MAUDE Adverse Event Report: MAKO SURGICAL CORP. MAKO ROBOTIC ARM 3.1; ORTHOPEDIC STEREOTAXIC INSTRUMENT

Catalog Number	219999
Medical Device Problem Codes	Mechanical Problem (1384); Positioning Problem (3009)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/20/2025
Type of Reportable Event	Malfunction
Event or Problem Description
The following information was provided: mps reported arm got stuck in the patient with an error "joint angle inconsistent".He also reported the arm shaking during mako registration.Last surgery surgeon had to complete the case manual as the arm would not unlock during bone prep.
Additional Manufacturer Narrative
An event regarding mechanical failure involving a mako robotic arm was reported.The event was confirmed.Method & results: -product evaluation and results: the field service engineer reported: problem reproduced: yes work performed: observed ¿ j6 joint locking up using the micro e found a poor signal spot on the j6 joint encoder glass.There was a black substance on the j6 joint encoder glass.Adjusted ¿ removed and cleaned the j6 joint encoder glass & calibrated read head with micro e tool.Performed kin cal on both sides as a precautionary measure.Tensioned j5 transmission cabling to counteract any issues with cuts.No other problems observed.Lots of velocity errors on the log files advised mps to make sure to slow down arm movements during cases.All tests are optimal.Work order disposition: system investigation completed successfully as per service manual.All system checks and tests passed, system is ready for use.Clinician review: no medical records were received for review with a clinical consultant.Product history review: a review of device history records shows that product was inspected and the quality inspection procedures were completed with no reported discrepancies.Complaint history review: there have been other complaints with similar event(s) for the lot referenced.Conclusions: the alleged failure mode was confirmed.No additional investigation or specific actions are required.If additional information is received then the complaint will be reopened.
Event or Problem Description
No new information.

• Brand Name: MAKO ROBOTIC ARM 3.1
• Common Device Name: ORTHOPEDIC STEREOTAXIC INSTRUMENT
• Manufacturer (Section D): MAKO SURGICAL CORP.; 3365 enterprise ave; weston FL 33331
• Manufacturer (Section G): MAKO SURGICAL CORP.; 3365 enterprise ave; weston FL 33331
• Manufacturer Contact: deepan raju srinivasan ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 23825899
• Report Number: 3005985723-2025-00612
• Device Sequence Number: 5093752
• Product Code: OLO
• UDI-Device Identifier: 07613327395280
• UDI-Public: 07613327395280
• Combination Product (Y/N): N
• Initial Reporter State: SC
• Initial Reporter Country: US
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 04/27/2026

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: 219999
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 11/20/2025
• Supplement Date Received by Manufacturer: 03/31/2026
• Initial Report FDA Received Date: 12/17/2025
• Supplement Report FDA Received Date: 04/27/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 09/20/2019
• 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: Reuse
• Patient Sequence Number: 1
• Patient Sex: Unknown