Reported Reactions

Devices › Hearing aid, bone conduction, implanted

Device brand name · Cochlear baha connect system

BIA400 Implant 4mm w Abutment 8mm: medical device reports filed with FDA

502 reports name it, 2016–2026. Manufacturer given most often on reports: Cochlear Bone Anchored Solutions. Product code MAH.

502
device reports naming the brand
0% of all MAUDE reports · about 49 a year
33
reports, 12 months to August 2026
44 in the 12 months before
0%
classified as malfunction
0.5% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

502 medical device reports received by FDA name the brand "BIA400 Implant 4mm w Abutment 8mm" (cochlear baha connect system); the manufacturer given most often on reports is Cochlear Bone Anchored Solutions; received from March 2016 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

33 reports arrived in the 12 months to August 2026, down 25% from 44 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 (100%); across all hearing aid, bone conduction, implanted reports (product code MAH) death is recorded in 0% and malfunction in 0.5%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are patient device interaction problem (19.3%), loss of osseointegration (17.7%) and insufficient device problem information (0.8%). The patient problems coded most often are skin infection, bacterial infection and host-tissue reaction. 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

0611Sep 2021: 10Oct 2021: 4Nov 2021: 1Dec 2021: 72022Jan 2022: 0Feb 2022: 3Mar 2022: 2Apr 2022: 7May 2022: 1Jun 2022: 2Jul 2022: 2Aug 2022: 3Sep 2022: 2Oct 2022: 2Nov 2022: 0Dec 2022: 42023Jan 2023: 2Feb 2023: 2Mar 2023: 0Apr 2023: 0May 2023: 4Jun 2023: 0Jul 2023: 2Aug 2023: 0Sep 2023: 4Oct 2023: 2Nov 2023: 0Dec 2023: 12024Jan 2024: 0Feb 2024: 0Mar 2024: 0Apr 2024: 0May 2024: 1Jun 2024: 0Jul 2024: 0Aug 2024: 4Sep 2024: 2Oct 2024: 2Nov 2024: 4Dec 2024: 112025Jan 2025: 3Feb 2025: 3Mar 2025: 3Apr 2025: 1May 2025: 4Jun 2025: 2Jul 2025: 7Aug 2025: 2Sep 2025: 3Oct 2025: 4Nov 2025: 0Dec 2025: 42026Jan 2026: 0Feb 2026: 4Mar 2026: 3Apr 2026: 5May 2026: 4Jun 2026: 4Jul 2026: 0Aug 2026: 2

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

042832016: 1620162017: 742018: 5920182019: 822020: 8320202021: 612022: 2820222023: 172024: 2420242025: 362026: 222026

Event type and report source

Event type, as classified on the report

Death0%0
Injury100%502
Malfunction0%0
Other0%0
Not given0%0

Who filed the report

Manufacturer report71.7%360
Voluntary report0%0
User facility report0%0
Distributor report28.3%142
Not given0%0

Grey bar: all 6,708 reports carrying product code MAH. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Patient device interaction problem9719.3%28%
Loss of osseointegration8917.7%13.6%
Insufficient device problem information40.8%2%
Signal artifact/noise40.8%0.1%
Inadequacy of device shape and/or size30.6%0.5%
Biocompatibility20.4%0.1%
Osseointegration problem20.4%0.8%
Expulsion10.2%0.1%
Failure to osseointegrate10.2%8.3%

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
Skin infection6212.4%
Bacterial infectiona bacterial infection5511%
Host-tissue reaction479.4%
Impaired healingslow healing459%
Painpain, site not specified326.4%
Appropriate clinical signs, symptoms and conditions term/code not available306%
Inadequate osseointegration255%
Fluid discharge153%
Skin inflammation/ irritation153%
Cellulitisa skin infection122.4%
Purulent discharge91.8%
Swelling/ edema91.8%
Skin irritationirritated skin71.4%
Hearing impairment61.2%
Inflammationinflammation61.2%

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

In context

MeasureBIA400 Implant 4mm w Abutment 8mmProduct code MAHAll MAUDE reports
Reports5026,70826,136,888
Share of that pool—7.5%0%
Classified as death, per 1,000 reports009
Classified as injury100%96%36.2%
Classified as malfunction0%0.5%62.3%
Filed by the manufacturer71.7%72.4%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 MAH

BrandReportsLatest 12 monthsClassified as death
Asku4,7522101.1%
BIA400 Implant 4mm w Abutment 10mm833680%
Ponto799420%
BIA400 Implant 4mm w Abutment 12mm673350%
BA400 Abutment 10mm419180%
BA400 Abutment 12mm321210%
Ba400 Abutment 8mm31270%
BIA400 Implant 4mm w Abutment 14mm205250%
Flange Fixture And Abutment2,92000%
Vibrant Soundbridge1,265820%
BIM400 Implant Magnet1,1551530%
Flange Fixture St 4mm W Baha Abutment19790%
Bi300 Implant 3mm181190%
BI300 Implant 4 mm314280%
Bonebridge485990%

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 BIA400 Implant 4mm w Abutment 8mm reports

How many FDA reports name BIA400 Implant 4mm w Abutment 8mm?

502 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 33 in the latest 12 months.

What kinds of events are reported?

injury (100%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

patient device interaction problem (19.3%), loss of osseointegration (17.7%), insufficient device problem information (0.8%), signal artifact/noise (0.8%) and inadequacy of device shape and/or size (0.6%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (71.7%) and distributor reports (28.3%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that BIA400 Implant 4mm w Abutment 8mm 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.