Hand-assisted laparoscopic surgery (HALS) is a serial emergent minimally-invasive surgery, which combines the advantages of the minimal invasion of laparoscopic surgery and intuitiveness of open surgery. Hand-assisted laparoscope (HAL) is hand-assisted device which is inserted into abdominal cavity during surgery (Johnson brand name: Blue Butterfly), also known as Hand-assisted Minimally-invasive Retractor, which allows surgeons  direct hand contact with the operative field and keeps pneumoperitoneum room of laparoscopic surgery at the same time. HAL leads surgeons back to their familiar 3D space by maintaining the tactile sense. Hand-assisted device may realize the following functions to increase surgical safety by flexible application: retracting organs to be uncovered, blunt dissections, accurate sharp dissections by piloting ultrasonic dissector and scissor, verifying the site of vessel root according to vascular pulsation, assisting to lymph node dissection by palpating lymph node, fixing a position of small sub-serosal tumor by palpation, controlling bleeding during operation expediently, minimizing the chance of injury to vital structure and decreasing conversion to open surgery.
HALS is minimally-invasive surgery as similar as laparoscopic surgery, combines laparoscopic minimally-invasive surgery and conventional open surgery to the full extent, and carries on all advantages of laparoscopic surgery, for example, turnover is rapid, patients recover fast, injury is minimal. Besides, HALS overcomes a number of disadvantages of laparoscopic surgery in clinic successfully including complex operation, long operative time, high learning curve, minimal injury, and more, which relieve the suffering of patients assuredly and is appropriately applied for many surgery including colectomy, nephrectomy, gastrectomy, splenectomy, appendectomy, anterior resection, and more.