MAUDE Adverse Event Report: NIHON KOHDEN CORPORATION PU-621R; CENTRAL MONITORING SYSTEM

Model Number	PU-621R
Medical Device Problem Code	Unintended Application Program Shut Down (4032)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/07/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Details of complaint: the biomedical engineer (bme) reported that the central nurse station (cns) had a blue screen despite multiple attempts at rebooting.They were able to transfer the patient data to a spare cns.Technical support (ts) informed the bme that this cns model has been sunsetted (eol/eos) and since the rebooting did not resolve the issue, recommended they upgrade the cns.The bme requested the eol/eos letters.No patient harm was reported.Investigation summary: the customer reported that a cns (pu-621ra) was displaying a blue screen error.Nk tech support advised the customer to attempt power cycles and informed them that the unit was end of life (eol) and end of support (eos), recommending an upgrade if the issue persisted.The customer transferred patient data to a spare cns and requested end of life documentation.Root cause: could not be determined.No further investigation is required.Additional information: b4 date of this report.G3 date received by manufacturer.G6 type of report.H2 if follow-up, what type?.H6 event problem and evaluation codes.H11 additional manufacturer narrative.
Event or Problem Description
The biomedical engineer (bme) reported that the central nurse station (cns) had a blue screen despite multiple attempts at rebooting.No patient harm was reported.
Event or Problem Description
The biomedical engineer (bme) reported that the central nurse station (cns) had a blue screen despite multiple attempts at rebooting.No patient harm was reported.
Additional Manufacturer Narrative
The biomedical engineer (bme) reported that the central nurse station (cns) had a blue screen despite multiple attempts at rebooting.They were able to transfer the patient data to a spare cns.Technical support (ts) informed the bme that this cns model has been sunsetted (eol/eos) and since the rebooting did not resolve the issue, recommended they upgrade the cns.The bme requested the eol/eos letters.No patient harm was reported.Nihon kohden continues to investigate the reported event.Nihon kohden will submit a supplemental report in accordance with 21 cfr section 803.56 when additional information becomes available.

• Brand Name: PU-621R
• 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: 24756220
• Report Number: 8030229-2026-06365
• Device Sequence Number: 9230156
• Product Code: MHX
• UDI-Device Identifier: 04931921114131
• UDI-Public: (01)04931921114131
• Combination Product (Y/N): N
• 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,Followup
• Report Date (Section B): 05/26/2026

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-621R
• Device Catalogue Number: PU-621RA
• 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: 03/07/2026
• Supplement Date Received by Manufacturer: 05/20/2026
• Initial Report FDA Received Date: 04/01/2026
• Supplement Report FDA Received Date: 05/26/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/13/2016
• 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
• Patient Sex: Unknown