Objective To design a modular two-direction scalpel handle with easy assembly and disassembly to solve the problems of common handle in function singleness,directivity,assembling and disassembling,pick-up and etc.Methods A scalpel handle module involving in a single-groove two-direction tailstock,multifunctional handle and etc was designed according to international standards,which consisted of more than 10 kinds of instruments for orthopedic surgery and etc such as two-direction scalpel handle with easy assembly and disassembly,bent wrench,probe introducer,needle-knife remover and measuring tools.Simulation experiment,clinical trial and control test were carried out to verify the efficacy of the handle module.Results It's proved that the handle module gained advantages in safety,convenience,prevention of sharp instrument injury,decrease of human errors and etc.Conclusion The handle module behaves well in modularity,integration,multifunction,two-direction adaptability,easy assembly and disassembly,safety,storage and carrying,high costperformance ratio and etc,meets the requirements of Joint Commission on Accreditation of Healthcare Organization,and is suitable for military and civilian uses.

Objective In order to overcome the disadvantages of the common single handle cold scalpel such as cicatrix cutting inefficient, large amount of skin losses, margin concave and convex, cutting marks poor healing, a safe and general type of convenient instalation and instantly removable“A”shaped scalpel handle was developed. Methods For the convenience of the single hand independent, cicatrix cutting smoothly and conveniently, man-machine design“A”shaped scalpel handle and application. ResultsThe“A”shaped scalpel handle has good precision and controllability. When loading or unloading the blades, it's convenient, efficient and safe, free choice of direction. Conclusion The“A”shaped scalpel handle with cicatrix cutting single hand is independent, universal for al blades, can conveniently instal and instantly remove, is portable and easy to storage, has wide range of applications. The prevention of sharp instrument injuries reduces the occupation injury risks and improves operation efficiency.