title: Spindle-like abdominal wall-lifting device in gasless laparoscopic surgery in animal experiments.
abstract: BACKGROUND
  CO2 pneumoperitoneum has been used to establish an operation space in laparoscopic surgery. It may have some bad consequences, such as respiratory and circulatory system changes, hypotension and hypoxia in infants and the release of free tumor cells into the abdominal cavity. Gasless laparoscopic technique can avoid these adverse effects. But present gasless laparoscopic techniques have their own disadvantages. The main shortcoming of gasless laparoscopic techniques is inadequate operative space.
  
  
  METHODS
  We herein describe a new technique. We used a self-designed spindle-like abdominal wall-lifting device to perform gasless laparoscopic cholecystectomy in seven pigs, recording the operation time, bleeding volume and unexpected occurrences during the operation.
  
  
  RESULTS
  Seven pigs underwent laparoscopic cholecystectomy using this technique with no conversion to open operation. The operation time was between 21 minutes and 65 minutes, with a mean operative time of 42.5 minutes. The range of bleeding volumes was 2 ml to 8 ml, with a mean operative bleeding volume of 4.3 ml. There were no massive hemorrhages, internal organ injuries or other complications during the operation.
  
  
  CONCLUSIONS
  These preliminary outcomes indicate that the spindle-like abdominal wall-lifting device is feasible and safe in gasless laparoscopic cholecystectomy, which can provide sufficient exposure of the operative filed.
authors.affiliation: Department of General Surgery, The People's Hospital of Guangxi Zhuang Autonomous Region , Nanning City, Guangxi Zhuang Autonomous Region , China.
authors.forename: Dongbo
authors.initials: D
authors.lastname: Wu
authors.forename: Kuihua
authors.initials: K
authors.lastname: Geng
authors.forename: Zerong
authors.initials: Z
authors.lastname: Feng
authors.forename: Xinhua
authors.initials: X
authors.lastname: Shao
authors.forename: Sujiao
authors.initials: S
authors.lastname: Qin
authors.forename: Xiang
authors.initials: X
authors.lastname: Chen
authors.forename: Guangping
authors.initials: G
authors.lastname: Zheng
authors.forename: Shengfu
authors.initials: S
authors.lastname: Yang
mesh_terms: D034861:Abdominal Wall; D000818:Animals; D017081:Cholecystectomy, Laparoscopic / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D006470:Hemorrhage; D061646:Operative Time; D011028:Pneumoperitoneum, Artificial; D013552:Swine
keywords: Instrument design; innovation; laparoscopic instruments; laparosocpic cholecystectomy