Class I recallOngoing

VDR4 Phasitron Breathing Circuit Models that contain the venturi recall — FDA event 95979

FDA · FDA event 95979 · Posted Jan 23, 2025

Published Jan 23, 2025Updated Oct 8, 2026Source last checked: 2026-10-08 16:03:16 UTC

What happened

Due to internal venturi component getting transiently stuck in the forward position within the breathing circuit and may cause a reduction of amplitude and volume of ventilation.

Who may be affected

People using a product, model, software version, lot, or UDI listed in the affected-products table and official FDA record.
A mention of the device family does not mean every unit is affected. Compare the identifiers on your product with the official source.

What the official notice recommends

On 12/23/2024, the firm sent an "Urgent Medical Device Notification" to customers informing them that due to recently becoming aware through one customer complaint that the venturi component transiently stopped oscillating while in use. The patient experienced a slight desaturation (low oxygen). When the Phasitron is stuck, the system continues to deliver pressures and volumes, but with reduced amplitude. The set values return when the venturi resumes oscillation.
Customers are instructed to: 1. Please review all inventory for impacted lots referenced in the table below. 2. An enhanced Phasitron pre-use check has been developed to evaluate circuits for this issue which replaces the standard pre-use verification until affected products have been replaced at your facility. Please post the instructions provided in Appendix 2 in all areas of your facility. This enhanced pre-use check is to be completed for each new Phasitron breathing circuit in the lots identified below. 3. If product fails the pre-use check found in Appendix 2, DO NOT USE and dispose per your institutional protocol and contact FSCA@sentec.com for product exchange. 4. If a product malfunction is identified during use, please IMMEDIATELY STOP USE of the device and dispose according to your institutional protocol and contact FSCA@sentec.com for product exchange. 5. Complete and Return Acknowledgement form (see Appendix 1) after reviewing and implementing the requested actions by January 31, 2024. 6. After receipt of replacement product: o Dispose remaining product from affected lots per facility protocol.
For any question, email FSCA@sentec.com.

The official notice takes precedence over this summary. Talk to your clinician before changing prescribed therapy.

Affected products and models

This FDA record lists VDR4 Phasitron Breathing Circuit Models that contain the venturi by Percussionaire Corporation.

Products affected by FDA event 95979
Model	Description	Lot / serial range	Manufactured	Status
Z-0960-2025	Z-0960-2025	-Phasitron Kit, VDR, Single Patient, 5pk Model Number - A50094-D-5PK UDI-DI code: 00849436000259 Lot Codes: WO04294 WO04424 WO04764 WO05070 WO05186 WO05460 WO05685 WO05910 WO06388 WO06576 WO06883 WO07095 WO07196 WO07317 WO07405 WO07450 WO07696 - Control Unit Tester Model Number: A51001 VDR4 Lot Codes: WO04750 WO06701 - VDR W/Swivel T Single Patient Phasitron Model Number: PRT 991 Lot Code: WO04733 - VDR4 Humidification Adapter Kit, Case of 10 Model Number: PRT 992 Lot Code: WO045667 - VDR4 Humidification Kit with Cross Tee, Case of 10 Model Number: PRT 993 Lot Codes: WO04745 WO04832 WO04893 WO04893 WO05309 WO06523 WO07080 WO07283	Not provided in the normalized record	Ongoing

Distribution: Worldwide - U.S. Nationwide distribution in the states of AZ, FL, IL, MS, MO, NE, NJ, NY, NC, RI, TX, UT, and WV. The countries of Belgium, Canada, France, Hong Kong, Netherlands, Russia, Switzerland and Turkey.
Units affected: See official FDA record
Category: Ventilators

Timeline

Dec 23, 2024
Recall initiated
Date recorded by the FDA.
Jan 23, 2025
Posted by FDA
The recall event appeared in the FDA source.
Oct 8, 2026
Last checked
MedWatcher last reconciled this record with the openFDA export.

Primary source

U.S. Food and Drug Administration

Identifier: 95979
Published: Jan 23, 2025
Source checked: 2026-10-08 16:03:16 UTC

Official openFDA device-recall record. The FDA source takes precedence over this normalized summary.

View official record

How MedWatcher checks these sources

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VDR4 Phasitron Breathing Circuit Models that contain the venturi recall — FDA event 95979

FDA · FDA event 95979 · Posted Jan 23, 2025

Published Jan 23, 2025Updated Oct 8, 2026Source last checked: 2026-10-08 16:03:16 UTC

Affected products and models

This FDA record lists VDR4 Phasitron Breathing Circuit Models that contain the venturi by Percussionaire Corporation.

Products affected by FDA event 95979
Model	Description	Lot / serial range	Manufactured	Status
Z-0960-2025	Z-0960-2025	-Phasitron Kit, VDR, Single Patient, 5pk Model Number - A50094-D-5PK UDI-DI code: 00849436000259 Lot Codes: WO04294 WO04424 WO04764 WO05070 WO05186 WO05460 WO05685 WO05910 WO06388 WO06576 WO06883 WO07095 WO07196 WO07317 WO07405 WO07450 WO07696 - Control Unit Tester Model Number: A51001 VDR4 Lot Codes: WO04750 WO06701 - VDR W/Swivel T Single Patient Phasitron Model Number: PRT 991 Lot Code: WO04733 - VDR4 Humidification Adapter Kit, Case of 10 Model Number: PRT 992 Lot Code: WO045667 - VDR4 Humidification Kit with Cross Tee, Case of 10 Model Number: PRT 993 Lot Codes: WO04745 WO04832 WO04893 WO04893 WO05309 WO06523 WO07080 WO07283	Not provided in the normalized record	Ongoing

Distribution

Worldwide - U.S. Nationwide distribution in the states of AZ, FL, IL, MS, MO, NE, NJ, NY, NC, RI, TX, UT, and WV. The countries of Belgium, Canada, France, Hong Kong, Netherlands, Russia, Switzerland and Turkey.

Units affected

See official FDA record

Resmed Astral 100/150 Resmed Astral 100/50 recall — FDA event 99304

Due to a Supercapacitor electrolyte leakage on Printed Circuit Board Assembly (PCBA) may damage the charger chip, causing fail-safe state and interruption of ventilation therapy.

FDA · FDA event 99304Posted Jul 28, 2026

Class II recallOngoing

VOCSN+Pro package recall — FDA event 98888

FDA · FDA event 98888Posted Jun 23, 2026

Class I recallOngoing

VOCSN V+Pro package recall — FDA event 98554

FDA · FDA event 98554Posted May 1, 2026

VDR4 Phasitron Breathing Circuit Models that contain the venturi recall — FDA event 95979

Follow VDR4 Phasitron Breathing Circuit Models that contain the venturi

What happened

Who may be affected

What the official notice recommends

Affected products and models

Timeline

VDR4 Phasitron Breathing Circuit Models that contain the venturi recall — FDA event 95979

Follow VDR4 Phasitron Breathing Circuit Models that contain the venturi

What happened

Who may be affected

What the official notice recommends

Affected products and models

Timeline

What happened

Who may be affected

What to do

What the official notice recommends

Affected products and models

Timeline

What happened

Who may be affected

What to do

What the official notice recommends

Affected products and models

Timeline