MAUDE Adverse Event Report: SMITH & NEPHEW, INC. CONTROL UNIT, DYONICS 25; ARTHROSCOPE

Catalog Number	7211010
Medical Device Problem Code	Increase in Pressure (1491)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/25/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
H11: internal complaint reference number: (b)(4).H2: h3, h6: this complaint was opened by smith+nephew to document a product problem associated with a smith+nephew device.The reported problem relates to known risks with the device itself or with its use that are appropriately documented in our risk files.Smith+nephew will continue to monitor trends in accordance with our post-market surveillance process and take necessary action as required if anticipated severity and/or occurrence rates are exceeded.Smith+nephew has no reason to suspect that the product failed to meet any specifications at the time of manufacture.Based on our review of all currently available information, we are unable to identify a definitive root cause.However, as the use of our product cannot be excluded as a potential cause or contributory factor to the reported issue, we are submitting this report in accordance with applicable regulations.If additional investigative findings or information becomes available that alters the conclusions of this report, a follow-up report will be submitted as required.
Event or Problem Description
It was reported that one (1) dyonics 25 control unit had a variation in pressure, suspecting an issue with the pressure sensor.The pressure was higher than intended.As this was noticed upon inspection, there was no patient involvement.
Additional Manufacturer Narrative
H3, h6: a device deficiency was not identified, and the root cause of the reported event could not be determined since the device was not returned for evaluation.An analysis of the customer provided image found the rear side of a dyonics 25 control unit, the ref and serial numbers can be seen and matches the reported information.No functional issues can be determined through this evaluation.A review of device records showed there were no indications to suggest that the product did not meet manufacturing specifications upon release for distribution.A complaint history review found similar reported events.A risk management review found that the reported failure and/or harm was documented appropriately, and there were no indications to suggest the anticipated risk is not adequate.Please refer to the instructions for use for precautions and warnings related to the use of the device.Based on this investigation, the need for corrective action is not indicated.If any additional information related to this event is received in the future, this investigation will be reopened for assessment.
Additional Manufacturer Narrative
H11: internal complaint reference: (b)(4).H3, h6: the reported device was received for evaluation.A visual inspection found that latchkeeper is worn out.A functional evaluation found that transducers are out of tolerance.An analysis of the customer provided image found the rear side of a dyonics 25 control unit, the ref and serial numbers can be seen and matches the reported information.No functional issues can be determined through this evaluation.A review of device records showed there were no indications to suggest that the product did not meet manufacturing specifications upon release for distribution.A complaint history review found similar reported events.A risk management review found that the reported failure and/or harm was documented appropriately, and there were no indications to suggest the anticipated risk is not adequate.The root cause was associated with a component failure.Factors which could have contributed to the identified malfunction, include a defective pressure transducer.Based on this investigation, the need for corrective action is not indicated.

• Brand Name: CONTROL UNIT, DYONICS 25
• Common Device Name: ARTHROSCOPE
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 76 s. meridian ave.; oklahoma city OK 73107
• Manufacturer (Section G): SMITH & NEPHEW, INC.; 76 s. meridian ave.; oklahoma city OK 73107
• Manufacturer Contact: holly topping ; 1450 brooks rd.; memphis, TN 38116 ; 5123913905
• MDR Report Key: 24132540
• Report Number: 1643264-2026-00027
• Device Sequence Number: 10387192
• Product Code: HRX
• UDI-Device Identifier: 03596010543554
• UDI-Public: 3596010543554
• Combination Product (Y/N): N
• Initial Reporter Country: TC
• PMA/510(K) Number: K171794
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Biomedical Engineer
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 05/19/2026

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 Catalogue Number: 7211010
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 12/26/2025
• Supplement Date Received by Manufacturer: 02/18/2026; 05/18/2026
• Initial Report FDA Received Date: 01/21/2026
• Supplement Report FDA Received Date: 02/23/2026; 05/19/2026
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• 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