![18th century surgeon Jean Louis Petit's screw tourniquet for compressing blood vessels: tourniquet device 1, double band to adjust the tourniquet 2, compress in chamois leather 3 and ball bearing 4. Copperplate 18th century surgeon Jean Louis Petit's screw tourniquet for compressing blood vessels: tourniquet device 1, double band to adjust the tourniquet 2, compress in chamois leather 3 and ball bearing 4. Copperplate](https://c8.alamy.com/comp/P9H84T/18th-century-surgeon-jean-louis-petits-screw-tourniquet-for-compressing-blood-vessels-tourniquet-device-1-double-band-to-adjust-the-tourniquet-2-compress-in-chamois-leather-3-and-ball-bearing-4-copperplate-engraving-by-robert-benard-from-denis-diderots-encyclopedia-pellet-geneva-1779-P9H84T.jpg)
18th century surgeon Jean Louis Petit's screw tourniquet for compressing blood vessels: tourniquet device 1, double band to adjust the tourniquet 2, compress in chamois leather 3 and ball bearing 4. Copperplate
![The Old Operating Theatre Museum & Herb Garret on X: "The humble tourniquet. A #toolsofthetrade workhorse and worthy of a spotlight! This one from our collection is a 19th-century Petit-type tourniquet with The Old Operating Theatre Museum & Herb Garret on X: "The humble tourniquet. A #toolsofthetrade workhorse and worthy of a spotlight! This one from our collection is a 19th-century Petit-type tourniquet with](https://pbs.twimg.com/media/FSjJHHnXEAEyTZj.jpg)
The Old Operating Theatre Museum & Herb Garret on X: "The humble tourniquet. A #toolsofthetrade workhorse and worthy of a spotlight! This one from our collection is a 19th-century Petit-type tourniquet with
![Jean-Louis Petit (1674–1750): a pioneer anatomist and surgeon and his contribution to orthopaedic surgery and trauma surgery | International Orthopaedics Jean-Louis Petit (1674–1750): a pioneer anatomist and surgeon and his contribution to orthopaedic surgery and trauma surgery | International Orthopaedics](https://media.springernature.com/m685/springer-static/image/art%3A10.1007%2Fs00264-018-3978-8/MediaObjects/264_2018_3978_Fig3_HTML.gif)
Jean-Louis Petit (1674–1750): a pioneer anatomist and surgeon and his contribution to orthopaedic surgery and trauma surgery | International Orthopaedics
![Jean Louis Petit (P, Artists, Arts) Collection available as Framed Prints, Photos, Wall Art and Photo Gifts Jean Louis Petit (P, Artists, Arts) Collection available as Framed Prints, Photos, Wall Art and Photo Gifts](https://www.mediastorehouse.com/t/164/18th-century-surgeon-performing-trepanning-23168422.jpg.webp)
Jean Louis Petit (P, Artists, Arts) Collection available as Framed Prints, Photos, Wall Art and Photo Gifts
![File:Jean-Louis Petit. Line engraving by J. Balechou, 1765, after Wellcome V0004623.jpg - Wikimedia Commons File:Jean-Louis Petit. Line engraving by J. Balechou, 1765, after Wellcome V0004623.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/3/3e/Jean-Louis_Petit._Line_engraving_by_J._Balechou%2C_1765%2C_after_Wellcome_V0004623.jpg)