An Experimental Study On The Anastomosis Of Small Intestine With Annular CO₂ Laser And Medical Cement

Aim Surgeons have repaired and rebuilded the injured tissues with traditional thread suture for a long time,it has always resulted in infection,produced granulation tissue,and restricted the naturally restorative process. So we need to find a precision and less injury way in organization rebuild. The laser tissue welding maked it come true. Recent years,laser tissue welding has aroused more and more attention of many people. In this study,bowel of rabbits have been anastomosed by a kind of low power CO2 laser -annular CO2 laser and compared with stitch suture so that we can estimated the possibility of laser tissue welding through we measured the pressure of vascular and observed the pathological chang.Method Thirty rabbits, bowel were anastomosised by using 500mW output power carbon dioxide laser and compared with tradition stitch suture. Four rabbits were regarded as short-time team and we measured the pressure of vascular. Twenty rabbits were seen as long-time team and we observed the pathological changes in different time. Results The short time test: The bursting pressure of vascular can stand up with the destruct by the highest pressure of bowel. The bursting pressure is ideal. The long-time test: The bowel may heal through two anastomosis techniques, but the results have some difference. The eye-observation: There are some fiber adhesion and bowel adhesion after operation in these two groups. After two or three week,the welding bowels are hardly discriminated. But the suture bowels are founded seams and white linear scar. The pathological observation: The inflammation was slighter in the laser group after three days or one week,but in the suture group,the inflammation was more serious. There was fewer fiber tissue proliferation and scar in laser group compared with suture group.Conclusion The present study reveals that: 1. The laser tissue welding (a new surgical operational techniques) has such advantages, for example: no suture anastomosis,no import material,no needle injury,less inflammation reaction and so on that it has huge potential value. 2. The bursting pressure and pathological observation in anastomosis bowel with low power CO2 are satisfactory. 3. The anastomosis of bowel with low power CO2 is feasible.