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Coupler II Main Assembly 5873Recalls & reported problems

Mizuho Orthopedic Systems, Inc. · Class 1

Data updated Oct 13, 2026 from official FDA records · Editorial policy

Adverse event reports
4
Deaths reported
0
Injuries reported
1
Recalls naming it
0

Summary

The FDA's MAUDE database contains 4 adverse event reports that list this exact device (DI 00842430104534), received between Oct 29, 2019 and Nov 12, 2025 — classified as 1 injury, 3 malfunctions.

The most frequently reported specific device problem is “Break” (2 reports).

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. How this data works · Data updated Oct 13, 2026.

Reports received per month

Nov 2023: 0 reportsDec 2023: 0 reportsJan 2024: 0 reportsFeb 2024: 0 reportsMar 2024: 0 reportsApr 2024: 0 reportsMay 2024: 0 reportsJun 2024: 0 reportsJul 2024: 0 reportsAug 2024: 0 reportsSep 2024: 0 reportsOct 2024: 0 reportsNov 2024: 0 reportsDec 2024: 0 reportsJan 2025: 0 reportsFeb 2025: 0 reportsMar 2025: 0 reportsApr 2025: 0 reportsMay 2025: 0 reportsJun 2025: 0 reportsJul 2025: 0 reportsAug 2025: 0 reportsSep 2025: 0 reportsOct 2025: 0 reportsNov 2025: 1 reportsDec 2025: 0 reportsJan 2026: 0 reportsFeb 2026: 0 reportsMar 2026: 0 reportsApr 2026: 0 reportsMay 2026: 0 reportsJun 2026: 0 reportsJul 2026: 0 reportsAug 2026: 0 reportsSep 2026: 0 reportsOct 2026: 0 reports2024202520261
Last 36 months. The most recent month may be incomplete.

Most reported problems

Device problems

  • Break2
  • Adverse Event Without Identified Device or Use Problem1
  • Mechanical Problem1
  • Use of Device Problem1

Patient problems

  • Laceration(s)2
  • No Clinical Signs, Symptoms or Conditions1
  • No Known Impact Or Consequence To Patient1

Recent adverse event reports

The 4 most recent of 4 reports, in the reporter's own words as published by the FDA.

  • MalfunctionNov 12, 2025Break; Break

    KNOB ASSEMBLY OF THE SWIVEL ADAPTER BROKE DURING 180-DEGREE ROTATION PROCEDURE. NO PATIENT INJURY WAS REPORTED.

    Patient problems: No Clinical Signs, Symptoms or Conditions

    MAUDE report 23535996 ↗
  • InjuryJun 22, 2022Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem

    IT WAS REPORTED THAT A MAYFIELD SLIPPED DURING PATIENT TRANSFER RESULTING IN A CUT ON THE PATIENT'S HEAD AND THE COUPLER II DEVICE WAS SOMEHOW INVOLVED IN THE INCIDENT.

    Patient problems: Laceration(s)

    MAUDE report 14778107 ↗
  • MalfunctionMar 10, 2020Break; Break

    WHEN THE OPERATOR TURNED THE KNOB DURING SURGERY, IT BROKE HALFWAY. THEREFORE, THEY FIXED THE COUPLER BY CHUCKING THE THREAD WITH PLIERS.

    Patient problems: No Known Impact Or Consequence To Patient

    MAUDE report 9811172 ↗
  • MalfunctionOct 29, 2019Mechanical Problem; Use of Device Problem; Mechanical Problem; Use of Device Problem

    IT WAS REPORTED WHILE TRYING TO POSITION AN UNSTABLE CERVICAL SPINE, THE MAYFIELD OSI COUPLER ASSEMBLY ADAPTER FAILED TO TIGHTEN. PATIENT RECEIVED A MINOR LACERATION.

    Patient problems: Laceration(s)

    MAUDE report 9251713 ↗

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Sources and updates

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