Anesthesia


Mouth opener (5)

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Roser-Koenig mouth opener, about 1940

 

 

This ROSER-KOENIG mouth opener was invented in  1858.

 


Wilhelm ROSER (1817-1888) was a surgeon in Marburg.


Franz KOENIG (1832-1910) was his assistant doctor in 1858 before becoming a surgeon in Göttingen and Berlin. He was specially interested in artificial respiration and heart massage.