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

+1-503-709-8328
EisnerSafety.com
Schedule a Free 30-Minute Web Meeting

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.

Free presentation in London — With Leo Eisner, The60601Guy, & Ian Sealey

𝗪𝗵𝗮𝘁’𝘀 𝗼𝗻 𝘁𝗵𝗲 𝗺𝗲𝗻𝘂?

• Some 𝗳𝘂𝘁𝘂𝗿𝗲 𝗿𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 of IEC60601-1 , 4th being considered you 𝙢𝙖𝙮 𝙣𝙤𝙩 𝙚𝙭𝙥𝙚𝙘𝙩:
Gas Pathways,
Cleaning,
Disinfection,
AI/ML,
Voice Input/Output,
Adhesives for Applied Parts,
PPE,
and so much more….

• IEC60601-1 , 4th Ed.
• Applicable Standards
• Future Proofing Test Plans

IEC 60601-1, 4th edition is currently in development and there are some SIGNIFICANT changes underway.

Ian Sealey, Michael Kipping, James Pink and I, Leonard (Leo) Eisner, The60601Guy, will be discussing the changes, indicative timescales, and how to plan for them.

𝗪𝗵𝗲𝗻, 𝘄𝗵𝗲𝗿𝗲, 𝗵𝗼𝘄:
7 𝘖𝘤𝘵𝘰𝘣𝘦𝘳 2024
𝘊𝘭𝘢𝘺𝘵𝘰𝘯 𝘏𝘰𝘵𝘦𝘭 𝘊𝘩𝘪𝘴𝘸𝘪𝘤𝘬
𝘈𝘳𝘳𝘪𝘷𝘢𝘭 𝘧𝘳𝘰𝘮 𝟱:𝟬𝟬𝙥𝙢
𝘚𝘵𝘢𝘳𝘵 𝟱:𝟯𝟬𝙥𝙢
𝘌𝘯𝘥 𝟴:𝟰𝟱𝙥𝙢
𝙉𝙚𝙩𝙬𝙤𝙧𝙠𝙞𝙣𝙜 𝙖𝙣𝙙 𝙙𝙧𝙞𝙣𝙠𝙨 afterwards

TICK TOCK – Time is starting to run out for signing up for this event. If you wait too long there won’t be room so sign up now before we fill up. Don’t wait tooooooo long and miss this great opportunity to learn from experts.

Register by using our Contact form, send Leo an email (go to bottom of page) or send Leo a LinkedIn message via his profile.

Join the conversation on the LinkedIn Post and leave a comment.

Join me, Leonard (Leo) Eisner, the “IEC 60601 Guy”,

in a conversation with Subhi Saadeh of Combinate Podcast

as we look at how to assess applicable standards for medical and combination devices and a few highlights on IEC 60601-1, 4th ed. in Combinate Podcast 148 https://bit.ly/LIPostCombinatePodcast148LeoEisner

He really does his research and is a great interviewer. I always find it fun and intriguing to have a conversation with Subhi as I too learn from our conversations.

We discuss:
☞ complexities in assessing applicable standards
☞ understanding the impact of product environment, intended use, & applicable markets
☞ challenges and strategies for documenting standards assessments
☞ leveraging existing standards to avoid unnecessary development
☞ tips for small and large companies
☞ significance of early research
☞ essential stakeholders involved in standards assessment
☞ and more….

Join us in the conversation on LinkedIn and leave your comments so we can continue this discussion.

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.