Abstract
Experimental studies on small vessel anastomosis, small arterial transplantation and closure of small vessel incision were done using 102 mongrel dogs by hand suture method.
Significances of operative binocular microscope, suture material (Silk and Nylon monofilament and plastic adhesive (Aron-Alpha 201, 202 and Eastman 910) were also investigated in small vessel surgery.
1) In end to end anastomosis of small arteries, patency rate was 90% in nylon thread suturing with plastic adhesive, It is considered that the suturing procedure must be done under operative binocular microscope in the arteries less than 2.9mm of external diameter, and that the arteries more than 3.0mm can be sutured under the naked eye observations.
2) In end to end anastomosis of small veins, patency rate was obtained 90% in every method because of their large size of diameter.
But hand suture anastomosis of mesenteric vein was so diffcult that it should be anastomosed with mechanical apparatus.
3) The most excellent substitute for small arteries was autogenous veins, and the patency rate was 85% in this grafting.
4) patency rate in simple closnre of incised vessels using plastic adhesive was 100% with and without suturing.
5) In operative procedures of small vessels, all layer of vascular wall were sutured roughly and then sutured area was glued over with plastic adhesive.
By doing so, stenosis and bleeding in the site of anastomosis could be almost prevented. In practice, this method is significant to supplement the imperfection of mechanical suturing apparatus and microscopic method.
6) Hand suture method using plastic adhesive was applied in 45 clinical cases, and it obtained very effective results.
