Research on the Effect of the Energy Distribution of Dual-Beam Laser 980 and 1064 nm on Skin Tissue Soldering Performance

Laser tissue soldering technology (LTS) is an emerging minimally invasive surgical method for skin tissue connection. This study developed a dual-beam laser system operating at 980 and 1064 nm to assess the impact of energy density and energy ratio on soldering performance. Results showed that both factors significantly influenced the tensile strength and thermal damage of the tissue. Using a dual-beam laser to connect skin tissue incisions can significantly improve the strength of the tissue connection while minimizing thermal damage. The optimal conditions were found at an energy density of 43.76 J/mm² and an energy ratio of 2:1, leading to enhanced tensile strength and minimal thermal damage. Microstructure analysis indicated that dual-beam laser connections created a simpler and more uniform tissue texture compared to single-beam connections, which appeared more complex. This study offers valuable insights for optimizing LTS technology in minimally invasive surgery.