MAUDE Adverse Event Report: Nihon Kohden Corporation PU-681RA; Central Monitoring System

Model Number	PU-681RA
Medical Device Problem Code	Unintended Application Program Shut Down (4032)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/20/2026
Type of Reportable Event	Malfunction
Event or Problem Description
The biomedical engineer (bme) reported that the central nurse station (cns) unexpectedly powered down/rebooted, resulting in loss of historical patient data.No reports of patient harm.
Additional Manufacturer Narrative
The biomedical engineer (bme) reported that the central nurse station (cns) unexpectedly powered down/rebooted, resulting in loss of historical patient data.No reports of patient harm.(b)(6) continues to investigate the reported event.(b)(6) will submit a supplemental report in accordance with 21 cfr section 803.56 when additional information becomes available.Additional device information: d10 concomitant medical device: the following device was used in conjunction with the cns: uninterruptible power supply (ups) ametek powervar model #:50042-77r (abce422-11med) serial #: (b)(6) device manufacturer data: 3rd party device unique identifier (udi) #: na returned to (b)(6): not returned.

• Brand Name: PU-681RA
• Common Device Name: Central Monitoring System
• Manufacturer (Section D): Nihon Kohden Corporation; attn: shama mooman; 1-31-4 nishiochia; shinjuku-ku, tokyo 161-8 560; JA 161-8560
• Manufacturer (Section G): Nihon Kohden Tomioka Corporation; attn: shama mooman; 1-1 tajino; tomioka city, gunma 370-2 314; JA 370-2314
• Manufacturer Contact: shama mooman ; seibu bldg 2, 4th floor 1-11-2; kusunokidai tokorozawa, saitama 359-8-580 ; JA 359-8580
• MDR Report Key: 50772773
• Report Number: 8030229-2026-07090
• Device Sequence Number: 18513735
• Product Code: MHX
• UDI-Device Identifier: 04931921131640
• Combination Product (Y/N): N
• Initial Reporter State: MO
• Initial Reporter Country: US
• PMA/510(K) Number: K102376
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: User Facility
• Initial Reporter Occupation: Biomedical Engineer
• Type of Report: Initial
• Report Date (Section B): 09/15/2026

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: PU-681RA
• Device Catalogue Number: PU-681RA
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/20/2026
• Initial Report FDA Received Date: 09/15/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/09/2020
• 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
• Usage of Device: Reuse
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: UPS.
• Patient Sex: Unknown