Evaluation of the Learning Curve in Low Anterior Resection for Rectal Resection With the Two Surgical Robots

Evaluation of the Learning Curve in Low Anterior Resection for Rectal Resection With the Two Surgical Robots

Accelerated Learning Curve in Low Anterior Resection for Rectal Resection, a New Surgical Robot Micro Hand S Versus da Vinci, Can be Attained Simultaneously: a Single Center Experience

Central South University in collaboration with Tianjin University developed the first domestically produced Chinese minimally invasive surgical (MIS) robot system which named "Micro Hand S" in 2013. This new MIS robot had been authorized to enter the clinical trial stage by the Ethics Committee of the Third Xiangya Hospital at Central South University. The Micro Hand S robot is safe and feasible in the preliminary study. However, the learning curve in low anterior resection for rectal resection with the Micro Hand S robot are unclear and whether the two surgical robots (Micro Hand S and da Vinci) shared a similar learning curve and the two robot can be trained simultaneously. Therefore, the investigators conduct this retrospective study to focus on this concern.

The Micro Hand S robor has been appiled in low anterior resection for rectal cancer. The safey and feasibility has been evaluated. However, the learning curve of this procedure is unclear. Specially,whether the two surgical robots (Micro Hand S and da Vinci) shared a similar learning curve and the two robot can be trained simultaneously are unclear.Therefore, this srudy is conducted to evaluate the learning curve of the two robots in low anterior resection.

This group is consisted of 56 cases performed using the Micro Hand S robot and da Vinci robot by one single surgeon in low anterior resection for rectal cancer

This group is consisted of 56 cases performed using the da Vinci robot by one single surgeon in low anterior resection for rectal cancer

It was defined as what type of procedure was pferformed, for example, low anterior, abdominal perineal resection

The docking time was the time from moving robotic instruments in the surgical field to setting robotic arms into the port sites

Surgical failure was defined as the presence of one or more of the following four parameters: conversion, the positive surgical margins, severe postoperative complications, the number of harvested lymph nodes less than 12

It was defined as whether the distal and circumferential resection margins was involved the tumor cell under microscope

It was defined as the adverse events after operation and the complications were classfied according to the Clavien-Dindo (C-D) classification

Inclusion Criteria: histologically confirmed rectal cancer; ASA score ≤ 3 Exclusion Criteria: palliative resections, combined resections, distant metastasis, a previous history of abdominal/or pelvic surgery