Welcome to my Digital Health Regulatory Pathways Master Class series. This series breaks down the core concepts every founder should understand about US and EU regulatory pathways, from what qualifies as a medical device to how risk classification affects your timeline, cost, and market strategy.

You’ve landed on #2 of this series, where I explain the very definition of a regulated medical device in the US and the EU.  

Medical Device 101 — What Counts, What Doesn’t, and Why It Matters

 

If you’re a digital health founder building software or AI-enabled tools, you may be wondering:

 “Is my product even considered a medical device?”

The answer to this question determines whether you need FDA approval or notification, only product registration and listing, or a Notified Body review.  It also determines what the expectations are for the clinical evaluation of your product and what documentation will be required.

 Let’s break down what actually counts—and what doesn’t.

What Is a Medical Device?

According to both the FDA and EU MDR, a medical device is any product (including software!) that is:

“Intended by the manufacturer to diagnose, prevent, monitor, treat, or alleviate disease or injury—or to affect the structure or function of the body.”

That includes everything from physical tools (like tongue depressors) to complex software systems (like AI diagnostic tools).

Important: Even if your product looks like harmless software, if it directs medical decisions or supports diagnosis—it may be regulated.

SaMD and AI Tools: Are You on the Hook?

 

Many digital health founders assume software = low risk. But if your software is involved in clinical decision-making, monitoring health, or triggering medical alerts, regulators see it differently.

Examples of software that are considered medical devices:

  • An app that uses AI to flag skin cancer risk in photos
  • A digital tool that alerts doctors to abnormal EKG readings
  • A remote monitoring platform that adjusts ventilator settings

 

Examples that aren’t:

  • A food journaling app with general health tips
  • A meditation app for reducing stress
  • An AI assistant that auto-fills insurance forms for providers

 

If your product is purely for wellness, administrative use, or lifestyle improvement, you might be off the hook. But as soon as it crosses into diagnostic, therapeutic, or monitoring territory, and is targeted toward disease as opposed to general wellness, it likely qualifies as a regulated medical device.

Why A Medical Device Matters

 

Once your product qualifies as a medical device, everything changes.  Here’s a sample of what you can expect:

Factor

Without Medical Device Status

With Medical Device Status

Legal Restrictions

Few to none

Must comply with FDA or MDR to be marketed

Go-to-Market

Fast and flexible

Requires pre-market approval, notification, or compliance with regulations

Documentation

Optional

Mandatory technical files

Investor Readiness

Lower bar

Stronger with regulatory plan

Risk Class

Doesn’t apply

Determines pathway, cost, and clinical trial requirements

Skipping this determination or assuming you’re exempt can lead to:

  • Product launch delays
  • Fines or legal issues
  • Loss of investor confidence
  • Costly rework of your product and documentation

 

Quick Self-Test: Is Your Product a Medical Device?

 

Ask yourself:

  • Does your software provide medical recommendations, alerts, or treatment suggestions?
  • Does it process health data for anything more than general wellness?
  • Is the intended user a clinician or patient in a medical setting?

 

If the answer to any of these is yes, you’re probably in medical device territory—and should be thinking now about regulatory pathways.

A handy FDA quick check tool can be found here: Digital Health Policy Navigator
An equivalent for the MDR can be found here: Is Your Software a Medical Device?

 

Up Next: FDA vs. MDR – What Founders Need to Know

 

Now that you know what counts as a medical device, the next step is to understand how the U.S. and EU regulate those devices differently.

In the next post, we’ll walk through:

  • The key differences between the FDA and EU MDR
  • Why the EU uses Notified Bodies while the U.S. uses a centralized FDA system
  • What it all means for documentation, timelines, and approval costs

 

Don’t miss it—especially if you’re debating whether to launch first in the U.S. or EU.

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