每年更新FDA 要求： • 1) 注册和登记每年要更新一次（更新时间是：10月1号到12月31号 • 2) 要随时通知FDA注册和登记内容的变化。 – II 类产品，在进行设施登记和器械注册后，还需递交“上市前通知” 即510(K)申请。只有个别产品510(K) 豁免。
510(K)审查程序 FDA在收到企业递交的510(k)资料后，先检查资料是否，如资料，则受理并给企业发出确认性，同时给出申请受理编号(K YYXXXX)，此号码也将作为正式批准后的号码;如不，则要求企业在规定时间内补充，否则作企业放弃处理。FDA在受理申请后即进入内部工作程序，其中可能还会要求企业补充一些资料。在510(k)申请通过审阅后，FDA并不立即发出批准函件，而是根据产品风险等级、市场先前是否对企业有不良反 映等确定是否对企业进行现场GMP考核，考核通过后再发给企业正式批准函件(Clearance);如无须现场考核GMP，则510(k)申请通过后立即发给正式批准函件。
FDA对于美国代理人的解释也可以参考看一下网站的原文： Any foreign establishment engaged in the manufacture, preparation, propagation, compounding, or processing of a device imported into the United States must identify a United States agent (U.S. agent) for that establishment. Information about a foreign establishment’s U.S. Agent is submitted electronically using the FDA Unified Registration and Listing System (FURLS system) and is part of the establishment registration process. Each foreign establishment may designate only one U.S. agent. The foreign establishment may also, but is not required to, designate its U.S. agent as its official correspondent. The foreign establishment should provide the name, address, telephone and fax numbers, and e-mail address of the U.S. agent. The U.S. agent identified will be required to complete an automated process to confirm that they have agreed to act as the U.S. agent. The automated process will forward an email verification request to the U.S. agent. They will be re to confirm her/his consent to act as a representative/liaison on behalf of the foreign establishment. If the U.S. agent denies consent (or does not respond within 10 business days), the Official Correspondent/Owner Operator of the foreign establishment will be notified and must designate a new U.S. agent to satisfy the regulatory obligation.
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