What Is Ligasure? Advantages, Working Principle, And Benefits for Laparoscopic Hemostasis

Bleeding is one of the most troublesome issues in laparoscopic surgery and is often unavoidable. A truly skilled surgeon demonstrates solid expertise by remaining calm and achieving rapid, effective hemostasis.

Ligasure utilizes bipolar electrosurgical technology, delivering low-voltage, high-current radiofrequency energy through electrodes applied to tissue. When the jaws grasp a vessel or tissue bundle, the energy is confined to the tissue between the electrodes, causing rapid denaturation and dissolution of collagen and elastin within the tissue. At the same time, the jaws apply mechanical pressure, which works synergistically with the radiofrequency energy to promote the reorganization and fusion of the denatured proteins, forming a dense, seal-like structure. This structure effectively closes the vessel lumen and prevents blood flow.The Ligasure system is equipped with tissue-sensing technology (such as TissueFect), which continuously monitors parameters like tissue impedance and temperature, automatically adjusting energy output and jaw pressure to ensure optimal sealing across different vessel sizes and tissue types, while minimizing thermal damage to surrounding tissues.

What is Ligasure? What are the advantages of Ligasure?

Ligasure can be described as an intelligent bipolar sealing and cutting device or a feedback-controlled bipolar electrosurgical system, representing an advancement over conventional bipolar technology. Its working principle relies on lower voltage combined with a larger contact area between the jaws and tissue, allowing higher current to pass safely and enabling efficient and consistent tissue sealing. The generator incorporates a real-time feedback control system that continuously monitors tissue impedance between the jaws; once optimal coagulation is achieved, the system automatically stops energy delivery and provides an audible signal. By combining high-frequency energy with controlled jaw pressure, the system denatures and fuses collagen and elastin within the vessel wall, forming a transparent seal that ensures permanent vessel closure. In addition, an integrated blade mechanism allows the user to cut sealed tissue directly, improving procedural efficiency. Compared with conventional bipolar devices, Ligasure can theoretically seal vessels up to 7 mm in diameter and typically requires minimal tissue dissection. The resulting seal can withstand pressures exceeding three times normal systolic blood pressure, while offering fast sealing speed, minimal smoke generation, no obstruction of the surgical field, no odor, and no carbonization—therefore leaving no foreign materials such as sutures or clips. Furthermore, it operates at relatively low temperatures with limited thermal spread (approximately 1.5–2 mm), minimizing damage to surrounding tissues. Overall, Ligasure provides superior efficiency and safety compared to traditional bipolar electrosurgery, making it particularly suitable for both laparoscopic and open oncologic procedures, where it contributes to improved surgical outcomes and safety.

Our Ligasure-Style Vessel Sealer System — Comparable Performance, Optimized Experience

Our Ligasure-style vessel sealing system is engineered to deliver performance comparable to leading platforms such as Johnson & Johnson’s LigaSure™, combining reliable sealing capability with an optimized user experience. The generator features adaptive energy control through real-time impedance monitoring, ensuring consistent sealing of vessels up to 7 mm without the need for manual adjustment. Advanced thermal management limits lateral thermal spread to approximately 1–2 mm, helping protect surrounding tissues and making it well suited for delicate laparoscopic procedures. Designed for seamless integration, the system is compatible with both robotic platforms, including da Vinci systems, and standard laparoscopic instruments, with a convenient plug-and-play setup that supports efficient workflows. Intelligent safety features such as automatic optimization and lockout mechanisms enhance procedural consistency while reducing the risk of user error, and real-time audio-visual feedback provides clear confirmation of sealing status, enabling precise control and improved surgical efficiency. Overall, the system offers a level of safety, reliability, and performance aligned with established industry standards while delivering a streamlined and user-friendly experience.