Tissue pad degradation of ultrasonic device may enhance thermal injury and impair its sealing performance in liver surgery

Figure 2 Representative trend in device temperature measured after every 10 consecutive activations, until 300 porcine liver dissections were performed. H-HD1000i (blue, solid line) and H-1100 (orange, solid line) are shown. The equations of linear trend line are as follows: H-HD1000i (blue, dot line), y = 0.285x + 69.6; H-1100 (orange, dot line), y = 0.217x + 61.1.