Antonin Jean Desormeaux

Antonin Jean Desormeaux (25 December 1815 – October 1894) was a 19th-century French physician and inventor who has been called the "father of endoscopy", because he made significant improvements to the early endoscope and was the first to successfully use it to operate on a living patient (his device would be called a cystoscope today). He presented his device to the French Academy of Sciences in Paris on July 20, 1853.