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Abstract
This study evaluated the direct and indirect thermal effects of various surgical energy devices using an ex-vivo model. Two types of three devices were evaluated: ENSEAL™ X1 Curved Jaw Tissue Sealer (X1) and ENSEAL™ G2 Curved Tissue Sealer (G2) as vessel sealing systems (VSSs), and HARMONIC® HD1000i Shears (HA) as an ultrasonic activating device (USAD). Each device was activated once under DRY or WET conditions. The tissue’s maximum temperature (MT), steam MT surrounding the activation site, and steam spread area (SSA) were measured. Under WET conditions, the median MT of a porcine common carotid artery at 1 mm from the activation site by X1, G2, and HA were 84.4, 83.3, and 50.5 °C, respectively. The direct thermal effect of HA was the lowest among the three devices. VSSs showed higher tissue MT under WET conditions compared with DRY conditions. Conversely, USAD showed the opposite trend. G2 demonstrated a significantly higher MT than X1 and HA (P < 0.05). A significant decrease in SSA was observed with decreasing grasping range. In conclusion, VSSs generated higher temperatures than USAD, especially under WET conditions. Surgeons should consider minimizing thermal effects by creating DRY conditions or performing gradual incisions when using VSS devices.
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Details
1 Nagoya City University Graduate School of Medical Sciences, Department of Nephro-urology, Nagoya, Japan (GRID:grid.260433.0) (ISNI:0000 0001 0728 1069)
2 Nagoya City University Midori Municipal Hospital, Department of Urology, Nagoya, Japan (GRID:grid.260433.0) (ISNI:0000 0001 0728 1069)
3 Nagoya City University East Medical Center, Department of Urology, Nagoya, Japan (GRID:grid.260433.0) (ISNI:0000 0001 0728 1069)
4 Nagoya City University West Medical Center, Department of Urology, Nagoya, Japan (GRID:grid.260433.0) (ISNI:0000 0001 0728 1069)