Actual effective CO2 laser power on tissue in endoscopic surgery.
To elucidate the cause of power reduction in endoscopic carbon dioxide (CO2) laser surgery and to define the actual effective power on tissue of a beam delivered through different endoscopes, we designed an experimental model. In passing a CO2 laser beam through a CO2 gas-pressurized chamber, no significant power loss was noted. A correlation between the internal diameter of an endoscope and the power output became evident. Effective power of 92%, 85%, and 48% of the potential 100% was measured when a beam was delivered through single- and double-puncture laparoscopes and a hysteroscope, respectively. These figures are relevant in predicting CO2 laser effect used endoscopically.
D001274:Atmospheric Pressure; D002245:Carbon Dioxide; D019723:Endoscopes; D005260:Female; D020706:Laparoscopes; D053685:Laser Therapy; D008961:Models, Structural; D014599:Uterus
D002245:Carbon Dioxide