Low-voltage coagulation for welding sutures watertight: an experimental study

Area of Science:

• Biomedical Engineering
• Surgical Innovation
• Wound Closure Technology

Background:

• Conventional skin suturing is a standard method for wound closure.
• Evaluating novel techniques for improved wound healing and integrity is crucial.
• Low-voltage coagulation welding presents a potential alternative for tissue approximation.

Purpose of the Study:

• To assess the watertightness of sutures created using low-voltage coagulation.
• To compare the efficacy of low-voltage coagulation welding against conventional skin suturing in a rat model.
• To determine if adjuncts like protein solder or additional sutures enhance welding performance.

Main Methods:

• Development of a rat model to evaluate suture watertightness.
• Application of low-voltage coagulation current for tissue welding.
• Measurement of mean leak pressure to quantify watertightness.
• Comparison of leak pressures between welded and conventionally sutured tissues.

Main Results:

• Low-voltage coagulation welding yielded a mean leak pressure of 4.2 cm H2O.
• Conventional skin suturing achieved a significantly higher mean leak pressure of 14.1 cm H2O.
• Neither protein solder nor additional conventional sutures improved the watertightness of welded tissues.

Conclusions:

• Low-voltage coagulation is not effective in improving the watertightness of skin sutures.
• The tested welding technique is statistically inferior to conventional suturing for achieving watertight closure.
• Current low-voltage coagulation methods are unsuitable for practical tissue welding applications in surgery.