Cleared Traditional

K221531 - ClotTriever Thrombectomy System

K221531 is an FDA 510(k) clearance for ClotTriever Thrombectomy System, manufactured by Inari Medical, Inc.. The device is a Class 2 Cardiovascular device with product code QEW cleared through the Traditional 510(k) pathway after a 256-day FDA review.

K221531 · Inari Medical, Inc. · Cardiovascular device
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Feb 2023
Decision
256d
Days
Class 2
Risk

K221531 is an FDA 510(k) clearance for the ClotTriever Thrombectomy System. Classified as Peripheral Mechanical Thrombectomy With Aspiration (product code QEW), Class II - Special Controls.

Submitted by Inari Medical, Inc. (Irvine, US). The FDA issued a Cleared decision on February 6, 2023 after a review of 256 days - an extended review cycle.

This device falls under the Cardiovascular FDA review panel, regulated under 21 CFR 870.5150 - the FDA cardiovascular device oversight framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Cardiovascular review framework, consistent with the majority of Class II 510(k) submissions.

View all Inari Medical, Inc. devices

FDA 510(k) Submission Details - K221531

510(k) Number K221531 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 26, 2022
Decision Date February 06, 2023
Days to Decision 256 days
Submission Type Traditional
Review Panel Cardiovascular (CV)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
131d slower than avg
Panel avg: 125d · This submission: 256d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

QEW Device Classification - Class 2, Special Controls

Product Code QEW Peripheral Mechanical Thrombectomy With Aspiration
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 870.5150
Definition To Mechanically Disrupt Thrombus And/or Debris Prior To Removal From The Peripheral Vasculature Through Aspiration.
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Cardiovascular devices follow this clearance model.

Regulatory Peers - QEW Peripheral Mechanical Thrombectomy With Aspiration

All 131
Devices cleared under the same product code (QEW) and FDA review panel - the closest regulatory comparables to K221531.
Excipio LV Thrombectomy Device
K223897 · Contego Medical, Inc. · Feb 2023
Cobra Catheter System
K223891 · Endovascular Engineering · Feb 2023
Indigo® Aspiration System – Lightning Bolt Aspiration Tubing
K223186 · Penumbra, Inc. · Feb 2023
Artix BG
K223000 · Inari Medical · Jan 2023
Indigo Aspiration System - Lightning Flash
K222358 · Penumbra, Inc. · Dec 2022
WOLF Thrombectomy™ SmartClaw Catheter
K221391 · Devoro Medical, Inc. · Nov 2022