Introduction: This report describes the techniques and outcomes of robot-assisted distal gastrectomy (RDG) for gastric carcinoma using an oval-shaped port device.
Materials And Methods: A total of 15 patients underwent RDG with lymphadenectomy using the E‧Z Access/LAP-PROTECTOR oval-type device (Hakko Co., Ltd., Tokyo, Japan) performed by a single surgeon between 2018 and 2019. This device was introduced to the umbilicus under two settings, depending on the patient's figure. A horizontal setting (n=7) was used to reduce the number of trocar skin incisions in thin patients by placing a scope trocar and assist port within the E-Z Access. The vertical setting (n=8) was used for large and obese patients, enabling the endoscope position to move 50mm toward the cephalad side by rotating the device 180° to improve the surgical view of the suprapancreatic area ("dual port position" using the E‧Z Access oval-type device). The intracorporeal Billroth-I anastomosis or Roux-en-Y method was used for reconstruction. The short-term patient outcomes were determined to assess the safety and feasibility of our procedures.
Results: The E-Z Access oval-type device was useful for maintaining an optimal surgical field and reducing the number of skin incisions and the level of surgeon stress. Furthermore, its removal cap and wound protector allowed for an airtight seal, umbilical wound protection, and smooth specimen removal and re-pneumoperitoneum. R0 resection was accomplished in all cases without the need for conversion to open or conventional laparoscopic surgery. The median operating time was 323 (range, 245-590) minutes, and the median blood loss was 5ml. The median number of retrieved lymph nodes was 30. Neither major postoperative complication, including umbilical skin damage, nor postoperative mortality, was observed. The mean length of the hospitalization was 12.5 days.
Conclusions: Our robotic approach using an oval-shaped port device for gastric cancer patients is feasible in terms of patient safety and curability.
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