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According to CDSCO guidelines, Electrically- powered trephine system falls under Risk Class B under Dermatological and Plastic surgery category of Medical Devices. Intended use - A rotary surgical device consisting of a motor (an engine) and a cylindrical or trephine insertion portion. The blade is beveled on one side. It is used for removal of the intervertebral disc, other hard soft tissues, or soft tissues.. This article will give you complete information about manufacturing Electrically- powered trephine system