Z-2435-2021Class II

Nihon Kohden NKV-550 Ventilator, REF: NKV-550-U, CE 0344, UDI: (01) 00843685100012 The Nihon Kohden NKV-550...

Name: Z-2435-2021 Nihon Kohden NKV-550 Ventilator, REF: NKV-550-U, CE 0344, UDI: (01) 00843685100012 The Nihon Kohden NKV-550...
Creator: Nihon Kohden Orangemed, Inc
Published: 2021-07-20
License: https://open.fda.gov/license/

Nihon Kohden Orangemed, LLC / initiated 2021-07-20 / Terminated / root cause: manufacturing process

FDA source

NIHON KOHDEN ORANGEMED, INC began a recall of Nihon Kohden NKV-550 Ventilator, REF: NKV-550-U, CE 0344, UDI: (01) 00843685100012 The Nihon Kohden NKV-550 Series Ventilator System is intended to provide... on 2021-07-20. FDA classified it as Class II and gives the reason as "Potential defective gas inlet pressure regulator within ventilator which could result in gas releasing noise from the bottom of the ventilator, a High Air/O2 Inlet Pressure alarm, a High/Low O2 alarm, or could not pass...". As of 2026-09-10, the recall status on record is Terminated, and MDM tags the root cause as manufacturing process.

Recall record

Recall number: Z-2435-2021
Classification: Class II
Status: Terminated
Initiated: 2021-07-20
Posted: 2021-09-08
Terminated: 2023-04-21
Recalling firm: Nihon Kohden Orangemed, LLC
Product: Nihon Kohden NKV-550 Ventilator, REF: NKV-550-U, CE 0344, UDI: (01) 00843685100012 The Nihon Kohden NKV-550 Series Ventilator System is intended to provide continuous ventilation for adult, pediatric and neonatal patients who require invasive or noninvasive respiratory support.
Product code: CBK Ventilator, Continuous, Facility Use
Reason for recall: Potential defective gas inlet pressure regulator within ventilator which could result in gas releasing noise from the bottom of the ventilator, a High Air/O2 Inlet Pressure alarm, a High/Low O2 alarm, or could not pass device Check prior to use.
Root cause tag: manufacturing process
FDA root cause: Nonconforming Material/Component
Action: The firm Nihon Kohden OrangeMed, Inc., sent an "URGENT-Medical Device Correction Recall Safety Notice" letter to its customers on July 26, 2021. The letter describes the product, issues and actions to be taken. The customers were instructed to do the following prior to actions being implemented by the manufacturer: 1. Pass this notice on to all those who need to be aware within your organization and to any organization where the affected devices have been transferred. 2. Perform Device Check and Circuit Check as instructed in the NKV-550 ventilator Operator s Manual. A defective regulator can be identified during the Device Check and Circuit Check. 3. If the gas outlet from the hospital wall has an individually adjustable pressure regulator, adjust the outlet pressure to 16 psi for the air and O2 gases at the NKV-550 ventilator. This will allow the ventilator not to depend on its internal regulators to regulate the gas pressure. 4. If the ventilator has a failed internal regulator, remove the ventilator from service and contact the manufacturer or your local representative of the manufacturer. 5. Please complete the attached acknowledgement form and return to [email protected] within 5 days of receipt. Please review and distribute the information with your staff members who need to be aware of the contents of this communication. Please retain a copy of this notice and include it with the Operator s Manual of this device. For further information, please contact your local representative of the manufacturer or email the manufacturer at [email protected]. Telephone (Monday through Friday, 8:00 am to 5:00 pm, Pacific Time) Main Office: +1 (949) 502-6448 Customer Service: Ext: 7101 Technical Support: Ext. 7102 Clinical Support: Ext. 7103
Quantity in commerce: 1,999 units
Distribution: Worldwide Distribution: US (nationwide) to states of: AZ, CA, NY, MA, VT, LA, DC, PA, FL, UT and OUS (countries) of: Brazil, Japan, Ireland, Poland, Scotland, Germany, Kazakhstan, Spain, Slovenia, Germany/Bulgaria, Russia, India, Palestine, Libya, Jordan Kuwait, Lebanon, Syria, Turkey, South Africa, United Arab Emirates, Mexico, Colombia, Peru, Costa Rica, Barbados, Ecuador, Bahamas, Bolivia, St Kitts & Nevis, St. Martin, Chile, Thailand, Laos, Philippines, Malaysia, Nepal and United Kingdom.
Product codes and lots: All serial numbers between NKV5502019xxxx - NKV5502112xxxx and the following serial numbers below: NKV55019270055, NKV55019370098R, NKV55019430125R, NKV55019470156R, NKV55019470160, NKV55020130200, NKV55020140213R, NKV55020140226R, NKV55020140229, NKV55020150241, NKV55020150252, NKV55020160268, NKV55020160276, NKV55020160277, NKV55020160292R, NKV55020160296, NKV55020160297, NKV55020160304, NKV55020160307, NKV55020160308, NKV55020160310, NKV55020160312, NKV55020170317, NKV55020170318, NKV55020170325, NKV55020170335, NKV55020170336, NKV55020170341, NKV55020170342, NKV55020170343, NKV55020170346, NKV55020170347, NKV55020170349, NKV55020170350, NKV55020170352, NKV55020170354, NKV55020170357, NKV55020170360, NKV55020180365, NKV55020180366, NKV55020180369, NKV55020180370, NKV55020180371, NKV55020180372, NKV55020180373, NKV55020180374, NKV55020180375, NKV55020180376, NKV55020180378, NKV55020180379, NKV55020180381, NKV55020180383, NKV55020180384, NKV55020180385, NKV55020180387, NKV55020180391, NKV55020180392, NKV55020180396, NKV55020180397, NKV55020180398, NKV55020180399, NKV55020180400, NKV55020180401, NKV55020180402, NKV55020180403, NKV55020180405, NKV55020180406, NKV55020180408, NKV55020180409, NKV55020180410, NKV55020180411, NKV55020180412, NKV55020180413

Enforcement reports

One row per recalled product line

FDA enforcement reports joined to recall event Z-2435-2021
Recall number	Class	Status	Voluntary or mandated	Report date	Classified
Z-2435-2021	Class II	Terminated	Voluntary: Firm initiated	2021-09-15	2021-09-08

Product code CBK

MDM coverage of this record lists here, newest first.

About this record

Sourced from the FDA device recall database and the FDA enforcement reports, both ingested from openFDA. The recall record supplies the product, the reason and the product code; the enforcement report supplies the classification. The two datasets are exported by FDA on different days, and the date above is the older of the two, so nothing on this page is newer than it says.

MDM adds the root cause tag, derived from FDA’s own root cause text, and the cross-links to the product code, the clearances named on the record and MDM coverage. Where a recall has not been joined to an enforcement report, no classification is shown.

Data as of 2026-09-30, the FDA export date for this dataset. Page last changed 2026-09-05. View this recall on fda.gov (opens on fda.gov)