Doyen's progressive pressure clamp for total abodominal hysterectomy, heavy duty steel clamp, with ring handles, by Collin, c. 1890, from the collection of Charriere, Collin and Gentile

This clamp was used to prevent heavy bleeding between the uterus and the ovaries during a hysterectomy through the abdomen. This was a constant fear during the operation. The pressure of the clamp could be varied and applied in a number of areas at the same time. It was probably invented by Eugène-Louis Doyen (1859-1916), a French surgeon renowned from his skill and speed who invented a large number of surgical instruments to aid his work. Controversially, Doyen was filmed performing a hysterectomy. Later, copies of the film were illicitly distributed in fairgrounds and amusement parks.