Caroline Eichler (born in 1808 or 1809) was a German inventor, instrument maker and prostheses designer. She was the first woman in Prussia to receive a patent (for her leg prosthesis) and was also the inventor of the first practical modern hand prosthesis. 
While working as a nurse, Eichler was struck by the misery of amputees and "found myself particularly stimulated when, in the course of my business of nursing, I noticed the manifold sufferings of such unfortunate people. (...)
So I pursued the idea of (...) inventing and representing a machine that was capable of making the suffered loss of the leg of the person concerned less sensitive and detrimental."
In 1832, Eichler designed and constructed a prosthetic leg with a knee joint, for which she received a 10-year patent on 23 November 1833. She also received patents for the Russian Empire and, on 13 January 1835, for the Kingdom of Bavaria as well.
Her leg and foot patent allowed her to be the exclusive manufacturer and seller of her prosthetic for ten years.
Read more: bit.ly/3CK012o
Read more: bit.ly/3CK012o
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