DobbHoff feeding tube was invented in 1976 by 2 surgeons Dr. Robert Dobbie and Dr. Hoffmeister - and so named after them.
7 days
fredrick-miller tube
fredrick-miller tube
The dobhoff tube goes from nose to small intestine duodenum. The nasogastric (NG) tube goes from nose to stomach. More in-depth answer: A dobhoff tube is a small-bore feeding tube that runs from one of the nares to the stomach, then to the first part of the small intestine (duodenum). It can be advanced blindly 10 more cm to see if it can be threaded through the pyloric valve, but if it keeps coiling in the stomach, most doctors will order to place it the rest of the way under fluoroscopy. It can also be bridled in for extra security. This is mainly a feeding tube and can stay in for weeks to a few months. An NG tube is a large-bore tube that is used for many different reasons, including decompressing the stomach for surgery and to prevent nausea/vomiting. It is NOT used for tube feedings. Usually this tube does not stay in for very long. (This answer is based on my knowledge drawn from being a critical care RN.)
John Flamsteed invented the first test tube.
Lee De Forest invented the electron tube in 1906.
The cathode ray tube was invented in 1897 by Ferdinand Braun.
backs mackson
1946
The Crookes tube is a sealed glass tube that exhibits fluorescence in it after voltage is passed through the electrodes inside. It was invented in 1875 by Sir William Crookes.
In 1907 American inventor Lee De Forest invented the three-electrode vacuum tube
In 1907 American inventor Lee De Forest invented the three-electrode vacuum tube