Devices › Operating room accessories table tray
Device brand name · Base units and adapters
Mayfield Ultra Base Unit: medical device reports filed with FDA
495 reports name it, 2009–2026. Manufacturer given most often on reports: Integra Lifesciences Oh/USA. Product code FWZ.
- 495
- device reports naming the brand
- 0% of all MAUDE reports · about 29 a year
- 8
- reports, 12 months to August 2026
- 14 in the 12 months before
- 94.5%
- classified as malfunction
- 82.8% across the product code
- 0%
- classified as death, as reported
- 0 reports · not verified by FDA
495 medical device reports received by FDA name the brand "Mayfield Ultra Base Unit" (base units and adapters); the manufacturer given most often on reports is Integra Lifesciences Oh/USA; received from May 2009 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.
8 reports arrived in the 12 months to August 2026, down 43% from 14 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (94.5%), injury (4.8%) and other (0.4%); across all operating room accessories table tray reports (product code FWZ) death is recorded in 0.1% and malfunction in 82.8%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are mechanical problem (40%), device slipped (8.3%) and deformation due to compressive stress (7.7%). The patient problems coded most often are no patient involvement, laceration(s) and injury. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Reports by month, five years
Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.
By year received
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 1,818 reports carrying product code FWZ. Event type is the filer's classification and is not verified by FDA.
Device problems coded
| Device problem (FDA code) | Reports | Share | Share across product code |
|---|---|---|---|
| Mechanical problema mechanical problem | 198 | 40% | 19.4% |
| Device slipped | 41 | 8.3% | 10.1% |
| Deformation due to compressive stress | 38 | 7.7% | 2.1% |
| Loose or intermittent connection | 38 | 7.7% | 5.8% |
| Unintended movement | 33 | 6.7% | 8.8% |
| Device handling problem | 28 | 5.7% | 1.9% |
| Mechanics altered | 26 | 5.3% | 2.1% |
| Fitting problem | 15 | 3% | 0.9% |
| Breakthe device broke | 11 | 2.2% | 9.5% |
| Physical resistance/sticking | 10 | 2% | 2.3% |
| Unstable | 9 | 1.8% | 6.5% |
| Device operates differently than expectedthe device behaved unexpectedly | 7 | 1.4% | 4.7% |
| Naturally worn | 7 | 1.4% | 1.1% |
| Material integrity problema problem with the device material | 6 | 1.2% | 1% |
| Mechanical jam | 6 | 1.2% | 0.9% |
| Connection problema connection problem | 4 | 0.8% | 0.5% |
| Crackthe device cracked | 4 | 0.8% | 0.9% |
| Difficult to open or close | 4 | 0.8% | 0.3% |
| Component missing | 2 | 0.4% | 0.6% |
| Detachment of device component | 2 | 0.4% | 2.2% |
FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.
Patient problems coded
| Patient problem (FDA code) | Reports | Share |
|---|---|---|
| No patient involvement | 38 | 7.7% |
| Laceration(s) | 8 | 1.6% |
| Injurya physical injury | 4 | 0.8% |
| Abrasion | 2 | 0.4% |
| Falla fall | 1 | 0.2% |
| Hemorrhage/blood loss/bleeding | 1 | 0.2% |
| Neck stiffness | 1 | 0.2% |
| Scarring | 1 | 0.2% |
| Skin discoloration | 1 | 0.2% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Mayfield Ultra Base Unit | Product code FWZ | All MAUDE reports |
|---|---|---|---|
| Reports | 495 | 1,818 | 26,136,888 |
| Share of that pool | — | 27.2% | 0% |
| Classified as death, per 1,000 reports | 0 | 1 | 9 |
| Classified as injury | 4.8% | 11.7% | 36.2% |
| Classified as malfunction | 94.5% | 82.8% | 62.3% |
| Filed by the manufacturer | 99.6% | 92.5% | 94.9% |
Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Other brands with product code FWZ
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Zimmer Skin Graft Mesher | 3,463 | 285 | 0% |
| Mayfield Modified Skull Clamp | 2,663 | 75 | 0% |
| Mayfield Triad Skull Clamp | 236 | 1 | 0% |
| Mayfield | 189 | 3 | 0% |
| Mayfield Composite Series Skull Clamp | 646 | 33 | 0.2% |
| Mayfield Infinity Skull Clamp | 239 | 7 | 0% |
| Mayfield Infinity Xr2 Skull Clamp | 180 | 3 | 0.6% |
| Z S G M Cutter 1 5 1 Ratio Caution Sharp | 342 | 17 | 0% |
| Z S G M Cutter 2 1 Ratio Caution Sharp | 220 | 6 | 0% |
Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."
Questions about Mayfield Ultra Base Unit reports
How many FDA reports name Mayfield Ultra Base Unit?
495 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 8 in the latest 12 months.
What kinds of events are reported?
malfunction (94.5%), injury (4.8%) and other (0.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
mechanical problem (40%), device slipped (8.3%), deformation due to compressive stress (7.7%), loose or intermittent connection (7.7%) and unintended movement (6.7%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (99.6%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Mayfield Ultra Base Unit was at fault?
No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."
How do I report a problem with a medical device?
Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.
Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.
Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.