Office of Commercialization Published Technologies
Vessel sealer using sequential compression

Vessel sealer using sequential compression


Unmet Need: Completing a vessel seal with less energy to avoid thermal injury.

Electrosurgical vessel sealing is a process commonly used to control bleeding during surgical procedures, especially in minimally invasive surgery, through mechanical clamping and joule heating. The two major issues need to be concerned are the quality of the vessel seal and the potential thermal damage to the surrounding tissues. Thermal injury to the surroundings can cause post-operative complications and a failed seal can cause internal bleeding which is a lethal complication. While improved seal strength can be achieved by advanced vessel sealers, unwanted thermal damages remain as a serious concern for surgeons when using electrosurgical vessel sealers.


The Technology: Sequential compression.

Research by WSU inventors introduces a new sequential compression concept. This concept uses a pair of smaller electrodes to sequentially compress and join multiple locations across the tissue to form a seal. Due to the smaller area of the electrode surface, a higher compression level can be achieved with a smaller compressive force. Single or multiple pairs of electrodes are used wherein one electrode pair applies force at one spot at a time for a defined short time and then moves to next spot to complete the vessel seal.



• Minimal invasive surgical procedures.

• Vessel sealing in other surgical procedures.



• Consumes 70 % less energy to form a vessel seal.

• 2.5 times more energy efficient than traditional electrosurgical vessel sealing process.

• Minimized thermal damage during the vessel sealing process.

• Improved post-operative patient outcome.


Patent Information:

Provisional patent application filed.

Patent Information: