1 88 Surgical Diseases and Surgery of the Dog 



ance that the circulation be preserved up to the very row of sutures. 

 All the circulation possible is needed to effect rapid coalescence 

 of the parts, and to ward off gangrene. The area of intended re- 

 section and the blood supply of the same being mapped out, the 

 mesenteric vessels are first secured by ligature, which is best done 

 by means of a curved needle and fine suture passed through the 

 mesentery and around them. The anastomosing loops running 

 near the mesenteric attachment are secured at a point level with the 

 proposed line of resection. 



One prong of the hair-pin is passed through the mesentery 

 at the upper point of resection, and both are brought transversely 



No. 42b, Hair-pin method of anastomosis. First stage. 



across the gut. The other pin is affixed in the same manner at the 

 lower line of resection. No other bowel clamp is needed when the 

 pins are used, as the lumen is closed from the outset. 



The intestine is severed with scalpel quite close to the clamped 

 prongs of the pin. The pin effectually inhibits all vermicular ac- 

 tion of the wall. The incision is extended to the mesentery, so as to 

 remove a wedge-shaped portion. The two pins are approximated 

 and tied tightly together, or they may be locked by means of addi- 

 tional hemostatic forceps. The sutures are now placed on one side, 

 starting at the mesenteric attachment. They are tied before pro- 



