Jan Mikulicz-Radecki invented the deaver retractor. The deaver
retractor is a medical device that was invented in the year of
1904.
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A volkman retractor is a type of tissue retractor used during
ceritan surgeries to separate incised tissues. Google images it for
pictures.
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it is a self retaining retractor, which is used to retract wound
edges.
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It is a type of metal retractor used to keep the abdominal
cavity open during surgery
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The retractor is used orthopedic surgery to retract tissue from
bone. Although now commonly called the US retractor, it was
developed by military physicians for use in surgery to repair
severe injuries sustained in training and combat.