The Complizen blog

Notes from the FDA frontier.

153 posts and counting — every CDRH guidance, warning letter, and explainer worth your time.

Showing 1–24 of 31 · Pathways
Pathways
Apr 25, 2026 · ~8 MIN

What Is My Medical Device Classification? FDA Medical Device Classification Class I, II, III Explained

Understand FDA classification for medical devices with our comprehensive guide. Discover how FDA classification impacts your device's pathway.

Pathways
510(k)
Oct 21, 2025 · ~8 MIN

FDA Third-Party Review (3P510k): The Overlooked Route to Faster 510(k) Clearance (Complete Guide)

Learn how the FDA’s Third-Party Review program can speed up 510(k) clearance for eligible devices.

Pathways
Aug 21, 2025 · ~8 MIN

FDA Compliance for Medical Devices: Complete Beginner's Guide

A practical step by step path to FDA compliance: classify your device, pick the pathway, use eSTAR, build QMS to QMSR, register/list, label with UDI, and meet MDR reporting.

Pathways
Aug 20, 2025 · ~8 MIN

What are Combination Products? FDA Medical Device Guide

Learn what combination products are, examples, FDA classification rules, and PMOA determination. Avoid the costly mistakes that derail medical device startups.

Pathways
Aug 20, 2025 · ~8 MIN

What are Combination Products? FDA Medical Device Guide

Learn what combination products are, examples, FDA classification rules, and PMOA determination. Avoid the costly mistakes that derail medical device startups.

Pathways
Aug 14, 2025 · ~8 MIN

Do I Need FDA Approval, Clearance, or Exemption? Medical Device Guide

Determine if your medical device needs FDA approval, clearance, or exemption. Save time and money with the right regulatory pathway. Complete decision guide.

Pathways
Jul 28, 2025 · ~8 MIN

FDA Complete Guide: Everything Medical Device Companies Need to Know

Unlock the secrets to FDA approval just with our comprehensive guide. Master FDA strategies to accelerate medtech success and gain market edge.

Pathways
Jul 28, 2025 · ~8 MIN

FDA Complete Guide: Everything Medical Device Companies Need to Know

Unlock the secrets to FDA approval just with our comprehensive guide. Master FDA strategies to accelerate medtech success and gain market edge.

Pathways
Jul 21, 2025 · ~8 MIN

FDA Medical Device Process: Complete Pathway Guide

Navigate the complex FDA Medical Device Approval process with our 2025 Pathway Guide. Discover key strategies for Medical Device Approval success.

Pathways
Jul 15, 2025 · ~8 MIN

FDA Medical Device Classification: Class I, II, III Explained

Complete guide to FDA device classes I, II & III. Learn classification criteria, regulatory pathways, examples & requirements.

Pathways
Jul 11, 2025 · ~8 MIN

FDA Cleared vs FDA Approved vs FDA Granted: Complete Guide

Discover the crucial differences between FDA Cleared vs FDA Approved vs FDA Granted in our Complete Guide. Avoid costly compliance mistakes.

Pathways
Jul 10, 2025 · ~8 MIN

What Is FDA STeP Program (Safer Technologies Program)? Complete Guide

Discover the FDA STeP program, a fast-track pathway for medical devices focusing on safety innovations. Learn how FDA STeP can expedite your device approval.

Pathways
Jul 1, 2025 · ~8 MIN

Humanitarian Device Exemption (HDE): Complete FDA Guide

Learn FDA's Humanitarian Device Exemption (HDE) pathway for rare disease devices affecting ≤8,000 patients. Complete guide to HUD designation, profit restrictions & IRB requirements.

Pathways
Jul 1, 2025 · ~8 MIN

Humanitarian Device Exemption (HDE): Complete FDA Guide

Learn FDA's Humanitarian Device Exemption (HDE) pathway for rare disease devices affecting ≤8,000 patients. Complete guide to HUD designation, profit restrictions & IRB requirements.

Pathways
Jun 26, 2025 · ~8 MIN

What Is an IDE? FDA Investigational Device Exemption Complete Guide

Learn when you need FDA Investigational Device Exemption (IDE) for clinical studies. Complete guide to significant risk vs nonsignificant risk devices & approval process.

Pathways
Jun 26, 2025 · ~8 MIN

What Is an IDE? FDA Investigational Device Exemption Complete Guide

Learn when you need FDA Investigational Device Exemption (IDE) for clinical studies. Complete guide to significant risk vs nonsignificant risk devices & approval process.

Pathways
Jun 25, 2025 · ~8 MIN

What Is FDA's Breakthrough Devices Program? Complete Guide

FDA's Breakthrough Devices Program expedites review by 6-12 months for qualifying medical devices. Learn eligibility requirements, benefits & application strategy.

Pathways
Jun 25, 2025 · ~8 MIN

What Is FDA's Breakthrough Devices Program? Complete Guide

FDA's Breakthrough Devices Program expedites review by 6-12 months for qualifying medical devices. Learn eligibility requirements, benefits & application strategy.

Pathways
De Novo
Jun 23, 2025 · ~8 MIN

FDA De Novo Pathway Explained: The Complete Guide

Master the FDA De Novo pathway for novel medical devices. Learn costs, timelines, eligibility criteria & success strategies. Complete guide.

Pathways
PMA
Jun 20, 2025 · ~8 MIN

Pre-market Approval (PMA) Explained: The Complete Guide

Learn what PMA premarket approval is, when medical devices need PMA, and how the FDA approval process works. Complete guide.

Pathways
510(k)
Jun 19, 2025 · ~8 MIN

FDA 510(k) Clearance Explained: How It Works (Complete Guide)

Learn about FDA 510(k) clearance and how it works. Our complete guide simplifies the FDA 510(k) process for medical device approval.

Pathways
510(k)
Jun 12, 2025 · ~8 MIN

510(k) vs De Novo vs PMA: How to Choose the Right Pathway Complete Guide

Confused between 510(k), De Novo, or PMA? This guide breaks down each FDA pathway—timelines, costs, risks, and how to choose the right one.

Pathways
Nov 26, 2024 · ~8 MIN

STeP for Medical Devices: FDA’s Safer Technologies Program Explained

Learn about the FDA's Safer Technologies Program (STeP) for medical devices, including eligibility, benefits, and application process, to expedite your device's approval.

Pathways
Nov 12, 2024 · ~8 MIN

How Long Can FDA Approval Take? Understanding Timelines for Different FDA Pathways

Learn about FDA approval timelines for medical devices, including average times for 510(k), PMA, and De Novo pathways. Discover factors that impact approval speed and tips to streamline the process.