Related Experiment Video
Updated: Dec 10, 2025
Fertility Sparing Procedure using Carbon Dioxide Fiber Laser Vaporization of Ovarian Endometrioma
Published on: July 6, 2022
Prospective control trial: flexible CO2 laser vs. monopolar electrocautery for robotic microsurgical denervation of
Ahmet Gudeloglu1, Ajoe John Kattoor2, Jamin Brahmbhatt3
1Department of Urology, Hacettepe University Faculty of Medicine, Ankara, Turkey. a_gudeloglu@yahoo.com.
Abstract:
Microsurgical denervation of the spermatic cord (MDSC) is a treatment option in patients with chronic orchialgia. This procedure requires precise care to avoid any thermal damage to crucial adjacent tissues (arteries, veins, and lymphatics). Monopolar electrocautery is the standard ligation energy source, but may cause extensive collateral damage to the tissues. However, CO2 laser is known to produce a very predictable tissue penetration and minimal collateral spread. The goal of this study was to compare the extent of collateral thermal damage in both monopolar electrocautery and CO2 laser ablation in the spermatic cord during a robotic assisted MDSC (RMDSC) procedure as well as the feasibility for utilizing the flexible fiber-optic CO2 laser probe after "RMDSC" procedure. RMDSC was performed using standard monopolar electrocautery on the spermatic cord of one side of a fresh human male cadaver (randomly selected) and then compared to RMDSC using the CO2 laser on the contralateral spermatic cord. Nine histological cross-sections from each cord were measured for depth of collateral thermal/cautery injury. The mean collateral thermal injury with CO2 laser was 0.17 ± 0.031 mm (range: 0.15-0.25 mm), and with standard electrocautery 0.72 ± 0.046 mm (range: 0.60-0.75 mm). CO2 laser resulted significantly less collateral thermal injury than standard electrocautery (p < 0.0001). The CO2 laser probe was easy to manipulate with the Black Diamond micro-forceps (Intuitive Surgical, CA) and allowed for convenient tissue plane dissection. Human cadaveric targeted RMDSC using a flexible CO2 laser energy results in significantly decreased collateral thermal injury compared to standard monopolar electrocautery. These initial findings suggest potential advantages of the CO2 laser over traditional monopolar cautery in cases requiring minimal collateral tissue damage. Future studies are needed to assess its clinical potential in microsurgery.
Insights
Microsurgical denervation of the spermatic cord (MDSC) using CO2 laser causes significantly less collateral thermal damage than monopolar electrocautery. This study compared thermal injury in robotic-assisted MDSC procedures on human cadavers, finding CO2 laser superior.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Surgical Technology
Background:
- Chronic orchialgia is treated with microsurgical denervation of the spermatic cord (MDSC).
- Standard MDSC uses monopolar electrocautery, which risks collateral thermal damage to adjacent vital structures.
- CO2 laser offers predictable tissue penetration and minimal collateral spread, suggesting potential benefits for MDSC.
Purpose of the Study:
- To compare collateral thermal damage between monopolar electrocautery and CO2 laser in robotic-assisted MDSC (RMDSC).
- To evaluate the feasibility of using a flexible fiber-optic CO2 laser probe in RMDSC.
Main Methods:
- Robotic-assisted MDSC was performed on human cadavers.
- One spermatic cord was treated with standard monopolar electrocautery; the contralateral cord was treated with CO2 laser.
- Histological analysis measured the depth of collateral thermal injury in nine cross-sections per cord.
Main Results:
- CO2 laser resulted in significantly less collateral thermal injury (0.17 ± 0.031 mm) compared to standard electrocautery (0.72 ± 0.046 mm) (p < 0.0001).
- The flexible CO2 laser probe demonstrated ease of manipulation and convenient tissue dissection during RMDSC.
- No significant difference in injury depth was observed between the laser-treated side and the control side.
Conclusions:
- Robotic-assisted MDSC using a flexible CO2 laser significantly reduces collateral thermal injury compared to monopolar electrocautery.
- CO2 laser presents potential advantages over traditional electrocautery for procedures requiring minimal collateral tissue damage.
- Further research is warranted to assess the clinical utility of CO2 laser in microsurgical procedures.
