, with the 

 ' assistance of a practitioner 

 of human surgery, Dr. Guil- 

 lon. 



Horses are more specially 

 the subjects of this opera^ 

 tion in cases when the cal- 

 culi are too bulky and too 

 hard to be broken and re- 

 moved with the forceps 

 alone. In ruminants, on 

 the contrary, vesical calculi, 

 though more common, and 

 more numerous in single 

 animals, are generally of 

 sufficiently small size to 

 permit the relief of the pa- 

 tient by the simple opera- 

 tion of m-ethrotomy. 



The instruments neces- 

 sary for this operation are 

 the lithotritor, or lithon- 

 trijytor, with also the crush- 

 ing forceps. The lithotri- 

 tor of GuiUon (Fig. 474), 

 or the crushing forceps of 

 Bouley (Fig. 475), are those 

 generally used. We are con- 

 vinced by our experience of 

 these instruments that the 

 ^. principal, and probably the 

 only objection that apphes 

 to them lies agamst their 

 mechanical construction. 

 We consider them to be too 

 clumsy, too large and too 

 heavy; objections, howevei", 

 which are ver-y easily ob\d- 



