Changes

*The clinical trials of new medical devices of Class II and Class III can be conducted only after clinical trial approval by the relevant authority in accordance with the rules of the drug regulatory authority under State Council. '''Currently''' Boston scientific is conducting clinical '''trials''' for '''Truimph Ureteral stent''' which is a ureteral '''stent''' loaded with '''Triclosan''' (used as an antimicrobial agent).The trials are currently in '''Phase II''' in '''canada'''(NCT00250406).  *Other trials are related to comparison of various ureteral stent of different companies in terms of patient comfort and materials used in the stent.*The result of trials is that there is '''not much differenc'''e among the ureteral stents of different companies in terms of '''patient comfort''' and '''materials''' used in the stent