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Charles Pravaz
Charles Gabriel Pravaz (24 March 1791 – 24 June 1853), a French orthopedic surgeon, pioneered the hypodermic syringe. While the concept dated to Galen, the modern syringe is thought to have originated in 15th-century Italy, although it took several centuries for the device to develop. In 1657 the Englishmen Christopher Wren and Robert Boyle conducted experiments on syringe-like devices, while about 1720 the French physician Dominique Anel developed the modern pump syringe as a device to clean wounds using suction. Clinicians could not perform injections without an incision until Irish physician Francis Rynd invented the hollow needle in 1844. In 1853, wanting to inject iron perchloride coagulant into an aneurysm, Pravaz adapted Rynd's needle, rather than using the usual suction tube. Measuring 3 cm (1.18 in) long and 5 mm (0.2 in) in diameter, his syringe was entirely in silver, made by '' Établissements Charrière'', and operated by a screw (rather than t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Pravaz
Charles Gabriel Pravaz (24 March 1791 – 24 June 1853), a French orthopedic surgeon, pioneered the hypodermic syringe. While the concept dated to Galen, the modern syringe is thought to have originated in 15th-century Italy, although it took several centuries for the device to develop. In 1657 the Englishmen Christopher Wren and Robert Boyle conducted experiments on syringe-like devices, while about 1720 the French physician Dominique Anel developed the modern pump syringe as a device to clean wounds using suction. Clinicians could not perform injections without an incision until Irish physician Francis Rynd invented the hollow needle in 1844. In 1853, wanting to inject iron perchloride coagulant into an aneurysm, Pravaz adapted Rynd's needle, rather than using the usual suction tube. Measuring 3 cm (1.18 in) long and 5 mm (0.2 in) in diameter, his syringe was entirely in silver, made by '' Établissements Charrière'', and operated by a screw (rather than t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypodermic Needle
A hypodermic needle (from Greek ὑπο- (''hypo-'' = under), and δέρμα (''derma'' = skin)), one of a category of medical tools which enter the skin, called sharps, is a very thin, hollow tube with one sharp tip. It is commonly used with a syringe, a hand-operated device with a plunger, to inject substances into the body (e.g., saline solution, solutions containing various drugs or liquid medicines) or extract fluids from the body (e.g., blood). Large-bore hypodermic intervention is especially useful in catastrophic blood loss or treating shock. A hypodermic needle is used for rapid delivery of liquids, or when the injected substance cannot be ingested, either because it would not be absorbed (as with insulin), or because it would harm the liver. It is also useful to deliver certain medications that cannot be delivered orally due to vomiting. There are many possible routes for an injection, with intramuscular (into a muscle) and intravenous (into a vein) being ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Surgeons
French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with France ** French cuisine, cooking traditions and practices Fortnite French places Arts and media * The French (band), a British rock band * "French" (episode), a live-action episode of ''The Super Mario Bros. Super Show!'' * ''Française'' (film), 2008 * French Stewart (born 1964), American actor Other uses * French (surname), a surname (including a list of people with the name) * French (tunic), a particular type of military jacket or tunic used in the Russian Empire and Soviet Union * French's, an American brand of mustard condiment * French catheter scale, a unit of measurement of diameter * French Defence, a chess opening * French kiss, a type of kiss involving the tongue See also * France (other) * Franch, a surname * Fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varices
A varix (pl. varices) is an abnormally dilated vessel with a tortuous course. Varices usually occur in the venous system, but may also occur in arterial or lymphatic vessels. Examples of varices include: * Varicose veins, large tortuous veins usually found on legs * Sublingual varices * Esophageal varices, commonly stemming from cirrhosis of the liver, also known as oesophageal varicose * Gastric varices, commonly stemming from cirrhosis of the liver * Intestinal varices * Scrotal varices * Vulvar varices * Pelvic varices * Vesical varices, varicose veins associated with the urinary bladder * Rectal varices, which can be similar to external haemorrhoids See also * Varicose ulcer * Varix (mollusc) A varix () is an anatomical feature of the shell of certain sea snails, marine gastropod molluscs. Gastropods whose shells have varices are primarily families and species within the taxonomic groups Littorinimorpha and Neogastropoda. The va ... References {{Reflist Diseases ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varicose Veins
Varicose veins, also known as varicoses, are a medical condition in which superficial veins become enlarged and twisted. These veins typically develop in the legs, just under the skin. Varicose veins usually cause few symptoms. However, some individuals may experience fatigue or pain in the area. Complications can include bleeding or superficial thrombophlebitis. Varices in the scrotum are known as a varicocele, while those around the anus are known as hemorrhoids. Due to the various physical, social, and psychological effects of varicose veins, they can negatively affect one's quality of life. Varicose veins have no specific cause. Risk factors include obesity, lack of exercise, leg trauma, and family history of the condition. They also develop more commonly during pregnancy. Occasionally they result from chronic venous insufficiency. Underlying causes include weak or damaged valves in the veins. They are typically diagnosed by examination, including observation by ultr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerotherapy
Sclerotherapy (the word reflects the Greek ''skleros'', meaning ''hard'') is a procedure used to treat blood vessel malformations (vascular malformations) and also malformations of the lymphatic system. A medicine is injected into the vessels, which makes them shrink. It is used for children and young adults with vascular or lymphatic malformations. In adults, sclerotherapy is often used to treat spider veins, smaller varicose veins, hemorrhoids,William R. Finkelmeier, Sclerotherapy, Ch. 12, ACS Surgery: Principles & Practice, 2004, WebMD (hardcover book) and hydroceles.Darren T Beiko, Aspiration and Sclerotherapy versus hydrocelectomy for treatment of hydroceles, Urology Vol 61, Issue 4 (Apr 2003) Sclerotherapy is one method (along with surgery, radiofrequency, and laser ablation) for the treatment of spider veins, occasionally varicose veins, and venous malformations. In ultrasound-guided sclerotherapy, ultrasound is used to visualize the underlying vein so the physician can del ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jules Béhier
Louis-Jules Béhier (26 August 1813 in Paris – 7 May 1876 in Paris) was a French physician. In 1837 he received his doctorate at Paris with the dissertation-thesis "''Recherches sur quelques points de pathologie''". In 1844 he obtained his agrégation and in 1849 became ''médecin des hôpitaux''. In 1864 he attained the chair of internal pathology at the faculty of medicine in Paris. As a professor, he was associated with the Hôpital de la Charité (1864–67), Hôpital Pitié (1867–69) and the Hôtel-Dieu (1869–76). In 1866 he became a member of the Académie nationale de médecine (section for pathological anatomy). He is credited with the popularization of the hypodermic syringe in France, a device that had been invented in 1853. He is also known for his pioneer experimentation with the opiate narceine, and for his advocacy of hydrotherapy (cold water baths) and alcohol (a "Todd's mixture" containing brandy) for the treatment of typhoid fever. With dermatologist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Wood (physician)
Alexander Wood (10 December 181726 February 1884), was a Scotland, Scottish physician. He invented the first true hypodermic syringe. He served as President of the Royal College of Physicians of Edinburgh from 1858 to 1861. Life The son of Dr James Wood and his wife Mary Wood (James' cousin), Alexander was born on 10 December 1817 in Cupar, Fife. The family moved to Edinburgh around 1825, where they lived at 19 Royal Circus in the New Town, Edinburgh, Second New Town. He was educated at Edinburgh Academy from 1825 to 1832, and then studied Medicine at the University of Edinburgh (Doctor of Medicine, MD 1839). From qualification he worked at the Stockbridge Dispensary near his Edinburgh home. By 1840 he was working as a surgeon and living in his late father's house at 19 Royal Circus. From 1841 he lectured in Medicine at the Extra Mural School connected to Edinburgh University. In 1853, he invented the first hypodermic needle that used a true syringe and hollow needle. Wood ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aneurysm
An aneurysm is an outward bulging, likened to a bubble or balloon, caused by a localized, abnormal, weak spot on a blood vessel wall. Aneurysms may be a result of a hereditary condition or an acquired disease. Aneurysms can also be a nidus (starting point) for clot formation ( thrombosis) and embolization. As an aneurysm increases in size, the risk of rupture, which leads to uncontrolled bleeding, increases. Although they may occur in any blood vessel, particularly lethal examples include aneurysms of the Circle of Willis in the brain, aortic aneurysms affecting the thoracic aorta, and abdominal aortic aneurysms. Aneurysms can arise in the heart itself following a heart attack, including both ventricular and atrial septal aneurysms. There are congenital atrial septal aneurysms, a rare heart defect. Etymology The word is from Greek: ἀνεύρυσμα, aneurysma, "dilation", from ἀνευρύνειν, aneurynein, "to dilate". Classification Aneurysms are classified b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coagulation
Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood clot. It potentially results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair. The mechanism of coagulation involves activation, adhesion and aggregation of platelets, as well as deposition and maturation of fibrin. Coagulation begins almost instantly after an injury to the endothelium lining a blood vessel. Exposure of blood to the subendothelial space initiates two processes: changes in platelets, and the exposure of subendothelial tissue factor to plasma factor VII, which ultimately leads to cross-linked fibrin formation. Platelets immediately form a plug at the site of injury; this is called ''primary hemostasis. Secondary hemostasis'' occurs simultaneously: additional coagulation (clotting) factors beyond factor VII ( listed below) respond in a cascade to form fibrin strands, which strengthen the platelet plug. Disorders o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Rynd
Francis Rynd AM, MRCS, MRIA (1801–1861) was an Irish physician, known for inventing the hollow needle used in hypodermic syringes. Background Rynd was born in Dublin, Ireland, in 1801 to James Rynd and his third wife Hester Fleetwood, of Ryndville Castle, County Meath and Derryvolan, County Fermanagh, Ireland, respectively. Rynd attended medical school at Trinity College, Dublin, where he was reputed to be a "wayward" student, known for his busy social life and love of fox hunting. Career Rynd worked at the Meath Hospital in Dublin. At the Meath Hospital he trained under surgeon Sir Philip Crampton. Rynd became a member of the Royal College of Surgeons in 1830. In 1836 he took a surgical post in the Meath Hospital working alongside William Stokes and Robert James Graves. Dr Rynd, who had a lucrative private practice, also served as medical superintendent of the Mountjoy Prison. Rynd was a member of the exclusive Kildare Club in Dublin. Hypodermic needle In a 12 March 184 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
