Novel Blake drain with negative pressure in pediatric laparoscopic surgeries

Background: ： A drainage tube is generally retained after an abdominal surgery, especially in cases of postoperative bleeding or exudation. In recent years, negative pressure drainage or vacuum sealing drainage (VSD) has been extensively applied. However, the use of VSD in laparoscopic surgery is still challenging and has been rarely reported. Purpose: To introduce a novel Blake drain applied with negative pressure in laparoscopic surgeries. Materials: /Methods: Two bar-shaped cuts were made at the end of the drainage tube, with one deeper than the other, and there were no other side holes retained. Thirty patients aged 4-8 years in novel drainage tube (NDT) group received the novel VSD after laparoscopic appendectomy or laparoscopic pyeloplasty, while those in the control traditional drainage tube (TDT) group received traditional drainage using the tube bearing side holes. Results: ： Tissue plugging and other complications were not observed in patients of NDT group. Significant differences were found in volume of drainage and cases of tissue plugging between NDT and TDT groups ( P <0.05). Conclusions: : The novel technique is simple, safe and effective for VSD following laparoscopic surgery. It can prevent plugging of soft tissues into the tube and improve drainage effect.