Cassie

FDA 510(k) K252628 · Wesper, Inc.

Substantially Equivalent

510(k) numberK252628

Submission

Device name
Cassie
Applicant
Wesper, Inc.
Long Island City, NY, US
Received
August 20, 2025
Decision date
April 27, 2026
Decision
Substantially Equivalent (SESE)
Type
Traditional 510(k)
Summary
510(k) summary available from FDA

Official FDA 510(k) record

Device classification

Product code
MNR – Ventilatory Effort Recorder
Device class
Class II (moderate risk)
Regulation
21 CFR 868.2375
Specialty
Anesthesiology

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K253148RX-1 SleepMNR · Traditional Vivaquant, Inc. Dba Rhythm Express06/22/2026SE
K252497Sansa HsatMNR · Traditional Huxley Medical12/10/2025SE
K250882Sansa HsatMNR · Traditional Huxley Medical10/29/2025SE
K250460WatchPAT400 (WP400)MNR · Traditional Itamar Medical , Ltd.09/05/2025SE
K252383Somfit DMNR · Special Compumedics Limited08/28/2025SE
K243220Onera STS 2 (ONERA STS 2)MNR · Traditional Onera B.V.07/03/2025SE
K242224Happy Health Home Sleep TestMNR · Traditional Happy Health, Inc.06/18/2025SE
K243092AcuPebble Ox (200)MNR · Traditional Acurable Limited03/19/2025SE

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Questions and answers

When was Cassie cleared by the FDA?

Cassie (K252628) received a 510(k) decision of Substantially Equivalent on April 27, 2026, 250 days after the submission was received.

What is the product code of K252628?

The FDA product code is MNR – Ventilatory Effort Recorder, a Class II (moderate risk) device regulated under 21 CFR 868.2375.