Cleared Traditional

K252628 - CASSIE

K252628 is an FDA 510(k) clearance for CASSIE, manufactured by Wesper, Inc.. The device is a Class 2 Anesthesiology device with product code MNR cleared through the Traditional 510(k) pathway after a 250-day FDA review.

K252628 · Wesper, Inc. · Anesthesiology device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Apr 2026
Decision
250d
Days
Class 2
Risk

K252628 is an FDA 510(k) clearance for the CASSIE. Classified as Ventilatory Effort Recorder (product code MNR), Class II - Special Controls.

Submitted by Wesper, Inc. (Long Island City, US). The FDA issued a Cleared decision on April 27, 2026 after a review of 250 days - an extended review cycle.

This device falls under the Anesthesiology FDA review panel, regulated under 21 CFR 868.2375 - the FDA anesthesiology and respiratory device 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 Anesthesiology review framework, consistent with the majority of Class II 510(k) submissions.

View all Wesper, Inc. devices

FDA 510(k) Submission Details - K252628

510(k) Number K252628 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received August 20, 2025
Decision Date April 27, 2026
Days to Decision 250 days
Submission Type Traditional
Review Panel Anesthesiology (AN)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
110d slower than avg
Panel avg: 140d · This submission: 250d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

MNR Device Classification - Class 2, Special Controls

Product Code MNR Ventilatory Effort Recorder
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 868.2375
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 Anesthesiology devices follow this clearance model.

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All 120
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