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Anesthesia through ether vapor
The ether vapor inhalation anesthesia device like that exhibited at the Hôtel-Dieu museum of the Hospices de Beaune was invented by the French anatomist and surgeon Louis Ombredanne (1871-1956) in 1907 and used for fifty years. His prototype had a pewter tank completed with a rubber bead, a needle pressure gauge graduated from 0 to 8, and a bladder bag. The two rings placed on the sides made it possible to apply the mask to the patient's face, while the spherical tank containing sponges or felts received the ether, whose propagation was increased by one degree every minute. Following the invention, the Parisian manufacturer of surgical instruments Anatole Collin (1831-1923) registered on March 3, 1908, a patent for a device intended for general anesthesia with ether which he adapted in three sizes to fit the patients' faces.
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