Once the 4th Edition is published, redesigns and QMS updates will be far more costly.

Direct insights from someone in the development of IEC 60601-1, 4th Edition

Get an insider’s view of the upcoming changes, their real-world impact, and how to prepare, from someone directly involved in developing the standard.

Event Recap – MLVx Friday In-Focus

On Friday, August 15, the MLVx Friday In-Focus with Sean Smith brought together Leonard (Leo) Eisner, The IEC 60601 Guy, and 110+ professionals from around the globe, including the UK, Romania, US, France, Switzerland, Germany, Finland, and Pakistan, representing medtech manufacturers, regulators, test houses, and standards developers.

We focused on the impact of IEC 60601-1, 4th Edition, the global standard that defines safety and essential performance for medical electrical equipment, and what’s coming that many companies are still not prepared for.

The highlight was an impromptu expert panel with leaders in risk management, software, cybersecurity, regulatory submissions, and combination devices. Together, we tackled questions from every angle, sharing real-world insights on design, testing, and compliance challenges. The discussion showed exactly what’s possible when top experts collaborate to help the industry prepare for disruptive change.

(Full presentation available for download at the bottom of this post.)

Unlock Your IEC 60601-1 Insider Advantage

• Mitigate Risks: Spot disruptive changes early, prevent costly redesigns, and align documentation ahead of competitors
• Accelerated Compliance: Seamlessly integrate evolving requirements into your development pipeline
• Leadership Insight: The IEC 60601 Guy and our expert team track areas of interest for your organization based on draft documents
• Behind Closed Doors: Access knowledge while it’s still being developed
• Ready to Leap Ahead? Let’s turn this insider pipeline into your 4th Edition fast-track

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If you missed the live session, this recap and presentation will help you understand what’s coming — and more importantly, how to prepare.

Posted on LinkedIn June 19, 2025. Updated with extra blog content June 25, 2025.

Over the last two weeks – and with a Friday night (6/20/25 Geneva time – late) finale still to come – we’ve seen CD1s and CD2 (WG 47 ONLY) fly out for Fragments 5, 6, 7, 8, 10, 11, and 12 from WG 41 through WG 48, but for WG 45.

This is not just standards spring cleaning – these are foundational changes to the IEC 60601-1 General Standard, folding the Collateral standards into the core. If you have medical electrical equipment, medical electrical systems or software SaMD or SiMD you need to be aware of these changes. If you’re a manufacturer, test lab, trade association, Notified Body, Regulator or other interested party who owns a risk file… you need to review this.

These fragments cover hazards related to: • Electrical, mechanical, thermal, and fire • Software & PEMS (SaMD, SiMD, firmware, OS…) • EM Disturbance, wireless coexistence, ionizing radiation, and electromagnetic exposure (EMF)

The International comment deadlines start closing August 29th, with more due by September 12th. National deadlines close much sooner (does your summer holiday schedule conflict?)

Don’t wait for the FDIS – get involved now or get caught off guard later.


Read the full breakdown of all Working Groups, due dates, and what you should do now:

Here’s the who’s who of the Working Groups behind the fragments with CD1 to issue 20 July:

• WG 41 – PEMS (e.g., SaMD (Software as a medical device), SiMD (Software in a medical device), firmware, software, apps, OS, drivers) related hazards WG 41 link

• WG 42 – Electrical hazards WG 42 link

• WG 43 – Mechanical hazards WG 43 link

• WG 44 – Thermal and fire hazards WG 44 link

Other Fragments CD1s & CD2 have recently published – clock ticking to get your comments in:

• Fragment 11 – WG 47: Electromagnetic exposure hazards (not optical or ionizing but including SAR) WG 47 link CD2, closes 29 August

• Fragment 10 – WG 46: Ionizing radiation hazards WG 46 link CD1, closes 5 September

• Fragment 12 – WG 48: Electromagnetic disturbances (including wireless coexistence) WG 48 link CD1, closes 5 September

The early pack of CD1 Fragments released late last year

Fragments 1–4 and 11 from WG 37–40 & WG 47 were released as CD1 back on December 6, 2024, with comments closing February 28, 2025. You can still access them if you’re a National Committee member for SC62A or a WG participant. If not, consider joining — this is a major transformation, and early awareness = better preparation. Access link

Here’s a handy summary table of the IEC 60601 Fragments, their WG #s, their titles, the issue & close dates & more.

Who Should Be Reviewing

• Design and Systems engineers
• Risk management experts/leaders
• Electrical & mechanical designers
• Software designers (SaMD/SiMD, firmware, OS)
• EMC/EMF compliance leads
• Compliance engineers
• Regulatory and quality teams
• Usability & human factors engineers
• Test labs
• Trade Associations
• Regulators
• Notified Bodies
• Other Interested Parties

What You Need to Do

1. Review the Drafts & the 4th ed. Design & Architecture Specs Now • Assign key experts by hazard/WG • Map against your design controls: Design Spec • Understand the architecture spec: Architecture Spec
2. Track IEV Part 880 Terms • Stay aligned with the evolving definitions: Terms & Definitions
3. Analyze Impact to Products • Run gap assessments • Identify implications for design, testing, and documentation
4. Submit Comments • Through your National Committees (ANSI, BSI, DIN, etc.) • Clear, technically sound feedback = meaningful influence
5. Update Design & Risk Inputs • Don’t wait for the final version to start aligning
6. Integrate Into Product Roadmaps • Work with R&D, QA/RA, and exec sponsors • Flag projects needing early adaptation
7. Engage the Right Experts • Join WGs or partner with someone who’s inside () • Stay active – your input now shapes what becomes final
8. Invest in Training • Get smart now to avoid surprises later

Don’t wait for the FDIS – get involved now or get caught off guard later.

Need help with standards?

We provide support for your design and development process for regulatory submissions.? Eisner Safety Consultants can help by

• Assisting with strategic compliance planning for your medical electrical product lines,
• Providing regulatory support when FDA or a regulator asks technical questions on your submission.
• Identification of applicable standards, laws, regulations, guidances, and directives up front to support your design process effectively.
• Design Documentation Reviews providing expert analysis supporting the design development process to avoid unnecessary design and development delays.
• We provide EU, US, and other countries regulatory requirement reviews of standards, laws, directives, and guidance.
• Providing support with Swiss MedDO, EU MDR, clinical evaluation assessment, NB remediation, STEDs, and more.
• Interfacing with test houses for medical safety, EMC and arrange other testing.

Feel free to schedule a web meeting with Leo or contact us.

Join me, Leo Eisner, The IEC 60601 Guy, as I lead an interactive and fun workshop at the 10X Medical Device Conference in Newport Beach, Ca on May 7 – 8, 2025. Turn Medical Device Standards into Your Competitive Advantage, and discover practical strategies to leverage standards, avoid costly errors, and accelerate your product development cycle.

Don’t make the 5 costly mistakes companies make with Medical Device Standards. Learn from the IEC 60601 Guy himself.:

• Late Identification of Applicable Standards: Leads to expensive redesigns and delayed timelines
• Ignoring Expert Standards Guidance: Results in regulatory rejections and costly resubmissions
• Unprepared Risk Management File for Testing: Risks unnecessary costs due to lack of strategic planning for compliance.
• Unprepared Regulatory Submissions: Leads to costly setbacks and market-entry delays
• Underestimating Education and Training: Creates knowledge gaps, increasing errors and compliance risks.

I want to thank Sean Smith and his team from 10X for all his help and dedication for putting on this event. He is doing an amazing job and please contact him if you are interested.

Need help with standards?

We provide support for your design and development process for regulatory submissions.? Eisner Safety Consultants can help by

• Assisting with strategic compliance planning for your medical electrical product lines,
• Providing regulatory support when FDA or a regulator asks technical questions on your submission.
• Identification of applicable standards, laws, regulations, guidances, and directives up front to support your design process effectively.
• Design Documentation Reviews providing expert analysis supporting the design development process to avoid unnecessary design and development delays.
• We provide EU, US, and other countries regulatory requirement reviews of standards, laws, directives, and guidance.
• Providing support with Swiss MedDO, EU MDR, clinical evaluation assessment, NB remediation, STEDs, and more.
• Interfacing with test houses for medical safety, EMC and arrange other testing.

Feel free to schedule a web meeting with Leo or contact us.

In this episode of the Global Medical Device Podcast, Etienne Nichols sits down with Leo Eisner, founder of Eisner Safety Consultants and a leading voice in IEC 60601 standards development.

We unpack the upcoming revisions to IEC 60601, 4th ed., focusing on the rationale behind these changes, their impact on medical device design, and how MedTech professionals can prepare for the future.

Leo provides insights into the intricate process of updating global standards, shares practical advice for compliance, and discusses the role of risk management in ensuring safer, more effective medical devices.

Key Points:

1. New Modular Approach:
   • The updated standard adopts a modular approach (12 working groups focused on specific hazard areas).
   • Simplifies updates by consolidating Collateral Standards into the General Standard.
   • Aligns better with global regulations.
2. IEC 60601-1 4th Edition:
   • Focuses on addressing various hazards including:
     • physical environment,
     • electrical,
     • thermal and fire,
     • mechanical,
     • user interface (usability, alarms, information supplied by the manufacturer & user interface aspects),
     • materials,
     • optical radiation, and
     • electromagnetic exposure hazards.
3. New Requirements:
   • Introduces new international requirements for wireless coexistence and other cutting-edge technologies (e.g., gas pathways, user interface aspects).
4. Consolidation of Standards:
   • Collateral standards are being consolidated to improve consistency and reduce the update cycle time for the 60601 series.
5. Timeline and Publication Dates:
   • Expected timeline for the fourth edition is 2029-2030.
   • Companies need to plan now, though the actual timeline may slip depending on various factors.
6. Benefits of Proactive Planning:
   • Proactive planning and test preparation are essential for regulatory success.
   • Staying informed and embracing continuous learning in MedTech are key factors for success.
7. Practical Advice for Compliance:
   • Begin designing for new standards early, even before they are finalized. MedTech design cycles are long.
   • Engage with industry groups and standards organizations.
   • Use test planning to streamline development and meet regulatory expectations efficiently.
8. Engaging in the Standards Development Process:
   • Manufacturers are encouraged to engage in the standards development process and submit comments.
   • This proactive approach can help shape the standards and ensure they are practical and achievable.

These updates aim to enhance safety and performance while keeping pace with technological advancements. Manufacturers need to stay informed and prepare for the impact these changes will have on their product lines and quality systems.

Resources:

Design specification Outline for the fourth edition of IEC 60601-1

Architectural Specification For Safety Standards of Medical Electrical Equipment, Medical Electrical Systems, and Software Used in Healthcare

Only 5 of the 12 Fragments went out for CD on 6 Dec 2024, which were Working Groups (WGs) WG37, 38, 39, 40 & 47 (Fragments 1, 2, 3, 4, & 11 respectively). The status of each of these Fragments is noted below:

• Fragment 1 (WG37) Status
• Fragment 2 (WG38) Status
• Fragment 3 (WG39) Status
• Fragment 4 (WG40) Status
• Fragment 11 (WG47) Status

The other 7 fragments will go out for CD approximately May ’25 (estimated schedule is my best intelligence). Fragments 5 – 10 & 12. You can look at the SC 62A Work Programme and find the Fragment number in the descriptions for each project on the first 12 projects of the Work Programme to find the status of each Fragment.

If you are a National Committee (NC) member and want to comment on the Fragment depending on your NC rules you may be placing your comments directly into the Online Standards Development (OSD) Platform for the Fragment. Other NCs are collecting the comments and then the NC Secretariat (or similar role) will be responsible for placing all the comments into OSD. Please check with your NC for your specific rules. Details about the OSD platform, How to use OSD, OSD resources (various training and other resources)

New terms and definitions which IEC 60601-1, 4th Ed. will be based on but other Technical Committees will adopt across the Healthcare sector to increase consistency – “International Electrotechnical Vocabulary (IEV) – Part 880: Electrical equipment, electrical systems and software used in healthcare” – IEC Website that has the schedule, list of draft documents. The CDV was released on 13 Dec 2024. If you are a National Committee Member of TC 1, TC 62, SC 62A, SC 62B, SC 62C, SC 62D, TC 65, TC 66, TC 76, TC 87, or SyC AAL you should be able to get access to this document and be able to comment on this document. This document is also being distributed for comment to ISO TC 210 and some additional ISO TCs .

Engage with the Podcast on the LinkedIn Post we’d like to hear from you

If you found this interesting or helpful, consider reposting on LinkedIn; follow me, Leonard (Leo) Eisner, the60601Guy and click the so you don’t miss future content.

Need Help?

Need help with 60601 series standards including EMC? Eisner Safety Consultants can assist with strategic compliance planning for your medical electrical product lines, provide support when FDA or a regulator asks questions for a submission, and more. We deal with EU, US, and other country regulatory requirements, standards, laws, directives, and more. Our team also provides support with Swiss MedDO, EU MDR, clinical evaluation assessment, NB remediation, STEDs, and more. We work with many test labs for medical safety and EMC and can arrange other testing as well. Feel free to schedule a web meeting with Leo or contact us.

Last week, 29 Apr – 3 May 2024, marked a significant milestone for the advancement in the world of patient safety and healthcare. The IEC TC 62/SC 62A convened its IEC 60601-1, 4th edition project kick-off meeting at AAMI in Arlington, Virginia. More than 200 experts from all corners of the globe attended in person, contributing to an inspiring and impactful week-long meeting.

The focus of this meeting was “level setting” all the parties on the development of requirements for the 4th edition of IEC 60601-1, which sets safety requirements for medical electrical equipment (also known as active medical devices). Twelve working groups (WGs) gathered to strategize their efforts, guided by the Design Specification for the 4th edition and the Architecture Specification.  The first day was set with training to help all parties get an understanding of project requirements and ask questions based on the Design Specification and the Architecture Specification. The next 3 days focused on the 12 WGs working on their strategies for the start of the project and the plans to move forward. The last day was a wrap-up and getting feedback on how to improve the process with lots of great discussion from the week. 

An Advisory Group (AG 50) is used to collaborate with all 12 WG co-convenors and secretaries, and IEC SC 62A officers ensuring the overall success of the project.

As a co-convenor for WG39, which addresses User Interfaces (Including information provided by the manufacturer, Alarm Systems and Usability Engineering Process), I am honored to be part of this excursion in the development of this standard for the support of the healthcare industry for the next edition. Alongside my co-convener, Martin Stangenberg, we led discussions and consensus-building within our WG. Our WG is comprised of amazing experts.  We had over 30 experts in the room including regulators from 5 countries; test houses; usability, labeling, alarm systems, and robotics experts. We had over half of our experts from the whole WG in attendance at the meeting. Our responsibilities include coordinating with other experts to develop basic safety and essential performance requirements related to User Interface Aspects Hazards for our part of the standard. Each WG is working on a different set of hazards as described in the post “IEC 60601-1, 4th ed. — Where do we stand?“.

As an expert on WG37, I also spent part of the week with WG 37 developing requirements related to general issues concerning underlying concepts including basic safety & essential performance, single fault safety, type testing.  Correlation with processes relevant for IEC 60601-1 defined by other process standards (e.g., risk management) for IEC 60601-1, 4^th ed.

It was great to meet all the new people and see them get involved for the first time in the standardization process as well as work with familiar faces I have worked with for many years. It is a well-rounded group of individuals, supporting this next edition, with many different perspectives but with the mindset to provide the patient with a safe product.

I extend my appreciation to all who have made this happen — the officers, the design specification and architecture specification teams (a long road to get here), my mentors, and all the national committee experts for coming together in this massive effort. Now the real work of the experts in the WGs begins….

Need help with 60601 series standards (Medical Electrical Equipment) including EMC; training to 3rd or 4th edition; strategic planning for your medical electrical product lines; need support when FDA or a regulator asks questions for a submission Eisner Safety Consultants experts deal with EU, US, & other country regulatory requirements & standards, laws, directives, and more. Leo Eisner is an expert on standards development and sits on many standards committees. He also has experts on additional standards committees and we all talk to the regulators. He has a team of experts to support your needs.

We work with many test labs for Medical Electrical Safety & EMC and can arrange other testing, as well. Please let us know if we can help when you contact us.

Feel free to schedule a call with Leo or contact Leo at Leo@EisnerSafety.com or through our contact form.

This is a follow-up to IEC 60601-1, 4th Ed. – Time to Get Involved Is Now! and IEC 60601-1, 4th Edition Project – Where Do We Stand? – UPDATED 30 Nov 2023. 3 Weeks after the initial Nomination of experts and Co-conveners went out on 22 Dec 2023, the last 2 Working Group (WG) Q documents were released on 12 Jan 2024 for WG43 Mechanical Hazards and WG46 Ionizing Hazards. For WG43 & WG46 the Q document nomination period ends on 23 Feb 2024.

Having new people (young and old alike) interested in joining all the new WGs (12 in total) who have the technical experience and expertise for the WG subject matter (not all subjects within a WG but some and each National Committee (NC) decides on its selection process and criteria).

Some NCs may accept experts after the applicable Q documents close (no guarantee which countries) but if you wait too long you won’t be able to join the kickoff meeting for the IEC 60601-1, 4^th ed. project. The meeting will be held at AAMI in the US (Virginia) the week of 29 April – 3 May 2024. This is a closed meeting – you have to be nominated as an NC expert for a specific WG.

So, stop waiting to become an expert on 1 of the 12 WGs for IEC 60601-1, 4th ed. Now is the time to take action & contact your National Committee to get nominated as an expert.

I have updated the table in the IEC 60601-1, 4th Ed. – Time to Get Involved Is Now! post to include the two new WG Q documents (WG43 & WG46) just released so all in one place – below. The two previous posts discuss nominations of experts and considerations of being an expert. Please review before putting your name in for nomination.

Need help with 60601 series standards (Medical Electrical Equipment) including EMC; strategic compliance planning for your medical electrical product lines; need support when FDA or a regulator asks questions for a submission Eisner Safety Consultants experts deal with EU, US, & other country regulatory requirements & standards, laws, directives, and more. Leo Eisner is an expert on standards development and sits on many standards committees. He also has experts on additional standards committees and we all talk to the regulators. He has a team of experts to support your needs.

We work with many test labs for Medical Safety & EMC and can arrange other testing, as well. Please let us know if we can help when you contact us.

Feel free to schedule a call with Leo or contact Leo at Leo@EisnerSafety.com or through our contact form.