IEC 60601-1, 4th Edition Survival Guide – Why It Matters For MedTech

The 4th Edition of IEC 60601-1 is no longer a future concern. Eleven of the twelve hazard fragments (WGs 37–48) have circulated Committee Drafts (CDs). All fragments have issued first CDs (WG 47 is at CD2), except WG 45 (Optical Radiation Hazards).

That means manufacturers, design houses, trade associations, test houses, and regulators must follow the working group outputs closely. If you cannot stay directly engaged in National or International (IEC) committees, you will need trusted expert guidance. These changes will impact design, QMS, labeling and IFUs, documentation, and test strategies.

Download the One-Pager: 9 Things RA/QA Leaders Must Know

Quick to read and easy to share with RA/QA, Design, Documentation, Supply Chain, Test, and Management. Use it to brief teams and kick off transition planning for IEC 60601-1, 4th Edition.

Your 4-Part Survival Kit

Download One-Pager PDF Watch Webinar Replay Summary Article Download Slide Deck

WG Status at a Glance

First-round CD comment periods are closed; the Compilation of Comments (CC) now drives edits in each WG. Expect a first wave of CD2s planned for early Dec 2025 after the Nov 2025 Milan work week, and a second wave following the Apr 2026 Shanghai meetings around Jun 2026. Stay current with CDs and CCs — or engage experts — because changes here will flow into design inputs, QMS, labeling/IFUs, V&V, and documentation.

9 things RA/QA leaders must know

One-Pager

Sean Smith captured nine essentials from the webinar (timestamps included):

1. Scope & Essential Performance; the boundaries for design, testing and compliance
2. Use Environments & Users; usability files and IFUs must match
3. Software Requirements Expanded; PEMS, SaMD, SIMD now covered
4. Collaterals Integrated; 1,000+ pages, one-stop standard
5. QMS Impact Areas; labeling, ISO 20417 reliance
6. EMC & Wireless Coexistence; higher RF fields, coexistence testing
7. Regulator Participation & Timeline; April 2030 + transition window
8. Hardware & Documentation Updates; alarms, usability, labeling, V&V
9. Immediate Actions; build an impact register, update labeling, begin EMC testing

The webinar replay

Watch Webinar

The replay provides the why — why regulators are focusing on scope and user environments, how expanded software/PEMS requirements shift the burden of evidence, and why wireless coexistence is no longer optional outside the US.

The summary article

Summary Article

This article organizes the hour-long webinar into a reference that RA/QA leaders and design managers can use to pinpoint pain points to focus on to avoid the fire drills of last-minute planning.

How to use this survival kit

1. Kick off a cross-functional session using the one-pager as the agenda
2. Watch replay segments together (software, EMC, labeling, etc.)
3. Assign owners for each of the 12 hazard Working Groups across RA/QA, Design, Test
4. Use the article as a quick reference to keep momentum
5. Track WG outputs and rely on your internal or external experts

one-pager for overview, the replay for context, the article for detail, and the slide deck for depth give your team a GPS starting point for 4th Edition readiness.

How We Can Help

If your team needs help mapping the 4th Edition into your design controls, QMS, labeling, or testing strategy, my team at Eisner Safety Consultants and I are ready to support you.

Schedule a call with me, Leo, the IEC 601 Guy

Keep the Conversation Going

• Join the LinkedIn conversation around the replay post and comments — replay post and comments
• See the earlier discussion thread and join the discussion: Major changes to IEC 60601-1, 4th Ed. are closer than you think
• Explore more insights on my blog or listen to past podcasts

Impacts on IEC 60601-1, 4th Ed. – Webinar Recap and Industry Reactions

Insights from 110+ MedTech professionals on the upcoming 4th Edition and its impact on design controls, QMS, and labeling.

Video Replay Download Slides Schedule a Call

On August 15, 2025, I had the privilege of presenting the Impacts on IEC 60601-1, 4th Edition webinar as part of MLVx Friday In-Focus. The turnout was incredible, with more than 110 MedTech professionals from around the world joining. Startups, SMEs, large manufacturers, test labs, and regulators were all represented.

We unpacked the drivers and major changes in the upcoming 4th Edition, and the discussion didn’t stop when the webinar ended. Some of the most valuable insights came afterward in the LinkedIn conversations that followed.

See the replay post and comments here on LinkedIn
And the prior post: Major changes to IEC 60601-1, 4th Ed. are closer than you think

What the Industry Is Talking About

From the comments and follow-up conversations, four major themes stood out:

• SME vs Large Corp Burden – Smaller companies worry the 4th Edition requirements could hit them harder than large corporations with more resources.
• National & International Committee Involvement – Many are realizing that participating in standards development, even at the national level, gives manufacturers a seat at the table. Being involved internationally is even more powerful if you can swing it.
• Rationale Behind Requirements – The Design Specification requires a rationale for each requirement of the standard. This is not fully addressed in Ed. 3.2, so the change should help improve industry understanding of the standard going forward.
• Impacts on Design Controls, QMS, and Labeling – These changes are not just “paper exercises.” They will reshape how manufacturers approach design controls, QMS integration, and labeling processes across the entire product lifecycle.

Replay Video

If you missed the live session or want to revisit the details, here’s the full webinar replay:

Download the slides here

Why This Matters

As the IEC 601 Guy, I’ve been deeply involved in the development of IEC 60601-1, not just for this edition but also for the previous edition. The 4th Edition is shaping up to be one of the most impactful yet, especially in how it connects to design controls, supplier oversight, and QMS processes.

Conversations like these are important because they highlight the real-world concerns of manufacturers, regulators, and test labs. They help ensure implementation of the standard is proactive, not reactive.

How We Can Help

If your team needs help mapping these 4th Edition changes into your design controls, QMS, or testing strategy, my team at Eisner Safety Consultants and I are here to support you.

Schedule a call with me, Leo, the IEC 601 Guy. My team & I are here to support your needs.

Keep the Conversation Going

Standards only evolve when industry voices are active. I encourage you to:

• Join the LinkedIn conversation: Replay post + comments
• See the earlier discussion thread: Major changes to IEC 60601-1, 4th Ed. are closer than you think
• Explore more insights on my blog: Standards Updates or see my previous Podcasts

Together, we can make sure these changes lead to safer devices, smoother regulatory pathways, and stronger compliance strategies.

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.

Leo Eisner, The60601Guy will be visiting London in October. You have the chance to sit down with me, The60601Guy, have a cup a coffee or a beer and talk IEC60601, design for compliance, and standards that apply to your device. I have time slots open on 7, 8, and 11 of Oct. Or join me for a dinner on the 8 or 11 Oct.

Meet me in London – I want to hear from you the week of 7 Oct. These two hour slots are limited before they are gone, 𝗯𝗼𝗼𝗸 𝗻𝗼𝘄 𝗼𝗻 𝗺𝘆 𝘀𝗽𝗲𝗰𝗶𝗮𝗹 𝗰𝗮𝗹𝗲𝗻𝗱𝗮𝗿 for 𝗺𝘆 𝗟𝗼𝗻𝗱𝗼𝗻 𝘃𝗶𝘀𝗶𝘁. I’d love to chat!

Let’s connect, and explore how we can support your company with our international team of compliance & regulatory experts from Eisner Safety Consultants. I’m eager to learn what you’re working on and how you’re driving change and innovation in the industry, and how we can support you to get you to market faster.

Let’s meet up! 𝗕𝗼𝗼𝗸 𝘁𝗶𝗺𝗲 𝗼𝗻 𝗺𝘆 𝘀𝗽𝗲𝗰𝗶𝗮𝗹 𝗰𝗮𝗹𝗲𝗻𝗱𝗮𝗿 for 𝗺𝘆 𝗟𝗼𝗻𝗱𝗼𝗻 𝘃𝗶𝘀𝗶𝘁.

Regulatory Update – January 2022 Index

I have 4 Regulatory updates (US (2), England, Scotland & Wales (1), EU 1)) for you that are full of great information. Below is a mini index so you can jump around the world as needed – Enjoy and let me hear your feedback on Linked for this post.

1. FDA Updates Recognized Consensus Standards db with List 057
2. FDA Guidance documents Issued – Final and Drafts Recently
3. EC Has Finally Set-Up a Harmonised Standards Website for MDR & IVDR
4. UK Designated Standards for Medical Devices, Active Implants, and IVDs published

FDA Updates Recognized Consensus Standards db with List 057

Read the Federal Register Notice for the modification of list 056 on 9 Dec 2021 to see specifically which standards were withdrawn (you can’t see that detail on the db as withdrawn standards are not shown on the db). The ones that are transitioned and the transition periods are noted but only for the transition period so it is always good to review the Federal Register Notices to understand the full picture in my humble opinion.

Download the table with the list 057 Recognized Consensus Standards for the full list of standards that were updated on this latest update.

Or you can go to the FDA’s Recognized Standards db and search for 12/20/2021 to 12/20/2021 Publication date range to see the 90 standards that are part of the List 057 updates (some are just version changes, some are new standards – See the Federal Register Notice above)

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FDA Guidance documents Issued – Final and Drafts Recently

FDA has been busy with Draft & Final Guidance documents in the last 90 days. I put together a document of some of the more relevant Guidance documents for the medical device industry over the last 90 days. This download includes a Comment column that is a summary of the Guidance (FDA & sometimes my comments added). If the Guidance is a draft I provide the comment link if you would like to send in a comment to the FDA (public or anonymous can be posted), of course the link for the guidance, and more. The Guidances are: 1) Combination Devices (Final), 2) Patient-Reported Outcome Instruments for Use in Medical Device Evaluation, 3) Patient Engagement in the Design and Conduct of Medical Device Clinical Studies, 4) Assessing the Credibility of Computational Modeling and Simulation in Medical Device Submissions, 5) Technical Considerations for Medical Devices with Physiologic Closed-Loop Control Technology, 6) Referencing the Definition of “Device” in the Federal FD&CA in Guidance… 7) Content of Premarket Submissions for Device Software Functions.

Download the

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EC Has Finally Set-Up a Harmonised Standards Website for MDR & IVDR

The European Commission overhauled the sectoral website on Medical Devices in now accessible from the DG SANTE’s Public Health website – a new specific webpage on Harmonized Standards has been set up from the web page “Medical Devices – Topics of Interest”, which has some great topics of interest including Notified Bodies (You can find the NBs for both the MDR & IVDR, the codes they are designated under & more info), UDI (Bountiful resource page), Reprocessing (Well worth reading to understand where the European Commission and each country stands on this issue currently), Latest Updates (separate web page), and more. The Harmonisation web page contains the links to the standardization requests in force and to the publications in the OJEU of references of harmonized standards conferring a presumption of conformity in support of the MDR & the IVDR. The page will gradually grow with more publications, and also with future amendments to the standardization request.

For the latest lists of the MDR & IVDR Harmonized Standards please go to my previous post. Most likely the next update likely to occur March /April 2022.

The above information is thx to Mario Garbielli Cossellu a Policy & Legal Officer at the European Commission provides many great updates on the MDR & IVDR. Check out his recent posts there is always some great content to keep up to date on. I’ve been following him for years on LinkedIn.

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UK Designated Standards for Medical Devices, Active Implants, and IVDs published

The general Designated Standards website covers all categories of products, services or processes to comply with essential requirements of the applicable legislation.

Within that web page there is information on the designation process, reference of designated standards, and then the different industries, product, and processes. Within that list there is a Healthcare engineering section.

The 3 important lists are all controlled by the MHRA. They are:

1. Medical Devices
2. In Vitro Diagnostic Medical Devices
3. Active Implantable Medical Devices

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Need Help?

Need help with the UK, EU MDR requirements, IEC 60601 (Medical Electrical Equipment), work thru 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. Feel free to schedule a call with Leo or contact Leo at Leo@EisnerSafety.com or through our contact form.