Unverified90% confidenceDecision RuleTime unknown
医用级TENS需具备医疗器械注册证（中国为二类械字号，美国为FDA 510(k)清关）；仅有普通电子产品3C认证或标注'保健按摩'的产品不能宣称镇痛疗效，其电流参数常缺乏临床依据
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