Spinal posterior adjustable operation retractor

  title={Spinal posterior adjustable operation retractor},
  author={王洪伟 and 于海龙 and 杨笑 and 陈语 and 赵忆文 and 韩建达 and 刘军 and 项良碧},
An embodiment of the invention discloses a spinal posterior adjustable operation retractor. The retractor comprises a mobile arm and a fixed arm which are connected through a gear and a rack, and further comprises step-by-step extension rods and drawing blades. One end of the mobile arm and one end of the fixed arm are connected with the step-by-step extension rods respectively. The drawing blades are arranged on the corresponding step-by-step extension rods, wherein one end of each drawing… CONTINUE READING

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