I.S. EN ISO 10993-18:2020&LC:2020

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Characterization procedure
6 Chemical characterization parameters and methods
7 Reporting of the chemical characterization data
Annex A (informative) General principles of chemical characterization
Annex B (informative) Information sources for chemical characterization
Annex C (informative) Principles for establishing biological equivalence
Annex D (informative) Principles of sample extraction
Annex E (informative) Calculation and application of the analytical evaluation threshold (AET)
Annex F (informative) Qualification of analytical methods used for extractables/leachables
Annex G (informative) Reporting details for analytical methods and chemical data
Bibliography

This document specifies a framework for the identification, and if necessary, quantification of constituents of a medical device, allowing the identification of biological hazards and the estimation and control of biological risks from material constituents, using a generally stepwise approach to the chemical characterization which can include one or more of the following: — the identification of its materials of construction (medical device configuration); — the characterization of the materials of construction via the identification and quantification of their chemical constituents (material composition); — the characterization of the medical device for chemical substances that were introduced during manufacturing (e.g. mould release agents, process contaminants, sterilization residues); — the estimation (using laboratory extraction conditions) of the potential of the medical device, or its materials of construction, to release chemical substances under clinical use conditions (extractables); — the measurement of chemical substances released from a medical device under its clinical conditions of use (leachables).