Usability Engineering Process: User Research to Validation
The EN 62366-1 usability engineering process end to end, from use specification through summative evaluation to the usability engineering file.
Category
Electrical Safety & Systems Engineering
54 in-depth guides in this cluster
How to Write a Usability Engineering File Under MDR
What a usability engineering file must contain under MDR and EN 62366-1, from use specification to summative report. A living document, not static.
MDR Use Specification: Users, Environments, Profiles
The MDR use specification under EN 62366 is the most-skipped document. Decompose every procedure to make use-related hazards visible.
Usability Test Participants: How Many Users Do You Need
How to recruit usability test participants for medical devices under EN 62366-1, and why engineers and friendly KOLs are not intended users.
Writing Usability Test Protocols for Medical Devices
How to write a usability test protocol that survives notified body review under EN 62366-1, covering objectives, tasks, success criteria, and data capture.
Analyzing Usability Test Results: From Observations to Design Changes
How to turn raw usability observations into root-caused use errors, design changes, and risk file updates under EN 62366-1 and EN ISO 14971.
MDR Electrical Safety Requirements: How EN 60601-1 Helps You Demonstrate Conformity
MDR Annex I requires medical electrical equipment to be safe. EN 60601-1 is the harmonised standard that gives you presumption of conformity. Here is how it fits together.
MDR Electrical Safety Updates: Key Changes in EN 60601-1 Edition 3.2 for Startups
EN 60601-1 has accumulated amendments through A1, A12, A2, A13, sometimes called Edition 3.2. Here are the changes that matter for startups.
Why MDR References EN 60601-1: How the Safety Standard Supports Regulatory Conformity
MDR Article 8 lets harmonised standards demonstrate presumption of conformity. Here is how that mechanism works for electrical safety via EN 60601-1.
MDR Basic Safety and Essential Performance: Understanding EN 60601-1 Requirements
Basic safety and essential performance are the two core concepts of EN 60601-1. Here is what they mean and how they map to MDR Annex I.
Electrical Safety Testing for Medical Devices: A Startup Overview
Electrical safety testing under EN 60601-1 is done at a certified test lab. Here is what a startup should know before booking the lab.
MDR Electrical Safety Testing: What to Expect from the EN 60601-1 Test Lab Process
The EN 60601-1 test lab process is structured but unfamiliar to most startup founders. Here is what to expect from booking to certificate.
MDR Electrical Hazard Protection: Using EN 60601-1 Means of Protection
EN 60601-1 defines Means of Protection (MOP) against electrical hazards. Here is what MOPP and MOOP mean and how to design for both.
MDR Mechanical Safety: Meeting EN 60601-1 Requirements for Medical Devices
EN 60601-1 includes mechanical safety requirements, stability, enclosures, moving parts. Here is how they map to MDR Annex I and what testing looks like.
Thermal Safety EN 60601-1: Temperature Limits for Medical Devices
MDR thermal safety using EN 60601-1 temperature limits: applied parts, hot surfaces, heat-balance, and what a test lab actually measures for burns protection.
MDR Requirements for PEMS: Programmable Electrical Medical Systems via EN 60601-1
PEMS sit at the intersection of EN 60601-1 and EN 62304. Here is how the two standards combine for programmable electrical medical systems under MDR.
MDR EMC Requirements: Using EN 60601-1-2 for Electromagnetic Compatibility
MDR Annex I requires medical electrical devices to be electromagnetically compatible. EN 60601-1-2:2015+A1:2021 is the harmonised standard. Here is what it means in practice.
EMC Testing for Medical Devices: Emissions and Immunity Requirements
EN 60601-1-2 defines EMC testing for medical devices: emissions limits and immunity levels. Here is the practical scope of EMC testing for startups.
How to Design for EMC Compliance from the Start
Design choices that prevent EMC failures in medical devices: PCB layout, shielding, grounding, cables, and pre-test prep aligned to MDR Annex I §14.5.
MDR Usability for Electrical Devices: EN 60601-1-6 and EN 62366
How EN 60601-1-6 cross-references EN 62366-1 for medical electrical equipment, and what a single usability file must contain under MDR.
MDR Alarm Systems: EN 60601-1-8 for Medical Electrical Equipment
How EN 60601-1-8 defines alarm priorities, audio and visual signals, and distributed alarms for MDR-compliant medical electrical equipment.
MDR Environmentally Conscious Design: EN 60601-1-9
EN 60601-1-9 applies environmentally conscious design to medical devices. Lifecycle impact, design choices, and evidence for the MDR technical file.
MDR Closed-Loop Controller Safety: EN 60601-1-10
EN 60601-1-10 governs closed-loop controllers in medical devices. Lifecycle activities, validation, failure-mode analysis for MDR compliance.
MDR Home Healthcare Requirements: Applying EN 60601-1-11
How EN 60601-1-11 extends EN 60601-1 for home use devices under MDR, lay users, mains variability, IFU obligations, PMS implications.
MDR Emergency Environment Requirements: Using EN 60601-1-12
How EN 60601-1-12 extends EN 60601-1 for EMS, ambulance, field and air-ambulance devices under MDR, ruggedization, EMC, battery autonomy.
MDR Particular Standards: Finding the Right EN 60601-2-xx
How the EN 60601-2-xx particular standards work under MDR, how to find the right one for your device, and how conflicts with EN 60601-1 are resolved.
MDR Functional Safety: IEC 62443 and IEC 61508 for Devices
When functional safety concepts from IEC 61508 and IEC 62443 add value to MDR medical device development, and what you cannot claim about them.
MDR Power Supply Safety: EN 60601-1 for Medical Devices
How EN 60601-1 shapes medical power supply design: isolation classes, leakage limits, and qualifying COTS medical-grade supplies for the technical file.
MDR Battery Safety: EN 60601-1 for Portable Medical Devices
Battery selection, charging, thermal runaway, BMS design, and transport for portable medical devices under MDR and EN 60601-1.
MDR Wireless Device Compliance: RED and EN 60601-1
Wireless medical devices must meet both MDR and Radio Equipment Directive 2014/53/EU. Here is how to plan the dual-compliance path without surprises.
Medical Device Packaging Design: MDR Requirements and Standards
Packaging is a regulated component of the medical device. Here is what MDR Annex I and the EN ISO 11607 series actually require, and how to pass audit.
Environmental Testing for Medical Devices: Climate, Vibration, Drop
MDR Annex I §17.1 requires devices to work under foreseeable environmental conditions. Here is how to plan climate, vibration, and drop testing early.
Systems Engineering V-Model for Medical Device Startups
How startups can apply a lean systems engineering V-model to medical device development under MDR and EN ISO 13485 without drowning in paperwork.
System Requirements for Medical Devices Under MDR
How to write, manage and trace system requirements for medical devices under MDR and EN ISO 13485 clause 7.3.3, from GSPR to verifiable specifications.
System Architecture Documentation for Medical Devices Under MDR
What a system architecture document must contain for a medical device under MDR Annex II, including hardware/software boundaries and safety segregation.
System Integration and Verification Testing for Medical Devices
System integration and verification testing for medical devices under MDR: plan, traceability, evidence, and handling failures the auditor will accept.
Hardware Development for Medical Devices: PCB Design and Documentation
Hardware development and PCB design for medical devices under MDR: safety and EMC decisions, schematic and BOM control, and evidence auditors request.
MDR Firmware Development: Where EN 62304 Meets Hardware Requirements
Firmware for medical devices under EN 62304 and EN 60601-1: hardware abstraction, real-time constraints, and joint hardware and firmware verification.
MDR Electrical Safety Costs: Estimating EN 60601-1 for Startups
Realistic cost ranges for EN 60601-1 and EN 60601-1-2 testing under MDR. Categories, drivers, and where startups can save without cutting corners.
The 8 Most Common MDR Electrical Safety Test Failures: EN 60601-1 Gaps to Avoid
The eight most common EN 60601-1 test failures in MedTech startup labs, each with the test that caught it and the design fix.
MDR Electrical Safety Checklist: EN 60601-1 for MedTech Startups
A startup-sized electrical safety checklist against EN 60601-1 and EN 60601-1-2, prioritized by risk of failure and mapped to MDR Annex I.
The Cybersecurity Lifecycle Approach for Medical Devices Under MDR
Why MDR cybersecurity is continuous, not one-time. EN IEC 81001-5-1 lifecycle activities, CVE handling, and the Subtract to Ship minimum viable setup.
MDR Cybersecurity Conformity: How IEC 81001-5-1 Helps Health Software
Mapping EN IEC 81001-5-1:2022 activities onto MDR Annex I §17 obligations. The harmonised cybersecurity route for health software under MDR.
How to Write a Cybersecurity Risk Assessment for Your Medical Device
A cybersecurity risk assessment that lives inside the EN ISO 14971 risk file. Threat, asset, vulnerability flow and the minimum viable template for MDR.
Privacy by Design for Medical Devices
How GDPR Article 25 privacy by design and by default maps onto MDR design controls, turning data minimisation into a concrete medical device constraint.
Cloud Security for Medical Devices: AWS, Azure, GCP
How to choose and qualify AWS, Azure, or GCP for a medical device under MDR, GDPR, and the shared responsibility model, with EU residency in mind.
Cybersecurity for Connected Medical Devices: IoT, IoMT
Why IoT and IoMT medical devices need a dedicated cybersecurity lifecycle and why 'not connected' is rarely a complete defence under MDR Annex I.
IVDR Performance Evaluation: The Equivalent of Clinical Evaluation
IVDR performance evaluation replaces MDR clinical evaluation for IVDs. Scientific validity, analytical performance, clinical performance explained.
Clinical Performance Studies Under IVDR: When and How
IVDR clinical performance studies: when they are required, study design, ethics approval, sample sizes, endpoints, applicable standards.
Scientific Validity, Analytical and Clinical Performance Under IVDR
The three pillars of IVDR performance evaluation: scientific validity, analytical performance, clinical performance. Each builds on the previous.
DiGA and MDR: How CE Marking and BfArM Listing Work Together
DiGA approval is not CE marking. DiGA MDR CE marking BfArM explained: two regulatory paths, two evidence bars, one product.
DiGA for Startups: Can Your Digital Health Product Qualify?
DiGA startup qualify criteria, honestly explained. Four gates, one CE mark, and the evidence bar Tibor says founders underestimate.
DiGA Evidence Requirements: Proving Positive Care Effects
DiGA evidence positive care effects, explained honestly. Beyond MDR Article 61: what BfArM expects, and why founders underestimate it.
In-House Testing vs. Accredited Labs: What MDR Requires
When in-house testing is acceptable under MDR and when an ISO/IEC 17025 accredited lab is effectively mandatory for startup evidence.