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The Science of Vessel Sealing Technology

Valleylab’s patented LigaSure™ vessel sealing technology

• Permanently fuses vessels up to and including 7 mm in diameter and tissue bundles without dissection or isolation
• Provides a unique combination of pressure and energy to create vessel fusion
  An optimized combination of pressure and energy creates the seal by melting the collagen and elastin in the vessel walls and reforming it into a permanent, plastic-like seal. It does not rely on a proximal thrombus.
• Feedback-controlled response system automatically discontinues energy delivery when the seal cycle is complete, eliminating the guesswork
  When the instrument determines the seal is complete, a tone sounds and output to the handpiece is automatically discontinued.
• Reduces thermal spread
  Minimizes thermal spread to approximately 2 mm for most LigaSure™ instruments; average thermal spread is less than 1 mm when using the LigaSure Precise™ instrument and approximately 1.5 mm when using the LigaSure™ V instrument.
• Unique energy output results in virtually no sticking or charring
• A clinical study demonstrated that seals withstand 3x normal systolic blood pressure
  

  High-burst-strength, feedback-controlled bipolar vessel sealing.
  Kennedy JS, Stranahan PL, Taylor KD, Chandler JG. Surg Endosc. 1998;12:876-878. [ Abstract ]