1980 Volume 1 Issue 1 Pages 38-40
The Nd-YAG laser is now considered to have the most powerful hemostatic effect among three lasers now used in the medical field. So we applied this laser to the hemostasis in general surgery, and investigated its effect.
The medical laser system “Molectron 8000” was used for treatment. The laser beam was transmitted to the operation field through a flexible fiber.
Following operations were performed with the Nd-YAG laser at the 2nd Dep. of Sur. of University of Tokyo from Dec., 1979 to June, 1980.
We could get good results in almost all cases, especially in cases of the solid organs, such as the liver and the spleen. But at the bleeding from arteries which had a relatively large size of diameter (more than lmm), it was often impossible to cease bleeding with the laser alone.
From this research. we knew that the irradiation of the laser at a high power (70-90 watts) with a short duration (0.5-1.0 sec.) was more effctive than that at a low power with a long duration, and tha assisted gas jet was necessary for good hemostasis. We think that the Nd-YAG laser can be used in a lot of surgical cases, such as the liver resection, the splenic rupture, and pperations with hemorragic diathesis.
