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Anthony J. Adducci (August 14, 1937 – September 19, 2006) was a pioneer of the medical device industry in Minnesota. He is best known for co-founding Cardiac Pacemakers, Inc., the company that manufactured the world's first lithium battery-powered artificial pacemaker.
In 1957, Earl Bakken of Minneapolis, Minnesota, produced the first wearable external pacemaker for a pediatric patient of C. Walton Lillehei. The Swede Rune Elmqvist (1906-1996) developed the first internally implanted pacemaker in 1958. During this time, Reynolds Pombo had designed and built an external pacemaker powered by a 12-volt battery.
With the depletion of new numbers in area codes 312 and 773, an overlay of both of them, area code 872, was created in November 2009, beginning ten-digit dialing within the city limits of Chicago. The remaining area without an overlay in the northern part of Illinois, 708, eventually received such with area code 464 taking effect on January 21 ...
After successfully testing the hand-made device in the laboratory, Bakken returned to create a refined model for patients. However, much to his astonishment, when he came in the next day, he found the pacemaker already in use on a patient. (The Food and Drug Administration did not start regulating medical devices until 1976.) [4]
Development of the artificial cardiac pacemaker and cardiac defibrillator Paul Maurice Zoll (July 15, 1911 – January 5, 1999) [ 1 ] was a Jewish [ 2 ] American cardiologist and one of the pioneers in the development of the artificial cardiac pacemaker and cardiac defibrillator .
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
In 1951, the number of area codes grew to ninety: the State of New York gained area code 516 on Long Island, and Southern California received area code 714, to reduce the numbering plan area of Los Angeles. [23] Area code handbook issued by many telephone companies in 1962 to promote the newly introduced direct distance dialing.
Rune Elmqvist (1 December 1906 – 15 December 1996) was a Swedish physician turned engineer who developed the first implantable pacemaker in 1958, working under the direction of Åke Senning, senior physician and cardiac surgeon at the Karolinska University Hospital in Solna, Sweden.