Reported Reactions

Devices › System, endovascular graft, aortic aneurysm treatment

Device brand name · Mih system endovascular graft aortic aneurysm treatment

Zenith Flex with Spiral-Z Technology AAA Endovascular Graft Iliac Leg: medical device reports filed with FDA

724 reports name it, 2011–2026. Manufacturer given most often on reports: Cook. Product code MIH.

724
device reports naming the brand
0% of all MAUDE reports · about 49 a year
91
reports, 12 months to August 2026
49 in the 12 months before
30.1%
classified as malfunction
14.8% across the product code
3.6%
classified as death, as reported
26 reports · not verified by FDA

FDA's MAUDE database holds 724 reports that name the brand "Zenith Flex with Spiral-Z Technology AAA Endovascular Graft Iliac Leg" (mih system endovascular graft aortic aneurysm treatment), received between September 2011 and August 2026; the manufacturer given most often on reports is Cook. Spellings of one product vary from report to report.

91 reports arrived in the 12 months to August 2026, up 86% from 49 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 injury (66.3%), malfunction (30.1%) and death (3.6%); across all system, endovascular graft, aortic aneurysm treatment reports (product code MIH) death is recorded in 9.8% and malfunction in 14.8%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are fluid/blood leak (19.3%), obstruction of flow (16.2%) and occlusion within device (16%). The patient problems coded most often are clinical endoleak, thrombosis/thrombus and occlusion. 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

01019Sep 2021: 2Oct 2021: 1Nov 2021: 0Dec 2021: 12022Jan 2022: 0Feb 2022: 12Mar 2022: 1Apr 2022: 4May 2022: 2Jun 2022: 4Jul 2022: 1Aug 2022: 5Sep 2022: 3Oct 2022: 4Nov 2022: 1Dec 2022: 52023Jan 2023: 4Feb 2023: 4Mar 2023: 3Apr 2023: 5May 2023: 4Jun 2023: 4Jul 2023: 4Aug 2023: 2Sep 2023: 1Oct 2023: 7Nov 2023: 0Dec 2023: 52024Jan 2024: 3Feb 2024: 8Mar 2024: 4Apr 2024: 3May 2024: 12Jun 2024: 7Jul 2024: 7Aug 2024: 3Sep 2024: 3Oct 2024: 1Nov 2024: 4Dec 2024: 22025Jan 2025: 4Feb 2025: 5Mar 2025: 9Apr 2025: 1May 2025: 5Jun 2025: 5Jul 2025: 5Aug 2025: 5Sep 2025: 4Oct 2025: 9Nov 2025: 5Dec 2025: 52026Jan 2026: 11Feb 2026: 12Mar 2026: 5Apr 2026: 8May 2026: 19Jun 2026: 8Jul 2026: 2Aug 2026: 3

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

036722011: 620112012: 292013: 3020132014: 262015: 3920152016: 532017: 7220172018: 572019: 5420192020: 482021: 3820212022: 422023: 4320232024: 572025: 6220252026: 68

Event type and report source

Event type, as classified on the report

Death3.6%26
Injury66.3%480
Malfunction30.1%218
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%724
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 72,039 reports carrying product code MIH. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Fluid/blood leak14019.3%1.8%
Obstruction of flow11716.2%1%
Occlusion within devicethe device blocked11616%5.4%
Leak/splashthe device leaked9613.3%33.8%
Device endoleak659%1.2%
Complete blockage405.5%0.4%
Partial blockage283.9%0.3%
Deformation due to compressive stress243.3%0.5%
Inadequacy of device shape and/or size202.8%0.5%
Difficult to advance141.9%0.6%
Kinkedthe tube or line kinked91.2%1.7%
Migrationthe device moved from where it was placed91.2%1.4%
Device-device incompatibility81.1%0.4%
Activation, positioning or separation problem71%1.7%
Material puncture/hole60.8%1.6%
Failure to advance50.7%1.1%
Hole in material50.7%1%
Material rupture50.7%0.2%
Patient-device incompatibilitythe device did not suit the patient50.7%3.4%
Malposition of device40.6%3.9%

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)ReportsShare
Clinical endoleak11415.7%
Thrombosis/thrombus679.3%
Occlusion537.3%
Thrombus486.6%
Thrombosis385.2%
Painpain, site not specified324.4%
Obstruction/occlusion314.3%
Claudication263.6%
Ischemia253.5%
Stenosis253.5%
Surgical procedure, additional182.5%
Aneurysm152.1%
Blood loss131.8%
Deaththe patient died; cause not stated by this term121.7%
Ruptured aneurysm91.2%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureZenith Flex with Spiral-Z Technology AAA Endovascular Graft Iliac LegProduct code MIHAll MAUDE reports
Reports72472,03926,136,888
Share of that pool—1%0%
Classified as death, per 1,000 reports36989
Classified as injury66.3%74.9%36.2%
Classified as malfunction30.1%14.8%62.3%
Filed by the manufacturer100%99%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 MIH

BrandReportsLatest 12 monthsClassified as death
GORE EXCLUDER AAA Endoprosthesis9,5906334.8%
Afx3,584305%
Gore Tag Thoracic Endoprosthesis2,829414.7%
Endurant1,861014.7%
Endurant Iis Bifurcated Stent Graft1,70612111.6%
Valiant Captivia - FF1,5329515.1%
GORE TAG Conformable Thoracic Stent Graft with ACTIVE CONTROL System1,4743117.7%
Endurant Stent Graft1,4715610%
Afx21,2631236.4%
Medtronic Aneurx Bifurcated Stent Graft Flexible1,26309.7%
Zenith Flex AAA Endovascular Graft Bifurcated Main Body1,172156.1%
Valiant Navion1,1494017.4%
Ancure Endograft System1,12605.1%
Endurant Abdominal Stent Graft System997012.9%
Afx System88208.4%

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 Zenith Flex with Spiral-Z Technology AAA Endovascular Graft Iliac Leg reports

How many FDA reports name Zenith Flex with Spiral-Z Technology AAA Endovascular Graft Iliac Leg?

724 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 91 in the latest 12 months.

What kinds of events are reported?

injury (66.3%), malfunction (30.1%) and death (3.6%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

fluid/blood leak (19.3%), obstruction of flow (16.2%), occlusion within device (16%), leak/splash (13.3%) and device endoleak (9%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Zenith Flex with Spiral-Z Technology AAA Endovascular Graft Iliac Leg 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.