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); Inappropriate or Unexpected Reset (2959)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/26/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Nihon kohden orangemed llc will submit a supplemental report if additional information becomes available.
Event or Problem Description
During patient use, the respiratory therapist observed that the ventilator touchscreen was completely black, with no graphics or display information visible.Despite the blank screen, the ventilator continued to operate and deliver breaths to the patient.The screen lock button was illuminated but was non-responsive to touch input.There was no patient harm, and the patient was transferred to another nkv-440 ventilator.
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: 24338889
• Report Number: 3014631252-2026-00018
• Device Sequence Number: 9791165
• Product Code: CBK
• UDI-Device Identifier: 00843685100166
• UDI-Public: (01)00843685100166(11)251022
• Combination Product (Y/N): N
• Initial Reporter State: MO
• Initial Reporter Country: US
• 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: Administrator/Supervisor
• Type of Report: Initial,Followup
• Report Date (Section B): 04/10/2026

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?: Device Returned to Manufacturer
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 01/30/2026
• Supplement Date Received by Manufacturer: Not provided
• Initial Report FDA Received Date: 02/13/2026
• Supplement Report FDA Received Date: 04/11/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/22/2025
• 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: 73 YR
• Patient Sex: Male
• Patient Weight: 59 KG
• Patient Ethnicity: Hispanic