MAUDE Adverse Event Report: PLEXUS CORP INVOS; OXIMETER, TISSUE SATURATION

Model Number	PMPAMP71
Medical Device Problem Code	Incorrect Measurement (1383)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.
Event or Problem Description
It was reported that prior surgery, the preamplifier was not capturing the data correctly.There was no patient involvement.
Additional Manufacturer Narrative
Additional information: g3, h3, h6 h3 evaluation summary: medtronic conducted an investigation based upon all information received.The device was available for evaluation.Functional testing found that the device displayed a signal.It was reported that prior surgery, the preamplifier was not capturing the data correctly.The reported issue could not be confirmed.The most likely cause could not be established from the information available.The evaluation detected an unreported condition: preamplifier housing was damaged.The issue was resolved by replacing the preamplifier housing.The most likely cause for the additional condition is traced to a component.The manufacturing records for each device are thoroughly reviewed prior to release to ensure that it meets all medtronic quality specifications.Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.

• Brand Name: INVOS
• Common Device Name: OXIMETER, TISSUE SATURATION
• Manufacturer (Section D): PLEXUS CORP; 2400 millbrook dr; buffalo grove IL 60089 4698
• Manufacturer (Section G): PLEXUS CORP; 2400 millbrook dr; buffalo grove IL 60089 4698
• Manufacturer Contact: mike bocchino ; 8200 coral sea st ne; mounds view, MN 55112-4391 ; 8006464633
• MDR Report Key: 22668841
• Report Number: 2936999-2025-00400
• Device Sequence Number: 3892644
• Product Code: MUD
• UDI-Device Identifier: 10884521810112
• UDI-Public: 10884521810112
• Combination Product (Y/N): N
• Initial Reporter Country: SP
• PMA/510(K) Number: K182868
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Foreign
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 08/27/2025

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: PMPAMP71
• Device Catalogue Number: PMPAMP71
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 07/28/2025
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 07/21/2025
• Supplement Date Received by Manufacturer: 08/21/2025
• Initial Report FDA Received Date: 07/30/2025
• Supplement Report FDA Received Date: 08/27/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• 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