Reported Reactions

Devices › Tissue expander and accessories

Device brand name · Expander skin inflatable

Unk Tissue Expander: medical device reports filed with FDA

481 reports name it, 2013–2026. Manufacturer given most often on reports: Allergan Costa Rica. Product code LCJ.

481
device reports naming the brand
0% of all MAUDE reports · about 37 a year
63
reports, 12 months to August 2026
55 in the 12 months before
3.1%
classified as malfunction
15.5% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 481 reports that name the brand "Unk Tissue Expander" (expander skin inflatable), received between May 2013 and July 2026; the manufacturer given most often on reports is Allergan Costa Rica. Spellings of one product vary from report to report.

63 reports arrived in the 12 months to August 2026, up 15% from 55 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 (96.9%) and malfunction (3.1%); across all tissue expander and accessories reports (product code LCJ) death is recorded in 0.1% and malfunction in 15.5%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are fluid/blood leak (21.8%), patient-device incompatibility (7.1%) and device appears to trigger rejection (6.7%). The patient problems coded most often are failure of implant, seroma and necrosis. 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

0816Sep 2021: 1Oct 2021: 3Nov 2021: 4Dec 2021: 52022Jan 2022: 5Feb 2022: 1Mar 2022: 2Apr 2022: 3May 2022: 8Jun 2022: 7Jul 2022: 6Aug 2022: 6Sep 2022: 3Oct 2022: 6Nov 2022: 5Dec 2022: 22023Jan 2023: 2Feb 2023: 0Mar 2023: 2Apr 2023: 6May 2023: 5Jun 2023: 3Jul 2023: 1Aug 2023: 5Sep 2023: 3Oct 2023: 5Nov 2023: 0Dec 2023: 02024Jan 2024: 2Feb 2024: 2Mar 2024: 3Apr 2024: 6May 2024: 6Jun 2024: 4Jul 2024: 3Aug 2024: 7Sep 2024: 11Oct 2024: 4Nov 2024: 2Dec 2024: 92025Jan 2025: 0Feb 2025: 3Mar 2025: 4Apr 2025: 4May 2025: 6Jun 2025: 3Jul 2025: 2Aug 2025: 7Sep 2025: 10Oct 2025: 1Nov 2025: 12Dec 2025: 42026Jan 2026: 1Feb 2026: 6Mar 2026: 6Apr 2026: 1May 2026: 16Jun 2026: 2Jul 2026: 4Aug 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

033652013: 420132016: 222017: 2220172018: 652019: 4720192020: 492021: 3520212022: 542023: 3220232024: 592025: 5620252026: 36

Event type and report source

Event type, as classified on the report

Death0%0
Injury96.9%466
Malfunction3.1%15
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%481
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 5,173 reports carrying product code LCJ. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Fluid/blood leak10521.8%15.5%
Patient-device incompatibilitythe device did not suit the patient347.1%1.7%
Device appears to trigger rejection326.7%2.8%
Material rupture214.4%35.3%
Insufficient device problem information112.3%1.2%
Device handling problem61.2%0.6%
Improper or incorrect procedure or method61.2%1.3%
Malposition of device61.2%0.2%
Migrationthe device moved from where it was placed51%1%
Biofilm coating in device40.8%0.1%
Breakthe device broke40.8%3%
Detachment of device or device componentpart of the device came off20.4%0.2%
Inflation problem20.4%1.2%
Off-label use20.4%2%
Deflation problem10.2%1.6%
Device contaminated during manufacture or shipping10.2%0.5%
Device damaged prior to usethe device was damaged before use10.2%0.1%
Material fragmentation10.2%0%
Material protrusion/extrusion10.2%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
Failure of implant12125.2%
Seromaa collection of fluid under the skin8517.7%
Necrosisdeath of tissue5110.6%
Capsular contracturescar tissue tightening around an implant377.7%
Cellulitisa skin infection316.4%
Wound dehiscencea wound reopened285.8%
Bacterial infectiona bacterial infection224.6%
Foreign body reaction142.9%
Impaired healingslow healing132.7%
Hematomaa collection of blood under the skin or in tissue61.2%
Tissue irritation61.2%
Fluid discharge51%
Ischemia51%
Lymphomaa cancer of the lymphatic system51%
Pocket erosion51%

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

In context

MeasureUnk Tissue ExpanderProduct code LCJAll MAUDE reports
Reports4815,17326,136,888
Share of that pool—9.3%0%
Classified as death, per 1,000 reports019
Classified as injury96.9%82.4%36.2%
Classified as malfunction3.1%15.5%62.3%
Filed by the manufacturer100%89.1%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 LCJ

BrandReportsLatest 12 monthsClassified as death
MENTOR CPX 4 Breast Tissue Expander with Suture Tabs319370%
Unknown Tissue Expanders320240%
ARTOURA Breast Tissue Expander31480%
MENTOR Tissue Expander215150%
Mentor Cpx 4 Breast Tissue Expander18240%
Mcghan46800%
Mentor78800.1%
Motiva Implants2,5151,7290%
Breast Implant1,136971.3%
Non Mentor Product418220%
MENTOR MemoryGel Breast Implant57,7717,7080%
Unknown Gel Implants5,3377030%
Saline Breast Implant18601.1%
Unknown Mentor Implant424160%

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 Unk Tissue Expander reports

How many FDA reports name Unk Tissue Expander?

481 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 63 in the latest 12 months.

What kinds of events are reported?

injury (96.9%) and malfunction (3.1%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

fluid/blood leak (21.8%), patient-device incompatibility (7.1%), device appears to trigger rejection (6.7%), material rupture (4.4%) and insufficient device problem information (2.3%). 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 Unk Tissue Expander 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.