Watch this informative video on How Ligasure Works and understand the advanced vessel sealing technology used in modern laparoscopic and surgical procedures. This educational video explains the mechanism of Ligasure energy delivery, tissue sealing process, and its advantages in reducing blood loss and improving surgical precision.

If you are a surgeon, medical student, or healthcare professional, this video will help you learn how Ligasure enhances safety and efficiency in surgery. Stay tuned for more surgical learning video content from leading experts in minimal access surgery.

LigaSure is a bipolar electrosurgical device designed to deliver high current and very low voltage to tissue. It monitors tissue impedance between the jaws of the instrument and continuously adjusts the delivery of energy. LigaSure vessel sealing technology works by applying a precise amount of bipolar energy and pressure to fuse the collagen and elastin in the vessel walls. It effectively seals vessels 1 to 7 mm in diameter with minimal sticking, charring, or thermal spread.

LigaSure is an advanced vessel sealing technology widely used in open and minimally invasive surgeries to achieve reliable hemostasis. It is designed to seal blood vessels and tissue bundles safely and permanently using a controlled combination of pressure and energy, reducing the need for sutures, clips, or traditional ligation methods.

1. Basic Working Principle

LigaSure works on an electrothermal bipolar mechanism. The device has two main components:

• An electrosurgical generator

• Bipolar sealing instruments (forceps or laparoscopic handpieces)

When tissue or a blood vessel is grasped between the jaws of the instrument, the generator delivers radiofrequency energy. At the same time, the jaws apply precise mechanical pressure. This combination transforms the collagen and elastin inside vessel walls, creating a permanent fused seal that closes the vessel lumen.

2. Smart Energy Delivery

A key feature of LigaSure is its feedback-controlled technology. The generator continuously measures tissue resistance and adjusts energy output automatically. Once the optimal seal is achieved, the device stops energy delivery and often signals completion with an audible tone. This reduces guesswork and improves consistency.

3. Biological Effect on Tissue

Unlike conventional electrocautery that mainly carbonizes tissue, LigaSure works by:

• Denaturing tissue proteins

• Removing water from tissue

• Fusing vessel walls using the patient’s own collagen and elastin

This results in a strong, translucent seal capable of withstanding pressures several times higher than normal systolic blood pressure.

4. Vessel Sealing Capacity

LigaSure can reliably seal vessels up to about 7 mm in diameter, which is larger than many conventional bipolar systems. The seal is usually achieved in a single application and typically takes only a few seconds.

5. Safety Advantages

LigaSure technology offers several surgical benefits:

• Minimal lateral thermal spread to surrounding tissue

• Reduced smoke and tissue charring

• Faster sealing and reduced operative time

• Less blood loss compared to traditional ligation techniques

6. Clinical Use

LigaSure is commonly used in general surgery, gynecology, urology, colorectal surgery, and laparoscopic procedures where vessel ligation and tissue division are required.

Summary

In simple terms, LigaSure works by clamping tissue, applying controlled bipolar radiofrequency energy, and fusing vessel walls using pressure and heat. The smart feedback system ensures consistent, strong sealing with minimal damage to surrounding tissues, making it a reliable tool in modern surgical practice.