Joseph-Frédéric-Benoît Charrière


Joseph-Frédéric-Benoît Charrière was a Swiss-born French manufacturer of surgical instruments.
Charrière was born in Cerniat, in the Canton of Fribourg, Switzerland. He moved to Paris at age 13, and was apprenticed to a manufacturer of knives. In 1820 he founded a company manufacturing surgical instruments, which quickly grew to 400 employees by around 1840, and was world-famous by his death. He became a naturalized French citizen in 1843.
He developed and improved a number of instruments, especially hypodermic needles and catheters; the French catheter scale is named after his work. Several of his apprentices also became well-known instrument makers, including Georges-Guillaume-Amatus Lüer, Louis-Joseph Mathieu, and Adolphe Collin in Paris; Josef Leiter in Vienna; and Camillus Nyrop in Copenhagen.
He was inducted into the Legion of Honour in 1851, and died in 1876 in Paris.

Measuring unit

His name is used as a measuring unit for the outer diameter and the general size of urological instruments, endoscopes and catheters for a various purposes. In English-speaking countries, the name "Charrière" was found difficult to pronounce. Thus, the term "French" was rapidly adopted in its stead. This is now generally used as a measuring unit for medical catheters and introducers.