ABLATION OF TUMORS. 



203 



(c) With the Ecrai^eiir. — The instrument used iu this method 

 has received its name from the fact of its crushing action ujoon the 

 tissues upon which it is apphed and for which it was invented by 

 Chassaignac. The original form of the instrument of Chassaig- 

 nac has been subjected to various modifications, some being made 

 to use with a chain alone, others to carry a wire, and others 

 again to carry a chain or a wire alternately. Others like that of 

 Beynal, of IVIiles, of Smith, and many others, vary also in shape or in 

 size, but without differing in their general principles, and whether 

 employed for the removal of tumors, or in special operations, as 



Fig. 227.— Ecraseur with Wire. 



Fig. 228.— Ecraseur with Chain or Wire. 



those ot castrations in males, or spaying in females, the modus 

 operandi remains the same. This consists in enclosing the base 

 or peduncle of the tumor with the chain or wire of the instru- 

 ment, and tightening it more or less rapidly at the discretion of 

 the operator, by means of the screw in the handle until it is com- 

 pressed, strangulated and crushed, and at last entirely separated. 

 The action should be more or less gradual, according to the size 

 of the parts and the consistency and vascularity of the tissues. A 



