Circulating Water Balloon レーザー照射法

抄録

The endoscopic Nd-YAG LASER irradiation therapy has been utinized in the treatment of upper GI cancers. There is lacking, however, of the suitable LASER irradiation modality for intestinal cancers, due to the danger of perforation with the existing LASER therapy. To overcome this problem, we made a new LASER irradiation device, “Circulating Water Balloon LASER irradiation system”, and reported that we were studying its characteristics for clinical application. The character of this system is moderate coaguration without unfavorable tissue vaporization. In this time, we examined this system on the colon of dogs, and continuously measured the temperature of 37 points on the serosa during LASER irradiation. Compared to the results given from the conventional modality, more moderate coaguration was achieved without unfavorable perforation. And the balance of temperature was able to been maintained by the cooling effect of this system. Tissue coaguration could be limited to sm-layer or pm-layer, even to the trans mural coagulation was possible by using this system. In addition, with low powered irradiation, it worked as “LASER thermia”. So, we concluded that more precise and safer LASER therapy for intestinal cancers would be possible.