Literature review of the energy sources for performing laparoscopic colorectal surgery

Figure 1 Retroperitoneum dissection. A and B: After a small incision for the retroperitoneum is performed, the incision is enlarged, sealing forwards to the right while hooking with the ultrasonic surgical blade of the Harmonic ACE or clamping with the tissue pad and the ultrasonic surgical blade; C and D: When the incision is enlarged forwards to the left, cutting is performed by clamping with the ultrasonic surgical blade and the tissue pad of the Harmonic ACE, applying the tissue pad to the vessel side in order to decrease the thermal damage to adjacent structures.