Browse hierarchy: [Anesthesiology (AN)](/submissions/AN) → [Subpart C — Monitoring Devices](/submissions/AN/subpart-c%E2%80%94monitoring-devices) → [21 CFR 868.2340](/submissions/AN/subpart-c%E2%80%94monitoring-devices/868.2340) → CAX — Flowmeter, Tube, Thorpe, Back-Pressure Compensated # CAX · Flowmeter, Tube, Thorpe, Back-Pressure Compensated _Anesthesiology · 21 CFR 868.2340 · Class 1_ **Canonical URL:** https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX ## Overview - **Product Code:** CAX - **Device Name:** Flowmeter, Tube, Thorpe, Back-Pressure Compensated - **Regulation:** [21 CFR 868.2340](/submissions/AN/subpart-c%E2%80%94monitoring-devices/868.2340) - **Device Class:** 1 - **Review Panel:** [Anesthesiology](/submissions/AN) ## Identification A compensated thorpe tube flowmeter is a device intended for medical purposes that is used to control and measure gas flow rate accurately. The device includes a vertically mounted tube, with the outlet of the flowmeter calibrated to a reference pressure. ## Classification Rationale Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 868.9. ## Recent Cleared Devices (20 of 24) Showing 20 most recent of 24 cleared devices. | Record | Device Name | Applicant | Decision Date | Decision | | --- | --- | --- | --- | --- | | [K923781](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K923781.md) | MXR-2000 FLOWMETER | Porter Instrument Co., Inc. | Jun 10, 1993 | SESE | | [K910316](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K910316.md) | OHMEDA - LOW FLOW FLOWMETER | Ohmeda Medical | Apr 12, 1991 | SESE | | [K884973](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K884973.md) | FR6000 FLOWMETER | Key Instruments | Jan 17, 1989 | SESE | | [K872718](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K872718.md) | SERIES D FLOWMETER | Puritan Bennett Corp. | Aug 5, 1987 | SESE | | [K871452](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K871452.md) | CLASSIC (TM) 200 OXYGEN FLOWMETER | The Timeter Group | Jun 22, 1987 | SESE | | [K862797](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K862797.md) | AIRCO 2000 SERIES FLOWMETERS | Airco, Inc. | Aug 8, 1986 | SESE | | [K854067](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K854067.md) | SELECT FLOWMETER | Precision Medical, Inc. | Oct 29, 1985 | SESE | | [K851288](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K851288.md) | OXYGEN DELIVERY MEASURING DEVICE | Bar-Dix, Inc. | Sep 3, 1985 | SESE | | [K850559](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K850559.md) | PRESSURE RELIEF ADAPTOR | Precision Medical, Inc. | Apr 25, 1985 | SESE | | [K850560](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K850560.md) | FLOWMETER, BACKPRESSURE COMPENSATED, THORPE TUBE | Precision Medical, Inc. | Apr 17, 1985 | SESE | | [K834260](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K834260.md) | RECON-2 FLOW CONTROLLER | Precision Metering, Inc. | Jan 10, 1984 | SESE | | [K812419](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K812419.md) | PRESET FLOWMETER | Timeter Instrument Corp. | Sep 21, 1981 | SESE | | [K812183](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K812183.md) | TIMETER-PRODUCED PURITAN BENNETT AIR ADP | Timeter Instrument Corp. | Aug 18, 1981 | SESE | | [K812128](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K812128.md) | RECON 1 | Precision Metering, Inc. | Aug 18, 1981 | SESE | | [K802659](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K802659.md) | RESPIRATORY THERAPY FLOWMETER | Design & Manufacturing Consultants | Nov 12, 1980 | SESE | | [K802311](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K802311.md) | MO8 OXYGEN FLOWMETER | Timeter Instrument Corp. | Oct 23, 1980 | SESE | | [K791900](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K791900.md) | M015 OXYGEN & MA15 AIR | Timeter Instrument Corp. | Oct 11, 1979 | SESE | | [K791648](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K791648.md) | MODEL 54 FLOWMETER BACK-PRESSURE TUBE | Harris Calorific | Sep 17, 1979 | SESE | | [K791220](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K791220.md) | FLOWMETER, BACK PRESSURE COMPENSATED, | Timeter Instrument Corp. | Aug 3, 1979 | SESE | | [K791017](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX/K791017.md) | FLOW LIMITER | Timeter Instrument Corp. | Jul 3, 1979 | SESE | ## Top Applicants - Timeter Instrument Corp. — 6 clearances - Precision Medical, Inc. — 3 clearances - Precision Metering, Inc. — 2 clearances - Airco, Inc. — 1 clearance - Bar-Dix, Inc. — 1 clearance --- **Source:** [https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX](https://fda.innolitics.com/submissions/AN/subpart-c%E2%80%94monitoring-devices/CAX) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. 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