MAUDE Adverse Event Report: NIHON KOHDEN CORPORATION CNS-9700A; CENTRAL MONITOR SYSTEM

Model Number	CNS-9700A
Medical Device Problem Codes	Display or Visual Feedback Problem (1184); Application Program Problem (2880); Application Program Freezes or Fails to Launch (4031)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/19/2021
Type of Reportable Event	Malfunction
Event or Problem Description
The customer reported that their central nurse's station (cns) is frozen and that they cannot use their mouse or the touchscreen.No harm or injury was reported.
Additional Manufacturer Narrative
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.
Additional Manufacturer Narrative
Details of complaint: the customer reported that the central nurse's station (cns) was frozen, and the mouse and touchscreen were not working.No patient harm was reported.Investigation summary: the report of cns freezing was resolved when the customer performed a hard reset on the cns.As no devices were returned for evaluation relating to this event, the reported issue could not be duplicated nor confirmed.As such, a root cause cannot be determined.The cns freezing is commonly a symptom of failing internal components, commonly the hdds.The hdds are electronic components that may deteriorate through time and may wear from continual use.Possible causes of failure include mechanical failure from improper use/handling, corruption of the files from abnormal shutdowns, viruses, or power issues.Other possible causes of the issue are power surges/interruptions and wear and tear.Any events that involve fluctuations and changes in the voltage such as power outages and generator tests may damage the hdds.Fluid intrusion, dust accumulation, or a lack of maintenance on fans, air intakes, and other components may lead to overheating of the hard drive and subsequent failure.When hard drives fail, this failure can manifest in different ways.There can be an error message (e.G., "hdd access error," "ssd access error," "ssdx error," "threshold breach"), or the device may reboot, display a blue failure screen, or the device screen could "freeze." the unit may sometime then restart, or the device may need to have the hard drive replaced.Sometimes the unit can be rebuilt by the backup disk (i.E., the system has redundant array of independent disks (raid), which puts multiple hard drives together to improve performance).Nk will continue to monitor and trend similar complaints.Due to the age of the device and lack of servicing history, the cns was likely failing due to hdd failure as a result of wear and tear.
Event or Problem Description
The customer reported that the central nurse's station (cns) was frozen, and the mouse and touchscreen were not working.No harm or injury was reported.

• Brand Name: CNS-9700A
• Common Device Name: CENTRAL MONITOR 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; seibu bldg 2, 4th floor 1-11-2; kusunokidai tokorozawa, saitama 359-8-580 ; JA 359-8580
• MDR Report Key: 13030950
• Report Number: 8030229-2021-02135
• Device Sequence Number: 17241902
• Product Code: MHX
• UDI-Device Identifier: 04931921000663
• UDI-Public: 04931921000663
• Combination Product (Y/N): N
• Initial Reporter State: NJ
• Initial Reporter Country: US
• PMA/510(K) Number: K023475
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility
• Initial Reporter Occupation: Biomedical Engineer
• Type of Report: Initial,Followup
• Report Date (Section B): 07/25/2023

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: CNS-9700A
• Device Catalogue Number: MU-971RA
• 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: 11/19/2021
• Supplement Date Received by Manufacturer: 07/25/2023
• Initial Report FDA Received Date: 12/17/2021
• Supplement Report FDA Received Date: 07/25/2023
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 10/04/2010
• 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