MAUDE Adverse Event Report: NIHON KOHDEN ORANGEMED, LLC NIHON KOHDEN NKV-440 VENTILATOR SYSTEM; VENTILATOR, CONTINUOUS, FACILITY USE

Model Number	NKV-440-U
Medical Device Problem Codes	Computer Software Problem (1112); Insufficient Device Problem Information (3190)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/06/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during patient use, the attending nurse noted that the device had been operating normally when the doctor noticed that the touchscreen had gone black.The ventilator continued to ventilate the patient.There was no patient harm, and the patient was placed on another ventilator.The service engineer checked all cables to the mainboard.All of the cables looked normal and were correctly connected.
Additional Manufacturer Narrative
Nihon kohden orangemed llc will submit a supplemental report if additional information becomes available.
Additional Manufacturer Narrative
Evaluation completed.See attached failure investigation summary report.

• Brand Name: NIHON KOHDEN NKV-440 VENTILATOR SYSTEM
• Common Device Name: VENTILATOR, CONTINUOUS, FACILITY USE
• Manufacturer (Section D): NIHON KOHDEN ORANGEMED, LLC; 1800 e. wilshire ave.; santa ana CA 92705
• Manufacturer (Section G): NIHON KOHEN ORANGEMED, LLC; 1800 e. wilshire ave.; santa ana CA 92705
• Manufacturer Contact: sheryl higgins ; 1800 e. wilshire ave.; santa ana, CA 92705 ; 949502644
• MDR Report Key: 23097514
• Report Number: 3014631252-2025-00050
• Device Sequence Number: 15828675
• Product Code: CBK
• UDI-Device Identifier: 00843685100166
• UDI-Public: (01)00843685100166(11)240227
• Combination Product (Y/N): N
• Initial Reporter Country: TH
• PMA/510(K) Number: K222644
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Nurse
• Type of Report: Initial,Followup
• Report Date (Section B): 11/06/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: NKV-440-U
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/22/2025
• Supplement Date Received by Manufacturer: Not provided
• Initial Report FDA Received Date: 09/19/2025
• Supplement Report FDA Received Date: 11/06/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 02/27/2024
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Other
• Patient Age: 23 YR
• Patient Sex: Male
• Patient Weight: 70 KG