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Catheter for hemodialysis Central venous catheter for temporary access in hemodialysis. A dialysis catheter is a catheter used for exchanging blood to and from a hemodialysis machine and a patient. The dialysis catheter contains two lumens: venous and arterial. Although both lumens are in the vein, the "arterial" lumen, like natural arteries ...
Donald Pearce Shiley (January 19, 1920 – July 31, 2010) was the inventor of the Bjork–Shiley valve, a prosthetic heart valve. He was a 1951 alumnus of the University of Portland , where he studied engineering.
Björk–Shiley valve, as depicted in patent #US003824629. The Björk–Shiley valve is a mechanical artificial heart valve. The valve was co-invented by American engineer Donald Shiley and Swedish heart surgeon Viking Björk. Beginning in 1971, it has been used to replace aortic valves and mitral valves. It was the first successful tilting ...
Shiley may refer to: Bjork–Shiley valve, mechanical heart valve prosthesis; Donald Shiley, one of the co-inventors of Pfizer's Bjork-Shiley heart valve;
Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [2] For example, a catheter with a French size of 9 would have an outer diameter of approximately 3 mm. While the French scale aligns closely with the metric system, it introduces redundancy and the potential for rounding errors.
A tracheal tube is a catheter that is inserted into the trachea for the primary purpose of establishing and maintaining a patent airway and to ensure the adequate exchange of oxygen and carbon dioxide. Many different types of tracheal tubes are available, suited for different specific applications: