We last wrote about the U.S. FDA eSTAR when it became compulsory for 510(k)s. At the time, the eSTAR was voluntary for De Novos. Background on De NovosThe De Novo Classification Request “De Novo” is the regulatory mechanism used when manufacturers have a novel medical device that they expect is not high risk and so should be Class II (special controls and general controls) or Class I (general co..