The UltraCision  instrument acts by occluding vascular structures by protein denaturation induced by a longitudinal oscillating titan blade that breaks up intracellular hydrogen bonds. Tissue dissection is performed through cellular wall destruction by rapid changes of the intracellular volume.
Its major advantages are a possible permanent occlusion of blood vessel and bile ducts up to a diameter of 1-2 mm, and larger vascular structures can be safely isolated, since the coagulation is limited to the cut surface. The number of sutures needed to achieve hemostrasis is reduced.