Dec 4, '04. a cordis is a large-bore, usually single-lumen central line. it can be placed ij, subclavian, or femoral. it is also sometimes called an introducer, becuase it is frequently used as a pathway for a swan ganz (pa catheter) or transvenous pacer (the swan or pacer is floated through the cordis).
Best Answer: Why are they called 'magic markers'? The inventor Sidney Rosenthal named his new marking device Magic Marker because of its ability to mark on almost every surface. History of Pens & Writing Instruments. The first marker was probablythe felt tip marker, created in the 1940's. It was mainly used for labeling and artistic applications.
By Garland Pollard. Since the 1970s, the greatest magic marker for kids has been the Sanford Mr. Sketch. You know this one; its a set of a dozen or so markers, all water soluble, that smell like their colors. They are sold in sets of different sizes, including 4, 8, 12 and 16.