Reported Reactions

Devices › Hearing aid, bone conduction, implanted

Device brand name · Cochlear baha connect system

Ba400 Abutment 8mm: medical device reports filed with FDA

312 reports name it, 2016–2025. Manufacturer given most often on reports: Cochlear Bone Anchored Solutions. Product code MAH.

312
device reports naming the brand
0% of all MAUDE reports · about 32 a year
7
reports, 12 months to August 2026
24 in the 12 months before
0.3%
classified as malfunction
0.5% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

312 medical device reports received by FDA name the brand "Ba400 Abutment 8mm" (cochlear baha connect system); the manufacturer given most often on reports is Cochlear Bone Anchored Solutions; received from November 2016 to December 2025. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

7 reports arrived in the 12 months to August 2026, down 71% from 24 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 (99.4%) and malfunction (0.3%); 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 (41.7%), insufficient device problem information (1.9%) and inadequacy of device shape and/or size (1.3%). The patient problems coded most often are skin infection, impaired healing 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

0815Sep 2021: 3Oct 2021: 9Nov 2021: 5Dec 2021: 12022Jan 2022: 7Feb 2022: 7Mar 2022: 11Apr 2022: 1May 2022: 0Jun 2022: 5Jul 2022: 6Aug 2022: 2Sep 2022: 15Oct 2022: 4Nov 2022: 4Dec 2022: 22023Jan 2023: 6Feb 2023: 3Mar 2023: 2Apr 2023: 2May 2023: 6Jun 2023: 4Jul 2023: 4Aug 2023: 2Sep 2023: 0Oct 2023: 11Nov 2023: 1Dec 2023: 22024Jan 2024: 5Feb 2024: 4Mar 2024: 6Apr 2024: 4May 2024: 4Jun 2024: 2Jul 2024: 5Aug 2024: 2Sep 2024: 0Oct 2024: 9Nov 2024: 0Dec 2024: 02025Jan 2025: 0Feb 2025: 4Mar 2025: 2Apr 2025: 2May 2025: 2Jun 2025: 1Jul 2025: 2Aug 2025: 2Sep 2025: 0Oct 2025: 0Nov 2025: 5Dec 2025: 22026Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0

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

032642016: 320162017: 2920172018: 1420182019: 2720192020: 2520202021: 4420212022: 6420222023: 4320232024: 4120242025: 222025

Event type and report source

Event type, as classified on the report

Death0%0
Injury99.4%310
Malfunction0.3%1
Other0%0
Not given0.3%1

Who filed the report

Manufacturer report67.9%212
Voluntary report0%0
User facility report0%0
Distributor report32.1%100
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 problem13041.7%28%
Insufficient device problem information61.9%2%
Inadequacy of device shape and/or size41.3%0.5%
Loss of osseointegration31%13.6%
Biocompatibility20.6%0.1%
Patient-device incompatibilitythe device did not suit the patient10.3%0.2%

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 infection7624.4%
Impaired healingslow healing7524%
Host-tissue reaction3310.6%
Skin inflammation/ irritation258%
Painpain, site not specified237.4%
Bacterial infectiona bacterial infection185.8%
Appropriate clinical signs, symptoms and conditions term/code not available103.2%
Cellulitisa skin infection103.2%
Scar tissue92.9%
Inflammationinflammation72.2%
Post operative wound infection61.9%
Swelling/ edema51.6%
Wound dehiscencea wound reopened41.3%
Fluid discharge31%
Swellingswelling31%

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

In context

MeasureBa400 Abutment 8mmProduct code MAHAll MAUDE reports
Reports3126,70826,136,888
Share of that pool—4.7%0%
Classified as death, per 1,000 reports009
Classified as injury99.4%96%36.2%
Classified as malfunction0.3%0.5%62.3%
Filed by the manufacturer67.9%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%
BIA400 Implant 4mm w Abutment 8mm502330%
BA400 Abutment 10mm419180%
BA400 Abutment 12mm321210%
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 Ba400 Abutment 8mm reports

How many FDA reports name Ba400 Abutment 8mm?

312 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 7 in the latest 12 months.

What kinds of events are reported?

injury (99.4%) and malfunction (0.3%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

patient device interaction problem (41.7%), insufficient device problem information (1.9%), inadequacy of device shape and/or size (1.3%), loss of osseointegration (1%) and biocompatibility (0.6%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (67.9%) and distributor reports (32.1%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Ba400 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.