ISO 10993-9-2019 PDF

Full title and description

Biological evaluation of medical devices — Part 9: Framework for identification and quantification of potential degradation products. This part of ISO 10993 gives a structured framework for planning, performing and reporting in vitro studies to identify and quantify chemical degradation products from medical device materials, to inform the biological evaluation of the device.

Abstract

ISO 10993-9:2019 provides general principles for the systematic evaluation of potential and observed degradation of medical devices through the design and performance of in vitro degradation studies. It applies to materials intended to degrade in the body (resorbable) and materials not intended to degrade, and helps identify and quantify chemical degradation products that may be relevant for biocompatibility assessment. The document excludes purely mechanical wear (particulate debris), leachables that are not degradation products, and devices/components that do not contact the patient directly or indirectly.

General information

• Status: Published
• Publication date: 26 November 2019
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 11.100.20
• Edition / version: 3rd edition (ISO 10993-9:2019)
• Number of pages: 11

Core bibliographic and lifecycle details (status, date, edition, pages and ICS) are recorded in the ISO catalogue entry for ISO 10993-9:2019 and in standards distributors' metadata.

Scope

The standard establishes a framework for identification and quantification of potential chemical degradation products arising from medical device materials under relevant in vitro conditions that simulate clinical use. It is intended to support the biological evaluation of devices by informing which degradation products should be considered for toxicological assessment. Exclusions explicitly include degradation resulting solely from mechanical wear (particulate debris), leachable components that are not degradation products, and devices or components that do not contact the patient (directly or indirectly).

Key topics and requirements

• Preliminary assessment and justification for whether degradation testing is needed (literature, material chemistry, clinical experience).
• Study planning: documented study plan specifying objectives, methods, simulated environments, sampling time points and acceptance criteria.
• Selection and justification of in vitro models and conditions to simulate relevant clinical service environments.
• Analytical approaches for identification and quantification of degradation products (chemical characterization, analytical sensitivity and specificity).
• Data interpretation and reporting to support biological evaluation and toxicological risk assessment.
• Applicability to both resorbable (intended-to-degrade) and non-resorbable materials.
• Clear exclusion of purely mechanical particulate wear and non-degradation leachables from the scope of the document.

These topics reflect the standard's emphasis on study design, appropriate simulation of use, analytical characterization and communication of findings for downstream biocompatibility assessment.

Typical use and users

Used by medical device manufacturers (R&D and regulatory affairs), biocompatibility specialists, analytical and materials testing laboratories, contract testing organizations, and regulatory reviewers to design degradation studies, identify/quantify degradation products, and support the chemical and toxicological evaluation components of an overall biological evaluation. The guidance is applied during product development, preclinical testing and regulatory submissions.

Related standards

ISO 10993-9 is part of the ISO 10993 series on biological evaluation of medical devices. Closely related parts and standards commonly used alongside Part 9 include ISO 10993-1 (evaluation and testing within a risk management process), ISO 10993-12 (sample preparation and reference materials), ISO 10993-18 (chemical characterization of materials), ISO 10993-17 (toxicological risk assessment), and other test-specific parts such as ISO 10993-3, -4, -5, -6 and -7. Users should consult the relevant parts of ISO 10993 for test selection and for linking chemical characterization and degradation findings to biological endpoints.

Keywords

degradation products; biodegradation; in vitro degradation studies; chemical characterization; leachables; biocompatibility; medical device materials; resorbable materials; non-resorbable materials; identification; quantification; analytical methods.

FAQ

Q: What is this standard?

A: ISO 10993-9:2019 is Part 9 of the ISO 10993 series and provides a framework for identification and quantification of potential chemical degradation products from medical device materials to support biological evaluation.

Q: What does it cover?

A: It covers principles for planning and performing in vitro degradation studies, selection of simulated conditions, approaches to identify and quantify chemical degradation products, and reporting to inform toxicological evaluation. It applies to materials intended to degrade and those not intended to degrade, but excludes purely mechanical wear debris and non-degradation leachables.

Q: Who typically uses it?

A: Medical device manufacturers, analytical and biocompatibility testing labs, material scientists, regulatory affairs professionals and toxicologists use this guidance when designing degradation studies and when integrating chemical-data into biological evaluations.

Q: Is it current or superseded?

A: ISO 10993-9:2019 is the current published edition (3rd edition) that replaced earlier editions (including the 2009 edition). ISO standards are subject to periodic review (typically every five years) and may be confirmed, revised or withdrawn at review; consult the ISO catalogue for the latest status.

Q: Is it part of a series?

A: Yes. It is one part of the ISO 10993 series on biological evaluation of medical devices; the series provides complementary guidance on test selection, chemical characterization, toxicological risk assessment and specific biological tests.

Q: What are the key keywords?

A: Degradation products, in vitro degradation, chemical characterization, leachables, biocompatibility, resorbable materials, test planning, analytical quantification.