Abstract

This document gives guidance on designating medical devices to cleaning classification categories, attributes used for medical device cleaning classification category, and designation of a cleaning process.
The cleaning classification category is comprised of two parts:
designate medical devices to a product family;
designate product families to cleaning processes.
NOTE 1        This allows grouping of medical devices into cleaning classification categories during cleaning and identification of master products during cleaning validation.
This document is applicable to manufacturers devising cleaning methods and instructions for processing. It also applies to any processing facility where medical devices are cleaned.
This document does not cover processing of single-use medical devices provided as sterile before use and textile devices.
NOTE 2        Manual cleaning steps before automated cleaning do not include steps that are considered point of use treatment that can be specified.
NOTE 3        Microbiocidal processes (sanitization, disinfection, sterilization) are not in the scope of the medical device cleaning classification categories.

Status
Published
Public Enquiry End Date
29-Apr-2026
Publication Date
21-Jul-2026
Technical Committee
VAZ - Healthcare
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Jul-2026
Due Date
21-Sep-2026
Completion Date
22-Jul-2026

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SIST-TS CEN ISO/TS 17664-3:2026

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SIST-TS CEN ISO/TS 17664-3:2026 is the Slovenian adoption of CEN ISO/TS 17664-3:2026, a technical specification published by SIST for reusable medical devices. It gives guidance on assigning reusable medical devices to cleaning classification categories and on designating a cleaning process for those categories. The document is intended for manufacturers and for processing facilities that clean medical devices and need to organize cleaning instructions, validation, and workflow decisions.

What does SIST-TS CEN ISO/TS 17664-3:2026 specify?

SIST-TS CEN ISO/TS 17664-3:2026 specifies how to group reusable medical devices for cleaning purposes and how to link those groups to cleaning processes. It focuses on product families, cleaning classification categories, and the attributes that matter when deciding whether a device can be cleaned manually or automatically.

The scope covers manufacturers creating cleaning methods and instructions for processing, and it also applies to any facility that cleans medical devices. It excludes single-use medical devices supplied sterile before use and textile devices. The document also keeps microbiocidal processes such as sanitization, disinfection, and sterilization outside the cleaning classification categories.

The document is organized into these main clauses and one informative annex:

PartWhat it covers
Clause 1Scope
Clause 2Normative references
Clause 3Terms and definitions
Clause 4Risk analysis
Clause 5Product families
Clause 6Cleaning classification categories
Clause 7Application of cleaning classification category
Clause 8Processing resources for categories and families of medical devices
Annex AGuidance on product families

What are the key requirements of SIST-TS CEN ISO/TS 17664-3:2026?

SIST-TS CEN ISO/TS 17664-3:2026 is mainly about how to justify cleaning groupings and how to use them in practice. The document links device design, contamination risk, and cleaning resources so that manufacturers and processing facilities can choose methods that are realistic for the device family.

Risk analysis and responsibility

Clause 4 says the medical device manufacturer should undertake risk analysis in line with ISO 17664-1 or ISO 17664-2, as applicable. If a processing facility uses an alternative cleaning method that the manufacturer did not specify, the facility should carry out its own risk analysis. In practice, this means the cleaning decision must be supported by evidence, not by assumption.

Product families

Clause 5 says product families are based on four primary attributes: geometric design features, materials of construction, clinical use, and type of cleaning process. Devices with similar cleaning behavior may be grouped together, and more than one product family may sit in the same cleaning classification category. Practically, this helps a manufacturer write one cleaning approach for a set of devices that really behave alike.

Clause 5 also says the most difficult-to-clean locations should be identified using the device’s geometry, surface area, surface character, and size. It highlights access for brushes and fluids, disassembly, and removal of soil and cleaning agent. That matters because the cleaning instructions must address the hardest-to-clean part, not just the easiest surfaces.

Materials and clinical use also matter. Clause 5 says cleaning-agent compatibility, material degradation, and effects of repeated processing should be considered, and that the soil profile should be representative of actual clinical use. Delayed processing and transport conditions should also be considered. In practice, a device may need a different classification if its material or intended use changes how soil behaves.

Cleaning classification categories

Clause 6 divides cleaning into manual and automated categories and allows a device to qualify for more than one category. Manual categories are M1, M2, and M3. Automated categories are A1, A2, and A3.

  • M1 and A1 are for devices whose surfaces are directly accessible.
  • M2 and A2 are for devices with inaccessible areas but without specialized equipment.
  • M3 and A3 are for devices with inaccessible areas that need specialized equipment, specialized accessories, customized steps, or customized cycle parameters.

For practice, these categories tell a processing team how much access, tooling, and setup the device needs. A higher category usually means more training, more equipment, and more process control.

Clause 6 also notes that cleaning classification does not fully cover material compatibility, so end-of-life indicators and precautions still need attention. That matters when repeated cleaning can damage a device even if the cleaning works.

Applying the category

Clause 7 says processing facilities can use the cleaning classification category to identify the cleaning process, while product families help define master products and validate cleaning. If a facility departs from the manufacturer’s validated instructions, it should validate the alternative process with suitable equipment, materials, and trained staff. In practice, the classification is a planning tool for validation and workflow, not just a label.

Clause 7 also links category to cleaning risk mitigation. The document says categories can be used to communicate cleaning effort, support process validation and verification testing, and define the equipment and cleaning techniques needed in the instructions for use (IFU). For M3 and A3 devices, that can include specialized equipment, training, verification, and enhanced visualization.

Processing resources

Clause 8 explains that resource needs rise as device complexity and access problems increase. M1 and A1 devices are the easiest to process because all surfaces are readily accessible. M2 and A2 devices need more effort and often common tools, connectors, washer-disinfectors, or sonicators. M3 and A3 devices require the most resources, including specialized equipment, ongoing staff training, and verification of cleaning effectiveness. That helps facilities match staffing, equipment, and monitoring to the device mix they handle.

What terms does SIST-TS CEN ISO/TS 17664-3:2026 define?

SIST-TS CEN ISO/TS 17664-3:2026 defines the vocabulary needed to discuss cleaning design and cleaning validation.

  • Cleaning - removal of contaminants enough for further processing or intended use.
  • Cleaning agent - a physical or chemical substance, or combination of substances, that makes an item clean.
  • Cleaning classification category - a grouping system in which the same cleaning processes, equipment, and accessories are considered suitable.
  • Instructions for use (IFU) - the user-facing part of the accompanying information needed for safe and effective use.
  • Master product - the product or procedure set that represents the most difficult item to clean in a product family or processing category.
  • Product family - a group of products with similar attributes that are treated as equivalent for evaluation and processing.
  • Reusable medical device - a medical device intended by the manufacturer to be processed and used again.
  • Validation - confirmation, using objective evidence, that requirements for a specific intended use have been met.
  • Verification - confirmation, using objective evidence, that specified requirements have been met.

Who uses SIST-TS CEN ISO/TS 17664-3:2026?

SIST-TS CEN ISO/TS 17664-3:2026 is used by medical device manufacturers, processing facilities, and teams that design or validate cleaning workflows. It is relevant to sterile processing departments, contract reprocessors, quality and regulatory teams, and validation specialists working with reusable medical devices.

In practice, these users apply the document when writing IFU cleaning instructions, grouping devices into product families, choosing manual or automated cleaning routes, selecting washer-disinfector setups, validating alternative processes, and deciding what training or specialized equipment is needed.

Which standards are used with SIST-TS CEN ISO/TS 17664-3:2026?

SIST-TS CEN ISO/TS 17664-3:2026 refers to several related standards that support its terminology and process decisions.

  • ISO 11139 - provides the underlying vocabulary for cleaning, validation, verification, and related processing terms.
  • ISO 17664-1 - covers manufacturer information for critical and semi-critical medical devices and is part of the framework this document extends.
  • ISO 17664-2 - covers manufacturer information for non-critical medical devices and is also used as a basis for risk analysis.
  • ISO 15883-5 - gives cleaning requirements and acceptance criteria for washer-disinfectors, which matters for automated cleaning.
  • ISO 17665 - is mentioned as a comparison point for designation to product family or master product in moist heat sterilization.
  • ASTM F3357 - is cited for examples of design features that affect cleanability.

What does the SIST-TS CEN ISO/TS 17664-3:2026 document contain?

SIST-TS CEN ISO/TS 17664-3:2026 contains the vocabulary, grouping logic, category definitions, and implementation guidance needed to classify reusable medical devices for cleaning. It also gives guidance on risk analysis, product-family assignment, and the resources needed for different cleaning categories.

Annex A adds practical guidance on product families. It includes examples of geometric design features that create cleaning challenges, guidance on materials of construction, and evaluation questions that help a manufacturer or processing facility judge how a device should be classified and processed.

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Effective Date
28-Jan-2026

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Frequently Asked Questions

SIST-TS CEN ISO/TS 17664-3:2026 is a technical specification published by the Slovenian Institute for Standardization (SIST). Its full title is "Processing of health care products - Information to be provided by the medical device manufacturer for the processing of medical devices - Part 3: Guidance on the designation of a reusable medical device to a cleaning classification (ISO/TS 17664-3:2026)". This standard covers: This document gives guidance on designating medical devices to cleaning classification categories, attributes used for medical device cleaning classification category, and designation of a cleaning process. The cleaning classification category is comprised of two parts: designate medical devices to a product family; designate product families to cleaning processes. NOTE 1        This allows grouping of medical devices into cleaning classification categories during cleaning and identification of master products during cleaning validation. This document is applicable to manufacturers devising cleaning methods and instructions for processing. It also applies to any processing facility where medical devices are cleaned. This document does not cover processing of single-use medical devices provided as sterile before use and textile devices. NOTE 2        Manual cleaning steps before automated cleaning do not include steps that are considered point of use treatment that can be specified. NOTE 3        Microbiocidal processes (sanitization, disinfection, sterilization) are not in the scope of the medical device cleaning classification categories.

This document gives guidance on designating medical devices to cleaning classification categories, attributes used for medical device cleaning classification category, and designation of a cleaning process. The cleaning classification category is comprised of two parts: designate medical devices to a product family; designate product families to cleaning processes. NOTE 1        This allows grouping of medical devices into cleaning classification categories during cleaning and identification of master products during cleaning validation. This document is applicable to manufacturers devising cleaning methods and instructions for processing. It also applies to any processing facility where medical devices are cleaned. This document does not cover processing of single-use medical devices provided as sterile before use and textile devices. NOTE 2        Manual cleaning steps before automated cleaning do not include steps that are considered point of use treatment that can be specified. NOTE 3        Microbiocidal processes (sanitization, disinfection, sterilization) are not in the scope of the medical device cleaning classification categories.

SIST-TS CEN ISO/TS 17664-3:2026 is classified under the following ICS (International Classification for Standards) categories: 11.040.01 - Medical equipment in general; 11.080.01 - Sterilization and disinfection in general. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST-TS CEN ISO/TS 17664-3:2026 has the following relationships with other standards: It is inter standard links to SIST EN ISO 11638:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST-TS CEN ISO/TS 17664-3:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-september-2026
Proizvodnja izdelkov za zdravstveno nego - Informacije za obdelavo medicinskih
pripomočkov, ki jih zagotovi proizvajalec - 3. del: Navodilo za določitev razreda
čiščenja ponovno uporabnih medicinskih pripomočkov (ISO/TS 17664-3:2026)
Processing of health care products - Information to be provided by the medical device
manufacturer for the processing of medical devices - Part 3: Guidance on the
designation of a reusable medical device to a cleaning classification (ISO/TS 17664-
3:2026)
Aufbereitung von Produkten für die Gesundheitsfürsorge - Vom Medizinprodukt-
Hersteller bereitzustellende Informationen für die Aufbereitung von Medizinprodukten -
Teil 3: Leitfaden für die Einstufung eines wiederverwendbaren Medizinprodukts in eine
quantitative Reinigungsklasse (ISO/TS 17664-3:2026)
Traitement de produits de soins de santé - Informations relatives au traitement des
dispositifs médicaux à fournir par le fabricant du dispositif - Partie 3: Recommandations
sur la désignation d'un dispositif médical réutilisable dans une classification de nettoyage
(ISO/TS 17664-3:2026)
Ta slovenski standard je istoveten z: CEN ISO/TS 17664-3:2026
ICS:
11.040.01 Medicinska oprema na Medical equipment in general
splošno
11.080.01 Sterilizacija in dezinfekcija na Sterilization and disinfection
splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN ISO/TS 17664-3
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
July 2026
TECHNISCHE SPEZIFIKATION
ICS 11.080.01
English Version
Processing of health care products - Information to be
provided by the medical device manufacturer for the
processing of medical devices - Part 3: Guidance on the
designation of a reusable medical device to a cleaning
classification (ISO/TS 17664-3:2026)
Traitement de produits de soins de santé - Aufbereitung von Produkten für die
Informations relatives au traitement des dispositifs Gesundheitsfürsorge - Vom Medizinprodukt-Hersteller
médicaux à fournir par le fabricant du dispositif - bereitzustellende Informationen für die Aufbereitung
Partie 3: Recommandations sur la désignation d'un von Medizinprodukten - Teil 3: Leitfaden für die
dispositif médical réutilisable dans une classification Einstufung eines wiederverwendbaren
de nettoyage (ISO/TS 17664-3:2026) Medizinprodukts in eine quantitative Reinigungsklasse
(ISO/TS 17664-3:2026)
This Technical Specification (CEN/TS) was approved by CEN on 6 June 2026 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 17664-3:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (CEN ISO/TS 17664-3:2026) has been prepared by Technical Committee ISO/TC 198
"Sterilization of health care products" in collaboration with Technical Committee CEN/TC 204
“Sterilization of medical devices” the secretariat of which is held by BSI.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO/TS 17664-3:2026 has been approved by CEN as CEN ISO/TS 17664-3:2026 without any
modification.
Technical
Specification
ISO/TS 17664-3
First edition
Processing of health care
2026-06
products — Information to be
provided by the medical device
manufacturer for the processing of
medical devices —
Part 3:
Guidance on the designation of
a reusable medical device to a
cleaning classification
Traitement de produits de soins de santé — Informations
relatives au traitement des dispositifs médicaux à fournir par le
fabricant du dispositif —
Partie 3: Recommandations sur la désignation d'un dispositif
médical réutilisable dans une classification de nettoyage
Reference number
ISO/TS 17664-3:2026(en) © ISO 2026

ISO/TS 17664-3:2026(en)
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO/TS 17664-3:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Risk analysis . 4
5 Product families . 4
5.1 General .4
5.2 Geometric design features .5
5.3 Materials of construction .5
5.4 Clinical use .5
5.5 Type of cleaning process .5
6 Cleaning classification categories . 5
6.1 General .5
6.2 Manual cleaning . .6
6.2.1 Category M1 medical devices .6
6.2.2 Category M2 medical devices.6
6.2.3 Category M3 medical devices.6
6.3 Automated cleaning .6
6.3.1 Category A1 medical devices .6
6.3.2 Category A2 medical devices.6
6.3.3 Category A3 medical devices.6
7 Application of cleaning classification category . 6
7.1 General .6
7.2 Medical device complexity .7
7.3 Cleaning risk mitigation .7
8 Processing resources for categories and families of medical devices. 7
8.1 General .7
8.2 Category M1 and A1 medical devices .7
8.3 Category M2 and A2 medical devices.7
8.4 Category M3 and A3 medical devices .7
Annex A (informative) Guidance on product families . 9
Bibliography .12

iii
ISO/TS 17664-3:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO’s adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 198, Sterilization of health care products, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 204,
Sterilization of medical devices, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
A list of all parts in the ISO 17664 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
ISO/TS 17664-3:2026(en)
Introduction
ISO 17664-1 and ISO 17664-2 address the medical device manufacturer’s labelling requirements. Typically,
these requirements are mandated by law or government regulation to be validated to demonstrate effective
processes. This document is intended to bridge the gap between the manufacturer of reusable medical
devices and the facility responsible for medical device processing.
ISO 17664-1 and ISO 17664-2 specify requirements for the information to be provided by the medical device
manufacturer for processing. ISO 17665 gives specificity for designation to a product family or master
product, but this is for moist heat sterilization and not for cleaning.
Product family and master product are used within a number of documents (i.e. ISO 17664-1 and ISO 17664-2,
AAMI TIR12 and ANSI/AAMI ST98). These documents use the terminology, but do not provide guidance to
inform the medical device manufacturer as to how to define product family or designate the master product
using objective evidence.
The connection between the medical device manufacturer and the processing facility is intended to be
communicated through the instructions for use (IFU). In addition to providing guidance to the manufacturer,
this document provides the guidance to the processing facility to establish cleaning workflows based on
medical device cleaning classification category within the clinical setting. This allows verification that the
cleaning instructions can be performed effectively for all reusable medical devices.
As the variability in design features for reusable medical devices continues to increase, guidance is needed
to establish appropriate medical device cleaning classification.

v
Technical Specification ISO/TS 17664-3:2026(en)
Processing of health care products — Information to be
provided by the medical device manufacturer for the
processing of medical devices —
Part 3:
Guidance on the designation of a reusable medical device to a
cleaning classification
1 Scope
This document gives guidance on designating medical devices to cleaning classification categories, attributes
used for medical device cleaning classification category, and designation of a cleaning process.
The cleaning classification category is comprised of two parts:
a) designate medical devices to a product family;
b) designate product families to cleaning processes.
NOTE 1 This allows grouping of medical devices into cleaning classification categories during cleaning and
identification of master products during cleaning validation.
This document is applicable to manufacturers devising cleaning methods and instructions for processing. It
also applies to any processing facility where medical devices are cleaned.
This document does not cover processing of single-use medical devices provided as sterile before use and
textile devices.
NOTE 2 Manual cleaning steps before automated cleaning do not include steps that are considered point of use
treatment that can be specified.
NOTE 3 Microbiocidal processes (sanitization, disinfection, sterilization) are not in the scope of the medical device
cleaning classification categories.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/

ISO/TS 17664-3:2026(en)
3.1
cleaning
removal of contaminants to the extent necessary for further processing (3.10) or for intended use
Note 1 to entry: Cleaning consists of the removal of adherent soil (3.13) (e.g. blood, protein substances and other
debris) from the surfaces, crevices, serrations, joints and lumens of a medical device (3.8) by a manual or automated
process that prepares the items for safe handling, further processing, or both.
[SOURCE: ISO 11139:2018, 3.46, modified — Note 1 to entry has been added.]
3.2
cleaning agent
physical or chemical entity, or combination of entities, having activity to render an item clean
[SOURCE: ISO 11139:2018, 3.47]
3.3
cleaning classification category
grouping system of the included medical devices (3.8) wherein cleaning (3.1) processes, equipment and
accessories are considered suitable
Note 1 to entry: Different product families can be combined in the same cleaning classification category.
Note 2 to entry: Cleaning processes include washer-disinfector, equipment and accessories, etc.
3.4
clinical use
use of a health care product during a procedure on a patient
[SOURCE: ISO 11139:2018, 3.49]
3.5
instructions for use
IFU
portion of the accompanying information that is essential for the safe and effective intended use of a medical
device (3.8) or accessory directed to the user of the medical device
Note 1 to entry: The instructions for use, or portions thereof, can be located on the display of a medical device or its
accessory.
[SOURCE: ISO 11139:2018/Amd 1:2024, 3.342]
3.6
manual cleaning
removal of contaminants from an item to the extent necessary for further processing (3.10) or for intended
use without the use of an automated process
[SOURCE: ISO 11139:2018, 3.159]
3.7
master product
health care product or procedure set used to represent the most difficult to clean item in a product family
(3.11) or processing (3.10) category
[SOURCE: ISO 11139:2018, 3.160, modified — The term “clean” has replaced “sterilize”.]
3.8
medical device
instrument, apparatus, implement, machine, appliance, implant, reagent for in vitro use, or software
material, or other similar related article, intended by the manufacturer to be used, alone or in combination,
for human beings for one or more of the specific medical purpose(s) of:
— diagnosis, prevention, monitoring, treatment, or alleviation of disease;

ISO/TS 17664-3:2026(en)
— diagnosis, monitoring, treatment, alleviation of, or compensation for an injury;
— investigation, replacement, modification, or support of the anatomy, or of a physiological process;
— supporting or sustaining life;
— control of conception;
— disinfection of medical devices;
— providing information by means of in vitro examination of specimens derived from the human body;
and which does not achieve its primary intended action by pharmacological, immunological or metabolic
means, in or on the human body, but which may be assisted in its intended function by such means
Note 1 to entry: Products which may be considered to be medical devices in some jurisdictions but not in others
include:
— items specifically intended for cleaning or sterilization of medical devices;
— pouches, reel goods, sterilization wrap and reusable containers for packaging of medical devices for sterilization;
— disinfection substances;
— aids for persons with disabilities;
— medical devices incorporating animal tissues and/or human tissues;
— medical devices for in vitro fertilization or assisted reproduction technologies.
[SOURCE: ISO 11139:2018/Amd 1:2024, 3.166]
3.9
medical device manufacturer
natural or legal person with responsibility for design or manufacture, or both, of a medical device (3.8) with
the intention of making the medical device available for use, under their name, whether or not such a medical
device is designed or manufactured, or both, by that person or on their behalf by another person(s)
Note 1 to entry: Attention is drawn to the fact that the provisions of national or regional regulations can apply to the
definition of manufacturer.
[SOURCE: ISO 11139:
...