Symbol Symbol Title Explanatory Text Standard/Law Reference Standard/Law Title Catalogue or model number Indicates the manufacturer's catalogue number ISO 15223-1, Clause 5.1.6 Medical devices - Symbols to be used with medical device labels, labelling and information to be supplied Unique Device Identifier Indicates a carrier that contains Unique Device Identifier information ISO 15223-1:2021, Clause 5.7.10 ISO 15223-1 Medical devices – Symbols to be used with medical device labels, labelling, and information to be supplied