MAUDE Adverse Event Report: MASIMO - 15750 ALTON PKWY RADIUS VSM; MONITOR, PHYSIOLOGICAL, PATIENT (WITHOUT ARRHYTHMIA DETECTION OR ALARMS)

Model Number	9037
Medical Device Problem Code	No Audible Alarm (1019)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/01/2026
Type of Reportable Event	Malfunction
Event or Problem Description
The customer reported the radius vsms "fails to alarm low battery." 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.E1: initial reporter zip code exceeded allowable field length, initial reporter zip code is as follows: (b)(6).Health effect impact code: no adverse event; no patient impact.H3 other text: device not returned.
Additional Manufacturer Narrative
Other text: the returned device was evaluated.The device was able to audibly and visually alarm for all enabled parameters for the duration of testing.The device issued a low battery alarm at the moment where the battery charge capacity met the specified threshold.No product performance issues related to the device's alarm system were identified when the device was functionally tested.The device was determined to be functioning as designed.E1.Initial reporter zip code exceeded allowable field length, initial reporter zip code is as follows: (b)(6).Health effect impact code: no adverse event; no patient impact.
Event or Problem Description
The customer reported the radius vsms "fails to alarm low battery." there was no patient impact or consequence reported.

• Brand Name: RADIUS VSM
• Common Device Name: MONITOR, PHYSIOLOGICAL, PATIENT (WITHOUT ARRHYTHMIA DETECTION OR ALARMS)
• 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: 24613952
• Report Number: 3019388613-2026-00098
• Device Sequence Number: 21229046
• Product Code: MHX
• UDI-Device Identifier: 00843997019163
• UDI-Public: (01)00843997019163(11)251013
• Combination Product (Y/N): N
• Initial Reporter Country: CA
• PMA/510(K) Number: K223498
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Initial Reporter Occupation: Biomedical Engineer
• Remedial Action: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 02/19/2026

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: 9037
• 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: 02/19/2026
• Supplement Date Received by Manufacturer: 06/29/2026
• Initial Report FDA Received Date: 03/16/2026
• Supplement Report FDA Received Date: 07/11/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/13/2025
• 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