Device brand name · Biopsy instrument
Maxcore: medical device reports filed with FDA
4,025 reports name it, 2016–2026. Manufacturer given most often on reports: Bard Peripheral Vascular. Product code KNW.
- 4,025
- device reports naming the brand
- 0% of all MAUDE reports · about 384 a year
- 1,890
- reports, 12 months to August 2026
- 827 in the 12 months before
- 96.7%
- classified as malfunction
- 90.5% across the product code
- 0%
- classified as death, as reported
- 2 reports · not verified by FDA
4,025 medical device reports received by FDA name the brand "Maxcore" (biopsy instrument); the manufacturer given most often on reports is Bard Peripheral Vascular; received from January 2016 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.
1,890 reports arrived in the 12 months to August 2026, up 129% from 827 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 (96.7%) and injury (3.2%); across all instrument, biopsy reports (product code KNW) death is recorded in 0.1% and malfunction in 90.5%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are failure to fire (85.4%), failure to obtain sample (10.8%) and self-activation or keying (6.3%). The patient problems coded most often are hemorrhage/blood loss/bleeding, appropriate clinical signs, symptoms and conditions term/code not available and pain. 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 24,120 reports carrying product code KNW. 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 |
|---|---|---|---|
| Failure to fire | 3,438 | 85.4% | 30.2% |
| Failure to obtain sample | 435 | 10.8% | 11% |
| Self-activation or keying | 255 | 6.3% | 8.2% |
| Difficult to removethe device was hard to remove | 158 | 3.9% | 3.5% |
| Failure to prime | 127 | 3.2% | 3.7% |
| Material twisted/bent | 127 | 3.2% | 1.5% |
| Breakthe device broke | 49 | 1.2% | 4.6% |
| Device contamination with chemical or other material | 43 | 1.1% | 1.5% |
| Device markings/labelling problema problem with the device markings or label | 17 | 0.4% | 0.6% |
| Tear, rip or hole in device packaging | 15 | 0.4% | 0.9% |
| Detachment of device or device componentpart of the device came off | 13 | 0.3% | 1% |
| Improper or incorrect procedure or method | 13 | 0.3% | 0.2% |
| Difficult to insertthe device was hard to insert | 12 | 0.3% | 0.5% |
| Firing problem | 11 | 0.3% | 0.4% |
| Insufficient device problem information | 6 | 0.1% | 0.3% |
| Dull, blunt | 5 | 0.1% | 0.2% |
| Bent | 3 | 0.1% | 0.8% |
| Unsealed device packaging | 3 | 0.1% | 0.3% |
| Device difficult to setup or prepare | 2 | 0% | 0.3% |
| Entrapment of device | 2 | 0% | 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) | Reports | Share |
|---|---|---|
| Hemorrhage/blood loss/bleeding | 86 | 2.1% |
| Appropriate clinical signs, symptoms and conditions term/code not available | 30 | 0.7% |
| Painpain, site not specified | 21 | 0.5% |
| Pneumothoraxa collapsed lung | 18 | 0.4% |
| Hematomaa collection of blood under the skin or in tissue | 15 | 0.4% |
| No patient involvement | 9 | 0.2% |
| Hemoptysis | 8 | 0.2% |
| Foreign body in patientpart of a device left in the patient | 5 | 0.1% |
| Fever | 3 | 0.1% |
| Kidney injury | 3 | 0.1% |
| Perforation of vessels | 3 | 0.1% |
| Bruise/contusion | 2 | 0% |
| Chest painchest pain | 2 | 0% |
| Hematuria | 2 | 0% |
| Sepsisa severe body-wide response to infection | 2 | 0% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Maxcore | Product code KNW | All MAUDE reports |
|---|---|---|---|
| Reports | 4,025 | 24,120 | 26,136,888 |
| Share of that pool | — | 16.7% | 0% |
| Classified as death, per 1,000 reports | 0 | 1 | 9 |
| Classified as injury | 3.2% | 8.3% | 36.2% |
| Classified as malfunction | 96.7% | 90.5% | 62.3% |
| Filed by the manufacturer | 100% | 94.6% | 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 KNW
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| EnCor Biopsy Probe | 5,264 | 15 | 0% |
| Bard Max-Core Disposable Core Biopsy Instrument | 2,657 | 0 | 0% |
| Bard Max-Core Disposable Biopsy Instrument | 2,335 | 0 | 0% |
| Mtome St Holster/Cables | 495 | 0 | 0% |
| Mammotome Control Module With Smartvac - 120v | 339 | 0 | 0% |
| Brevera Breast Biopsy System | 319 | 69 | 0% |
| Monopty Disposable Core Biopsy Instrument | 288 | 0 | 0% |
| Marquee | 233 | 46 | 0% |
| Asap Biopsy System | 213 | 0 | 0.5% |
| Max-Core Disposable Core Biopsy Instrument | 205 | 0 | 0% |
| Mammotome Hardware Holster | 173 | 0 | 0% |
| Achieve | 164 | 125 | 0% |
| Mammotome Control Modules | 157 | 0 | 0% |
| Radial Jaw 3 Biopsy Forceps | 302 | 0 | 0% |
| Superdimension | 227 | 5 | 7% |
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 Maxcore reports
How many FDA reports name Maxcore?
4,025 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 1,890 in the latest 12 months.
What kinds of events are reported?
malfunction (96.7%) and injury (3.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
failure to fire (85.4%), failure to obtain sample (10.8%), self-activation or keying (6.3%), difficult to remove (3.9%) and failure to prime (3.2%). 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 Maxcore 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.