The customer reported being unable to review data on this central nurse's station (cns) for their tele.Technical support (ts) had the customer look at the stored and displayed wave setting and found out that no matter what, lead ii was not showing at all.The customer was only able to display trace 1 and lead i, which was not being used as the analysis lead.The customer will send in the transmitter unit to be exchanged.There was no patient injury 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 fields contain no information (ni), as attempts to obtain information were made, but not provided: a2 - a6 attempt # 1: 12/29/2023 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Attempt # 2: 01/10/2024 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Attempt # 3 01/15/2024 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.B6 attempt # 1: 12/29/2023 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Attempt # 2: 01/10/2024 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Attempt # 3 01/15/2024 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.B7 attempt # 1: 12/29/2023 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Attempt # 2: 01/10/2024 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Attempt # 3 01/15/2024 a phone call was made in an attempt to gather patient and device information; a voice mail was left for cathy to call me back with this information as well an email address.Additional model information: d10 concomitant medical device: the following device was used in conjunction with the zm transmitter: cns: model #: pu-681ra.Serial #: 1309.Device manufacturer date: 03/03/2020.Unique identifier (udi) #: (b)(4).Returned to nihon kohden: no.
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