Jean Louis Petit, bác sĩ phẫu thuật quan trọng nhất ở Paris trong nửa đầu của thế kỷ thứ mười tám, mô tả phát minh của mình đồ ép cho máu cầm lại vít trước khi Academie des Khoa học Hoàng gia ở Paris vào năm 1718. Ông là người đầu tiên sử dụng thuật ngữ "đồ ép cho máu cầm lại", có nguồn gốc từ Pháp tourner (biến) . | The Tourniquet Manual o@ @ @ Figure Jean Louis Petit. Reproduced by kind permission of the President and Council of the Royal College of Surgeons of England. century. There were various modifications according to Chelius a pad stuffed with hair a strong bandage an ell and a half or two ells long a stick of tough wood and a piece of leather which has on both sides a cut for the passage of the bandage allowed more precise pressure on the main artery of the Screw Tourniquet Jean Louis Petit the foremost surgeon in Paris during the first half of the eighteenth century described his invention of the screw tourniquet before the Academie Royal des Sciences in Paris in 1718. He was the first to use the term tourniquet which is derived from the French tourner to turn .5 His tourniquet was a definite advance because it did not require an assistant to hold the instrument in place and it could be released readily and reapplied instantly. The tourniquet consisted of a strap that passed around the limb and to which the screw portion was attached. When the screw was tightened pressure was brought to bear over the main vessel of the limb by a curved piece fixed to the screw. The first screws were made of wood but later they were made of brass Figures and . Various modifications of Petit s apparatus remained in use until the latter part of the nineteenth century. However o@ @ @ Historical Background Figure Petit s tourniquet. Reproduced with permission of the Wellcome Library London from Savigny JH 1798 . A Collection of Engravings. The Most Modern and Approved Instruments Used in the Practice of Surgery. The Letter Press by T. Bensley. Figure Screw tourniquet in place. Reproduced by kind permission of the President and Council of the Royal College of Surgeons of England from Sir Charles Bell 1821 . Illustrations of the Great Operations of Surgery. London Longman Hurst Rees Orme and Brown. The Tourniquet Manual o@ @ @ during the Crimean War the .
