Reported Reactions

Devices › Dilator, esophageal

Device brand name · Knq dilator esophageal

Hercules 3 Stage Wireguided Balloon Esophageal-Pyloric-Colonic: medical device reports filed with FDA

644 reports name it, 2011–2026. Manufacturer given most often on reports: Cook Endoscopy. Product code KNQ.

644
device reports naming the brand
0% of all MAUDE reports · about 42 a year
46
reports, 12 months to August 2026
36 in the 12 months before
96.6%
classified as malfunction
90.6% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

644 medical device reports received by FDA name the brand "Hercules 3 Stage Wireguided Balloon Esophageal-Pyloric-Colonic" (knq dilator esophageal); the manufacturer given most often on reports is Cook Endoscopy; received from April 2011 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

46 reports arrived in the 12 months to August 2026, up 28% from 36 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 (96.6%) and injury (3.4%); across all dilator, esophageal reports (product code KNQ) death is recorded in 0.3% and malfunction in 90.6%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are fracture (26.9%), crack (17.5%) and fluid/blood leak (16.1%). The patient problems coded most often are no patient involvement, foreign body in patient and device embedded in tissue or plaque. 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

0713Sep 2021: 4Oct 2021: 1Nov 2021: 3Dec 2021: 52022Jan 2022: 2Feb 2022: 4Mar 2022: 4Apr 2022: 3May 2022: 8Jun 2022: 8Jul 2022: 3Aug 2022: 5Sep 2022: 3Oct 2022: 5Nov 2022: 3Dec 2022: 42023Jan 2023: 3Feb 2023: 4Mar 2023: 2Apr 2023: 1May 2023: 6Jun 2023: 7Jul 2023: 6Aug 2023: 3Sep 2023: 5Oct 2023: 4Nov 2023: 5Dec 2023: 32024Jan 2024: 7Feb 2024: 6Mar 2024: 6Apr 2024: 1May 2024: 7Jun 2024: 7Jul 2024: 7Aug 2024: 6Sep 2024: 4Oct 2024: 4Nov 2024: 1Dec 2024: 42025Jan 2025: 3Feb 2025: 3Mar 2025: 1Apr 2025: 6May 2025: 1Jun 2025: 2Jul 2025: 2Aug 2025: 5Sep 2025: 3Oct 2025: 1Nov 2025: 3Dec 2025: 22026Jan 2026: 4Feb 2026: 1Mar 2026: 5Apr 2026: 3May 2026: 2Jun 2026: 2Jul 2026: 7Aug 2026: 13

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

030602011: 1120112012: 302013: 2920132014: 292015: 4020152016: 362017: 5420172018: 552019: 4720192020: 422021: 4120212022: 522023: 4920232024: 602025: 3220252026: 37

Event type and report source

Event type, as classified on the report

Death0%0
Injury3.4%22
Malfunction96.6%622
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%644
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 5,261 reports carrying product code KNQ. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Fracturea broken bone17326.9%3.6%
Crackthe device cracked11317.5%2.5%
Fluid/blood leak10416.1%5.4%
Burst container or vessel649.9%20.8%
Material puncture/hole507.8%7.7%
Hole in material487.5%4.4%
Leak/splashthe device leaked446.8%6.5%
Off-label use345.3%1%
Improper or incorrect procedure or method335.1%1%
Material rupture335.1%16.2%
Breakthe device broke142.2%3.1%
Material fragmentation121.9%0.7%
Inflation problem101.6%4.8%
Difficult to removethe device was hard to remove71.1%4.4%
Material separation60.9%0.5%
Detachment of device component40.6%2.9%
Failure to advance40.6%0.2%
Bent30.5%1.1%
Detachment of device or device componentpart of the device came off30.5%1.6%
Device-device incompatibility30.5%0.1%

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
No patient involvement172.6%
Foreign body in patientpart of a device left in the patient121.9%
Device embedded in tissue or plaque50.8%
Laceration(s) of esophagus40.6%
Aspiration/inhalation20.3%
Gastrointestinal hemorrhage10.2%
Pancreatitisinflammation of the pancreas10.2%
Perforation10.2%
Stenosis10.2%
Tissue damage10.2%

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

In context

MeasureHercules 3 Stage Wireguided Balloon Esophageal-Pyloric-ColonicProduct code KNQAll MAUDE reports
Reports6445,26126,136,888
Share of that pool—12.2%0%
Classified as death, per 1,000 reports039
Classified as injury3.4%8.6%36.2%
Classified as malfunction96.6%90.6%62.3%
Filed by the manufacturer100%95.1%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 KNQ

BrandReportsLatest 12 monthsClassified as death
CRE Fixed Wire9521520%
Xxl Esophageal639140.2%
Hercules 3 Stage Balloon Esophageal45470%
Cre Pro Gi344620%
CRE Wireguided718560.3%
Quantum Ttc Esophageal Balloon Dilator21800%
Cre Balloon Dilatation Catheter15400%
XXL? Vascular22080.9%
Captura Serrated Forceps With Spike22300%
Amplatz Super Stiff Guidewire40303%
Balloon330480.3%
Boston Scientific58053.3%
Conmed900890.2%
Cre Pro9853410.1%

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 Hercules 3 Stage Wireguided Balloon Esophageal-Pyloric-Colonic reports

How many FDA reports name Hercules 3 Stage Wireguided Balloon Esophageal-Pyloric-Colonic?

644 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 46 in the latest 12 months.

What kinds of events are reported?

malfunction (96.6%) and injury (3.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

fracture (26.9%), crack (17.5%), fluid/blood leak (16.1%), burst container or vessel (9.9%) and material puncture/hole (7.8%). 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 Hercules 3 Stage Wireguided Balloon Esophageal-Pyloric-Colonic 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.