Dynamic Impedance Analysis of Intestinal Anastomosis during High-Frequency Electric Field Welding Process

Biological welding: a rapid and bloodless approach to circumcision

BACKGROUND

Circumcision is essential for male health, yet traditional methods are plagued by issues such as lengthy operative times, bleeding, and slow recovery. This study explores the application of biological welding technology in circumcision, assessing its potential as a safe and efficient novel surgical approach.

METHODS

In this study, 24 male adult dogs were randomly divided into two groups. The biological welding group underwent circumcision using biological welding technology, while the control group received traditional cut-and-suture circumcision. Clinical indicators such as surgical time, blood loss, pathological changes, and recovery time were observed and compared.

RESULTS

The biological welding group had a significantly shorter surgical time compared to the control group (2.33 ± 0.55 min vs. 27.06 ± 5.77 min, p < 0.001). The control group had an average blood loss of 22.35 ± 5.17 ml, whereas the biological welding group experienced zero blood loss (p < 0.001). Recovery time was also significantly shorter in the biological welding group (12.33 ± 3.50 d vs. 16.50 ± 2.57 d, p = 0.004), with a lower incidence of postoperative complications. Pathological analysis indicated that the thermal injury range in the biological welding group was controlled within 2 mm.

CONCLUSION

Biological welding technology demonstrated advantages in circumcision, including short surgical time, no bleeding, minimal thermal damage, and rapid recovery, proving to be a safe and effective novel circumcision technique with potential clinical application value.

Assessing the influence of parameters on tissue welding in small bowel end-to-end anastomosis in vitro and in vivo

BACKGROUND

The use of high-frequency electric welding technology for intestinal end-to-end anastomosis holds significant promise. Past studies have focused on in vitro, and the safety and efficacy of this technology is uncertain, severely limiting the clinical application of this technology. This study investigates the impact of compression pressure, energy dosage, and duration on anastomotic quality using a homemade anastomosis device in both in vitro and in vivo settings.

METHODS

Two hundred eighty intestines and 5 experimental pigs were used for in vitro and in vivo experiments, respectively. The in vitro experiments were conducted to study the effects of initial pressure (50-400 kpa), voltage (40-60 V), and time (10-20 s) on burst pressure, breaking strength, thermal damage, and histopathological microstructure of the anastomosis. Optimal parameters were then inlaid into a homemade anastomosis and used for in vivo experiments to study the postoperative porcine survival rate and the pathological structure of the tissues at the anastomosis and the characteristics of the collagen fibers.

RESULTS

The anastomotic strength was highest when the compression pressure was 250 kPa, the voltage was 60 V, and the time was 15 s. The degree of thermal damage to the surrounding tissues was the lowest. The experimental pigs had no adverse reactions after the operation, and the survival rate was 100%. 30 days after the operation, the surgical site healed well, and the tissues at the anastomosis changed from immediate adhesions to permanent connections.

CONCLUSION

High-frequency electric welding technology has a certain degree of safety and effectiveness. It has the potential to replace the stapler anastomosis in future and become the next generation of new anastomosis device.