MAUDE Adverse Event Report: NIHON KOHDEN CORPORATION ZM-531PA; TELEMETRY TRANSMITTER

Model Number	ZM-531PA
Medical Device Problem Code	Output Problem (3005)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/24/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The biomedical engineer (bme) reported that when going into zm view the zm tele shows the patient data from another zm tele instead of the bedside monitor with the correct patient.Reuben called in stating he has 2 zm teles displaying the same patient data from the central nurse's station (cns).He stated he already tried discharging the patients and then readmitting the patients but that did not resolve the issue.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.Additional device information: the following field(s) contains no information (ni), as attempts to obtain information were made, but not provided.D10 concomitant medical device.Attempt #1: 02/25/2025 emailed customer via microsoft outlook for all items under the no information section.No reply was received.Attempt #2: 03/04/2025 emailed customer via microsoft outlook for all items under the no information section.No reply was received.Attempt #3: 03/09/2026 emailed customer via microsoft outlook for all items under the no information section.No reply was received.Central nurse's station: model: ni.Sn: ni.Telemetry transmitter: model: ni.Sn: ni.
Event or Problem Description
The biomedical engineer (bme) reported that when going into zm view the zm tele shows the patient data from another zm tele instead of the bedside monitor with the correct patient.Reuben called in stating he has 2 zm teles displaying the same patient data from the central nurse's station (cns).He stated he already tried discharging the patients and then readmitting the patients but that did not resolve the issue.No patient harm was reported.

• Brand Name: ZM-531PA
• Common Device Name: TELEMETRY TRANSMITTER
• 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: 24574616
• Report Number: 8030229-2026-06282
• Device Sequence Number: 15761133
• Product Code: DRT
• UDI-Device Identifier: 04931921115107
• UDI-Public: (01)04931921115107
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: K043517
• 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: ZM-531PA
• Device Catalogue Number: ZM-531PA
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/24/2026
• Supplement Date Received by Manufacturer: 05/22/2026
• Initial Report FDA Received Date: 03/11/2026
• Supplement Report FDA Received Date: 05/26/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 08/12/2020
• 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: CENTRAL NURSE'S STATION; TELEMETRY TRANSMITTER
• Patient Sex: Unknown