MAUDE Adverse Event Report: MASIMO - 15750 ALTON PKWY LNCS NEO ADH SENSOR; OXIMETER

Model Number	2329
Medical Device Problem Codes	Incorrect Measurement (1383); Low Readings (2460)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/14/2026
Type of Reportable Event	Malfunction
Event or Problem Description
The customer reported "in ed triage 2 small baby sensor first connected to cable then applied to rt foot on outside and placement was good.The pleth was bad got values pls 74 spo2 75 pi 6.6.Disconnected reconnected no change changed to max sens.No change.Disconnected changed to rt outside hand identical result.Got a new neo sensor placed on same foot by cs not rn same start pleth corrupt suddenly got similar measurement disconnected and disconnected x 2 then got pr 133 spo2 95 correlating with the clinical picture of the patient".There was no patient impact or consequence reported.
Additional Manufacturer Narrative
Other, other text: masimo has reached out to the customer to request the return of the device.The device has not been returned to masimo to allow an analysis to be performed.If the device is returned for evaluation or new information is obtained, a follow up report will be submitted.Health effect impact code: no adverse event; no patient impact.E1.Initial reporter zip code exceeded the maximum allowable characters; zip code is as follows: (b)(6).Other text: product not returned.

• Brand Name: LNCS NEO ADH SENSOR
• Common Device Name: OXIMETER
• Manufacturer (Section D): MASIMO - 15750 ALTON PKWY; 15750 alton pkwy; irvine CA 92618
• Manufacturer (Section G): MASIMO - MEXICALI; industrial vallera de mexicali calzada del oro, no.2001; mexicali, baja california 21600 ; MX 21600
• Manufacturer Contact: lusine boyadzhyan ; 15750 alton pkwy; irvine, CA 92618 ; 9492977167
• MDR Report Key: 25133278
• Report Number: 3019388613-2026-00212
• Device Sequence Number: 8634752
• Product Code: DQA
• UDI-Device Identifier: 10843997000922
• UDI-Public: (01)10843997000922(17)281001(10)25K1R
• Combination Product (Y/N): N
• Initial Reporter Country: CA
• PMA/510(K) Number: K101896
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Remedial Action: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 04/14/2026

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: 2329
• Device Catalogue Number: 2329
• Device Lot Number: 25K1R
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 04/14/2026
• Supplement Date Received by Manufacturer: 05/20/2026
• Initial Report FDA Received Date: 05/10/2026
• Supplement Report FDA Received Date: 06/14/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/31/2025
• 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: Unknown
• Patient Sequence Number: 1
• Patient Sex: Unknown