Concessional duty amendment on medical equipment updates eligible items, substituting and omitting specified implants under central excise rules. Amendment revises the list of medical equipment eligible for concessional central excise duty by substituting item (19) with 'Keratoprosthesis/orbital implants' and omitting items (139) and (142), thereby changing which medical devices qualify for the notification's concessional duty treatment under existing central excise authority.