MAUDE Adverse Event Report: NIHON KOHDEN CORPORATION ZM-520PA; TRANSMITTER

Model Number	ZM-520PA
Medical Device Problem Codes	Overheating of Device (1437); Battery Problem (2885)
Health Effect - Clinical Codes	No Known Impact Or Consequence To Patient (2692); No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/03/2020
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The customer reported that their transmitter battery was shorting if they place the battery inside of the transmitter with the negative end first.The customer also reported that the spring on the negative contact is touching the side of the battery, causing the battery to short and overheat.No harm or injury 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.The following field contains no information (ni), as attempts to obtain information were made, but not provided: concomitant medical products.
Event or Problem Description
The customer reported that their transmitter battery was shorting if they place the battery inside of the transmitter with the negative end first.
Additional Manufacturer Narrative
Details of complaint: the customer reported that their transmitter battery was shorting if they placed the battery inside of the transmitter with the negative end first.The customer also reported that the spring on the negative contact was touching the side of the battery, causing the battery to short and overheat.No harm or injury was reported.Service requested / performed: troubleshooting.Investigation summary: a previous investigation under irc-nka300097945 identified that the incorrect insertion of the battery may cause the battery spring terminal to break the coating of the battery, leading to short circuit and eventually heating of the device.The most probable cause of the issue is improper battery insertion.The operator's manual provides instruction on how to properly insert the batteries on the device.Furthermore, a design change was made to prevent overheating by short circuit caused by improper insertion of batteries (b)(4).The design change has been applied to the following (b)(6) or later a design change has been implemented to the product to prevent short circuit of the battery during battery insertion.The complaint device was manufactured prior to this change.Additional information: b4 date of this report.D8 was this device serviced by a third party? g3 date received by manufacturer.G6 type of report.H2 if follow-up, what type? h6 event problem and evaluation codes.H10 additional manufacturer narrative.
Event or Problem Description
The customer reported that their transmitter battery was shorting if they placed the battery inside of the transmitter with the negative end first.

• Brand Name: ZM-520PA
• Common Device Name: 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 ; safety mgmt dept, quality mgmt; seibu bldg 2, 4th floor 1-11-2; kusunokidai tokorozawa, saitama 359-8-580 ; JA 359-8580
• MDR Report Key: 9857827
• Report Number: 8030229-2020-00168
• Device Sequence Number: 2787164
• Product Code: DRT
• UDI-Device Identifier: 04931921115077
• UDI-Public: 04931921115077
• Combination Product (Y/N): N
• Initial Reporter State: PA
• 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: Health Professional,User Facility
• Initial Reporter Occupation: Biomedical Engineer
• Type of Report: Initial,Followup
• Report Date (Section B): 10/04/2022
• Report Date (Section F): 03/19/2020

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-520PA
• Device Catalogue Number: ZM-520PA
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: Yes
• Distributor Facility Aware Date: 03/03/2020
• Device Age: 14 MO
• Event Location: Hospital
• Date Report to Manufacturer: 03/19/2020
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 03/03/2020
• Supplement Date Received by Manufacturer: 09/23/2022
• Initial Report FDA Received Date: 03/19/2020
• Supplement Report FDA Received Date: 10/04/2022
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 12/22/2018
• 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
• Date Report Sent to FDA: 03/19/2020