MAUDE Adverse Event Report: MEDOS INTERNATIONAL SÃ RL CH VELYS ROBOTIC-ASSIST STATION; ORTHOPEDIC STEREOTAXIC INSTRUMENT

Catalog Number	451611001
Medical Device Problem Code	Positioning Failure (1158)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/07/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Product complaint # (b)(4).This report is being submitted pursuant to the provisions of 21 cfr, part 803 (and/or part 4, as applicable).This report may be based on information which has not been investigated or verified prior to the required reporting date.This report does not reflect a conclusion by depuy synthes, or its employees that the report constitutes an admission that the product, depuy synthes, or its employees caused or contributed to the potential event described in this report.Additional narrative: if information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
Event or Problem Description
Problem report: case 1 of 2.It was reported there was an error on placing the viper prime screw via robotic guidance.They received feedback from the monitor that they losed adaptive tracking as indicated by a red screen and red screw - and the screw appears off compared to plan.However, on minor troubleshooting, which entailed removing the screw and resending trajectories the screw seemed to follow the same path and on final xray showed it was accurately placed according to plan.What type of surgery: mis posterior fusion.What step were they on when this issue occurred? screw placement.Was this a robotic or navigation only procedure? robotic assist.Troubleshooting: listed above - requested fse support for the case log to be reviewed.Patient involvement? yes.Were there reports of injuries, medical intervention or prolonged hospitalization? no - minor 3 min delay.Next day of surgery: (b)(6) 2026.All information has been disclosed.No further information was provided.
Additional Manufacturer Narrative
Depuy synthes is submitting this report pursuant to the provisions of 21 cfr, part 803.This report may be based on information which depuy synthes has not been able to investigate or verify prior to the required reporting date.This report does not reflect a conclusion by fda, depuy synthes or its employees that the report constitutes an admission that the device, depuy synthes, or its employees caused or contributed to the potential event described in this report.If the information is unknown, not available or does not apply, the section/field of the form is left blank.H11 additional narrative: investigation summary according to the information received, the issue with the following product: 451611001 sn (b)(6).Error on placing the viper prime screw via robotic guidance.Rep stated the received feedback from the monitor that they loss adaptive tracking as indicated by a red screen and red screw - and the screw appears off compared to plan.However, on minor troubleshooting, which entailed removing the screw and resending trajectories the screw seemed to follow the same path and on final xray showed was accurately placed according to plan.Results received from the engineering team: (uploaded under velys navigation station (b)(6).Investigation summary: this issue was investigated and reviewed by the r&d and tpm team.The investigation confirmed the allegation.The investigation showed that multiple potential causes may have lead to the skiving of the screw implant due to user error in surgical workflow (bone preparation, soft tissue pressure, etc.).There were no defects found with the system and software.The reporter indicated that there was no negative impact to the patient outcome and no patient harm other than the delay to realign the robotic arm and the investigation indicates that the system was behaving properly.This issue will be continued to be monitored through complaint trending as part of post market surveillance.Root cause: the most probable rootcause of this skiving is due a use error, by not following ri instruments stg instructions, and by instrumenting the vertebra without releasing soft tissue pressure.Additional complaint information monitoring for potential safety signals is conducted through complaint trending as part of post market surveillance.Device history review no manufacturing record evaluation required as no manufacturer or service-related issue found.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.

• Brand Name: VELYS ROBOTIC-ASSIST STATION
• Common Device Name: ORTHOPEDIC STEREOTAXIC INSTRUMENT
• Manufacturer (Section D): MEDOS INTERNATIONAL SÃ RL CH; chemin-blanc 38; le locle 02400 ; SZ 02400
• Manufacturer (Section G): DEPUY SYNTHES PRODUCTS LLC; 4500 riverside drive; palm beach gardens FL
• Manufacturer Contact: elba bello ; 325 paramount drive; raynham, MA 02767 ; 9083863534
• MDR Report Key: 24130062
• Report Number: 1526439-2026-00050
• Device Sequence Number: 5407459
• Product Code: OLO
• UDI-Device Identifier: 10705034646008
• UDI-Public: (01)10705034646008
• Combination Product (Y/N): N
• Initial Reporter State: MN
• Initial Reporter Country: US
• PMA/510(K) Number: K233228
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup

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: 451611001
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 01/07/2026
• Supplement Date Received by Manufacturer: 02/27/2026
• Initial Report FDA Received Date: 01/21/2026
• Supplement Report FDA Received Date: 03/02/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/22/2025
• 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