How Does a Vessel Sealing Device Work? Different Types of Vessel Sealing Machines

In modern surgical practice, efficient bleeding control is a top priority. Whether performing laparoscopic, open, or robotic-assisted procedures, surgeons rely on vessel sealing devices to securely close blood vessels and soft tissue bundles without clips or ties. These devices not only reduce operative time but also minimize blood loss and the need for transfusions.

How Vessel Sealing Devices Work

A vessel sealing device works by delivering energy, usually bipolar radiofrequency or ultrasonic—through instrument jaws to compress and denature the proteins in the vessel wall. Under heat and pressure, collagen and elastin fibers are fused, creating a permanent seal. Once sealed, vessels can be safely cut without bleeding.

The general process involves four steps:

Grasp the vessel with energy-enabled jaws

Deliver energy to denature vessel proteins

Compress the tissue to facilitate fusion

Cut or transect the sealed area (in many systems)

This mechanism allows vessel sealing machines to handle arteries, veins, and tissue bundles up to 7mm in diameter. It's a reliable method used across disciplines, including general surgery, gynecology, urology, and thoracic procedures.

Understanding the Different Types of Vessel Sealing Machines

Vessel sealing technology isn't one-size-fits-all. The type of vessel sealing device chosen often depends on the procedure, energy preference, and tissue type. Here's a breakdown of the main categories:

1. Bipolar Vessel Sealing Devices

These systems deliver radiofrequency energy between two electrodes located in the instrument jaws. Because the current travels only between the jaws, thermal spread is minimized.

Bipolar vessel sealing machines are ideal for:

Laparoscopic colectomy

Hysterectomy

Lymphadenectomy

Organ resections

2. Ultrasonic Vessel Sealing Devices

Ultrasonic systems use high-frequency mechanical vibrations to create friction and heat within tissue. This technique seals vessels and simultaneously cuts tissue with reduced charring and smoke.

The EasyUS Ultrasonic Surgical System from Ezisurg Medical exemplifies this approach. Designed for precision and minimal thermal damage, EasyUS combines vessel sealing and dissection in a single ergonomic instrument. It's especially useful in surgeries involving delicate structures, such as endocrine or urologic cases.

3. Hybrid Vessel Sealing Platforms

A few advanced platforms integrate both bipolar and ultrasonic technologies into a single device. These hybrid vessel sealing devices provide enhanced flexibility but are typically reserved for complex cases due to higher cost and limited availability.