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GB 4806.8-2022: National food safety standard - Food Contact Paper and Board Materials and Their Products Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 4806.8: Historical versions
Similar standardsGB 4806.8-2022: National food safety standard - Food Contact Paper and Board Materials and Their Products---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB4806.8-2022 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 11.100.20 CCS C 30 GB/T 16886.16-2021 / ISO 10993-16.2017 Replacing GB/T 16886.16-2013 Biological Evaluation of Medical Devices – Part 16. Toxicokinetic Study Design for Degradation Products and Leachables (ISO 10993-16.2017, IDT) Issued on. NOVEMBER 26, 2021 Implemented on. DECEMBER 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 Introduction... 6 1 Scope... 9 2 Normative References... 9 3 Terms and Definitions... 9 4 Principles for Design of Toxicokinetic Studies... 11 5 Guidance on Test Methods... 12 5.1 General considerations... 12 5.2 Guidance on specific types of test... 14 5.2.1 General... 14 5.2.2 Absorption... 14 5.2.3 Distribution... 14 5.2.4 Metabolism and excretion... 15 Annex A (Normative) Circumstances in which Toxicokinetic Studies shall be Considered... 17 Bibliography... 19ForewordThis Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. This Document is the Part 16 of GB/T 16886 Biological Evaluation of Medical Devices. GB/T 16886 has issued the following parts. --- Part 1.Evaluation and Testing within a Risk Management Process; --- Part 2.Animal Welfare Requirements; --- Part 3.Tests for Genotoxicity, Carcinogenicity and Reproductive Toxicity; --- Part 4.Selection for Tests for Interactions with Blood; --- Part 5.Tests for Cytotoxicity. in Vitro Methods; --- Part 6.Tests for Local Effects after Implantation; --- Part 7.Ethylene Oxide Sterilization Residuals; --- Part 9.Framework for Identification and Quantification of Potential Degradation Products; --- Part 10.Tests for Irritation and Skin Sensitization; --- Part 11.Tests for Systemic Toxicity; --- Part 12.Sample Preparation and Reference Materials; --- Part 13.Identification and Quantification of Degradation Products from Polymeric Medical Devices; --- Part 14.Identification and Quantification of Degradation Products from Ceramics; --- Part 15.Identification and Quantification of Degradation Products from Metals and Alloys; --- Part 16.Toxicokinetic Study Design for Degradation products and Leachables; --- Part 17.Establishment of Allowable Limits for Leachable Substances; --- Part 18.Chemical Characterization of Materials; --- Part 19.Physico-Chemical, Morphological and Topographical Characterization of Materials; --- Part 20.Principles and Methods for Immunotoxicology Testing of Medical Devices. This Document replaced GB/T 16886.16-2013 Biological Evaluation of Medical Devices - Part 16.Toxicokinetic Study Design for Degradation Products and Leachables. Compared with GB/T 16886.16-2013, the major technical changes of this Document are as follows besides the editorial modifications. --- Modify the definition of term “Absorption” (see 3.1 of this Edition; 3.1 of 2013 Edition); --- Modify "Principles for design of toxicokinetic studies" (see Clause 4 of this Edition; Clause 4 of 2013 Edition); --- Modify the "Guidance on test methods" (see Clause 5 of this Edition; Clause 5 of 2013 Edition); --- Add information on toxicokinetic studies of nanomaterials (see A.4 of this Edition); --- Modify the circumstances that shall be considered in toxicokinetic studies (see A.4 of this Edition; A.4 of 2013 Edition). This Document used translation method to equivalently adopt ISO 10993-16.2017 Biological Evaluation of Medical Devices – Part 16.Toxicokinetic Study Design for Degradation Products and Leachables. The Chinese document that has a consistent correspondence with the international documents normatively cited in this document is as follows. --- GB/T 16886.1-2011 Biological Evaluation of Medical Devices - Part 1.Evaluation and Testing within a Risk Management Process (ISO 10993-1.2009, IDT). Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by National Medical Products Administration. This Document shall be under the jurisdiction of National Technical Committee on Biological Evaluation on Medical Device of Standardization Administration of China (SAC/TC 248). Drafting organizations of this Document. Shandong Quality Inspection Center for Medical Device; and Shandong University. Chief drafting staffs of this Document. Fan Chunguang, Liu Chenghu, Hou Li, Zhang Na, Liu Xiangdong, and Dong Xiuli. The historical editions replaced by this Document are as follows. --- GB/T 16886.16-2003 was first-time published in 2003; first-time revised in 2013; --- It is the second-time revised hereby.1 ScopeThis Document provides principles on designing and performing toxicokinetic studies relevant to medical devices. Annex A describes the considerations for inclusion of toxicokinetic studies in the biological evaluation of medical devices.2 Normative ReferencesThe provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. ISO 10993-1 Biological Evaluation of Medical Devices – Part 1.Evaluation and Testing within a Risk Management Process3 Terms and DefinitionsFor the purposes of this Document, the terms and definitions given in ISO 10993-1 and the following apply. Process by which a biomaterial is degraded in the physiological environment and the product(s) eliminated and/or absorbed. Time for the concentration of a specified substance to decrease to 50 % of its initial value in the same body fluid or tissue.4 Principles for Design of Toxicokinetic StudiesFor analytical methods, other parts of ISO 10993 shall be used as relevant. The methods shall be fully described in the study report (see 5.1.10). Quantitative analytical methods shall be specific, sensitive and reproducible (see ISO 10993-18). Limit of detection/quantification shall be defined and justified.5 Guidance on Test MethodsAbsorption depends on the route of administration, the physicochemical form of the test substance and the vehicle. It can be estimated from blood, serum, excreta and tissue concentrations. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
