Cleared Special

K033401 - MODIFICATION TO RESQPOD CIRCULATORY ENHANCER (FDA 510(k) Clearance)

Class II Anesthesiology device cleared through the Special 510(k) pathway - typically does not require clinical trials.

Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Nov 2003
Decision
27d
Days
Class 2
Risk

K033401 is an FDA 510(k) clearance for the MODIFICATION TO RESQPOD CIRCULATORY ENHANCER. Classified as Spirometer, Therapeutic (incentive) (product code BWF), Class II - Special Controls.

Submitted by Advanced Circulatory Systems, Inc. (Stoughton, US). The FDA issued a Cleared decision on November 20, 2003 after a review of 27 days - a notably fast clearance cycle.

This device falls under the Anesthesiology FDA review panel, regulated under 21 CFR 868.5690 - the FDA anesthesiology and respiratory device framework. As a Special 510(k), this submission covers a manufacturer modification to an existing cleared device rather than a new device introduction.

Device pattern: Iterative device modification. Low regulatory complexity profile. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.

View all Advanced Circulatory Systems, Inc. devices

Submission Details

510(k) Number K033401 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 24, 2003
Decision Date November 20, 2003
Days to Decision 27 days
Submission Type Special
Review Panel Anesthesiology (AN)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
112d faster than avg
Panel avg: 139d · This submission: 27d
Pathway characteristics
Modification to existing cleared device.

Device Classification

Product Code BWF Spirometer, Therapeutic (incentive)
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 868.5690
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.

Regulatory Peers - BWF Spirometer, Therapeutic (incentive)

All 107
Devices cleared under the same product code (BWF) and FDA review panel - the closest regulatory comparables to K033401.
InSee
K241152 · Tidal Medical Technologies, LLC · Aug 2025
AllPEP
K233855 · Enchant Tek Co. , Ltd. · Feb 2024
LungTrainer (MD2 & MD3)
K221058 · Lung Trainers, LLC · Jul 2023
Breathe+
K222018 · Peep Medical, LLC Dba Go2 Devices · Jun 2023
Hudson RCI Triflo II Incentive Deep Breathing Exerciser
K220565 · Medline Industries, Inc. · Oct 2022