Jan F. Esser Champion, winning the Dutch Championship in a play-off match for the title against Rudolf Loman in 1913. Jan F. Esser Johannes "Jan" Fredericus Samuel Esser (13 October 1877 in Leiden – 9 August 1946 in Chicago) was a Dutch plastic surgeon who pioneered innovative methods of reconstructive surgery on soldiers wounded in the First World War. He is thought to have coined the term "stent" in 1917 to describe his use of a dental impression compound invented in 1856 by the English dentist Charles Stent (1807–1885) to create a form for facial reconstruction. The term "stent" was later extended to
Ureteric stent is instilled into the urethra. Since no intravenous line is inserted and there is no anesthesia, you do not have to be accompanied by anyone else and you can eat normally before and after the procedure. A ureteric stent may also be retrieved without the use of a cystoscope by means of a magnetic removal system. The stent inserted has a small rare earth magnet attached to its bladder end which dangles freely within the bladder. When the stent needs to be removed a small catheter with a similar magnet is inserted into the bladder and the two magnets connect