Reported Reactions

Devices › Hearing aid, bone conduction, implanted

Device brand name · Cochlear baha connect system

BIA400 Implant 4mm w Abutment 12mm: medical device reports filed with FDA

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

673
device reports naming the brand
0% of all MAUDE reports · about 64 a year
35
reports, 12 months to August 2026
56 in the 12 months before
0.1%
classified as malfunction
0.5% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 673 reports that name the brand "BIA400 Implant 4mm w Abutment 12mm" (cochlear baha connect system), received between January 2016 and August 2026; the manufacturer given most often on reports is Cochlear Bone Anchored Solutions. Spellings of one product vary from report to report.

35 reports arrived in the 12 months to August 2026, down 37% from 56 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 (99.9%) and malfunction (0.1%); 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 loss of osseointegration (22%), patient device interaction problem (16.2%) and insufficient device problem information (2.1%). The patient problems coded most often are skin infection, host-tissue reaction and inadequate osseointegration. 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

0510Sep 2021: 2Oct 2021: 10Nov 2021: 6Dec 2021: 22022Jan 2022: 0Feb 2022: 4Mar 2022: 2Apr 2022: 2May 2022: 1Jun 2022: 4Jul 2022: 1Aug 2022: 0Sep 2022: 2Oct 2022: 0Nov 2022: 7Dec 2022: 02023Jan 2023: 7Feb 2023: 6Mar 2023: 4Apr 2023: 0May 2023: 2Jun 2023: 5Jul 2023: 5Aug 2023: 5Sep 2023: 0Oct 2023: 9Nov 2023: 5Dec 2023: 62024Jan 2024: 1Feb 2024: 0Mar 2024: 0Apr 2024: 0May 2024: 5Jun 2024: 2Jul 2024: 2Aug 2024: 4Sep 2024: 0Oct 2024: 0Nov 2024: 10Dec 2024: 92025Jan 2025: 2Feb 2025: 6Mar 2025: 6Apr 2025: 8May 2025: 1Jun 2025: 3Jul 2025: 3Aug 2025: 8Sep 2025: 5Oct 2025: 2Nov 2025: 5Dec 2025: 22026Jan 2026: 0Feb 2026: 2Mar 2026: 4Apr 2026: 7May 2026: 2Jun 2026: 2Jul 2026: 2Aug 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

0631252016: 1820162017: 722018: 9520182019: 1032020: 12520202021: 782022: 2320222023: 542024: 3320242025: 512026: 212026

Event type and report source

Event type, as classified on the report

Death0%0
Injury99.9%672
Malfunction0.1%1
Other0%0
Not given0%0

Who filed the report

Manufacturer report70%471
Voluntary report0%0
User facility report0%0
Distributor report30%202
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
Loss of osseointegration14822%13.6%
Patient device interaction problem10916.2%28%
Insufficient device problem information142.1%2%
Loosening of implant not related to bone-ingrowth81.2%1.7%
Failure to osseointegrate50.7%8.3%
Osseointegration problem40.6%0.8%
Inadequacy of device shape and/or size30.4%0.5%
Biocompatibility20.3%0.1%
Detachment of device or device componentpart of the device came off20.3%0.5%
Therapeutic or diagnostic output failure20.3%0.3%
Device dislodged or dislocated10.1%0%
Positioning failure10.1%0%

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 infection8712.9%
Host-tissue reaction7110.5%
Inadequate osseointegration7010.4%
Bacterial infectiona bacterial infection649.5%
Painpain, site not specified466.8%
Impaired healingslow healing385.6%
Appropriate clinical signs, symptoms and conditions term/code not available375.5%
Skin inflammation/ irritation192.8%
Head injurya head injury131.9%
Purulent discharge121.8%
Hearing impairment111.6%
Skin irritationirritated skin101.5%
Swelling/ edema101.5%
Inflammationinflammation91.3%
Cellulitisa skin infection81.2%

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

In context

MeasureBIA400 Implant 4mm w Abutment 12mmProduct code MAHAll MAUDE reports
Reports6736,70826,136,888
Share of that pool—10%0%
Classified as death, per 1,000 reports009
Classified as injury99.9%96%36.2%
Classified as malfunction0.1%0.5%62.3%
Filed by the manufacturer70%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 8mm502330%
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 12mm reports

How many FDA reports name BIA400 Implant 4mm w Abutment 12mm?

673 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 35 in the latest 12 months.

What kinds of events are reported?

injury (99.9%) and malfunction (0.1%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

loss of osseointegration (22%), patient device interaction problem (16.2%), insufficient device problem information (2.1%), loosening of implant not related to bone-ingrowth (1.2%) and failure to osseointegrate (0.7%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (70%) and distributor reports (30%). 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 12mm 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.