Devices › Electrosurgical, cutting & coagulation & accessories
Device brand name · Electrosurgical unit
Electrosurgical Unit: medical device reports filed with FDA
153 reports name it, 1993–2025. Manufacturer given most often on reports: Olympus Medical Systems. Product code GEI.
- 153
- device reports naming the brand
- 0% of all MAUDE reports · about 5 a year
- 0
- reports, 12 months to August 2026
- 8 in the 12 months before
- 46.4%
- classified as malfunction
- 80.1% across the product code
- 0%
- classified as death, as reported
- 0 reports · not verified by FDA
153 medical device reports received by FDA name the brand "Electrosurgical Unit" (electrosurgical unit); the manufacturer given most often on reports is Olympus Medical Systems; received from January 1993 to August 2025. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.
0 reports arrived in the 12 months to August 2026, against 8 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 (46.4%), injury (41.8%) and other (7.2%); across all electrosurgical, cutting & coagulation & accessories reports (product code GEI) death is recorded in 0.4% and malfunction in 80.1%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are insufficient device problem information (7.8%), thermal decomposition of device (5.2%) and device operates differently than expected (2.6%). The patient problems coded most often are burn(s), blood loss and hemorrhage/blood loss/bleeding. 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 118,290 reports carrying product code GEI. 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 |
|---|---|---|---|
| Insufficient device problem information | 12 | 7.8% | 2.8% |
| Thermal decomposition of device | 8 | 5.2% | 1% |
| Device operates differently than expectedthe device behaved unexpectedly | 4 | 2.6% | 3.9% |
| Defective devicethe device was defective | 3 | 2% | 0.6% |
| Erratic or intermittent display | 2 | 1.3% | 0% |
| Output problem | 2 | 1.3% | 1.5% |
| Alarm, failure of warning | 1 | 0.7% | 0% |
| Breakthe device broke | 1 | 0.7% | 14% |
| Coagulation in device or device ingredient | 1 | 0.7% | 0% |
| Connection error | 1 | 0.7% | 0% |
| Device displays incorrect message | 1 | 0.7% | 2.9% |
| Device emits odor | 1 | 0.7% | 0.2% |
| Device handling problem | 1 | 0.7% | 0% |
| Energy output problem | 1 | 0.7% | 3.6% |
| Failure to cut | 1 | 0.7% | 1.4% |
| Failure to deliver energy | 1 | 0.7% | 1.3% |
| Grounding malfunction | 1 | 0.7% | 0.1% |
| Improper device output | 1 | 0.7% | 0% |
| Intraprocedure, fire or flash during | 1 | 0.7% | 0.3% |
| Loss of or failure to bond | 1 | 0.7% | 0.3% |
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) | Reports | Share |
|---|---|---|
| Burn(s)a burn | 20 | 13.1% |
| Blood loss | 6 | 3.9% |
| Hemorrhage/blood loss/bleeding | 6 | 3.9% |
| Perforation | 4 | 2.6% |
| Burn, thermal | 3 | 2% |
| Stenosis | 3 | 2% |
| Electric shockan electric shock | 2 | 1.3% |
| Internal organ perforation | 2 | 1.3% |
| Numbnessnumbness | 2 | 1.3% |
| Edemaswelling from fluid | 1 | 0.7% |
| Erythemaskin redness | 1 | 0.7% |
| Injurya physical injury | 1 | 0.7% |
| Laceration(s) | 1 | 0.7% |
| Lesion | 1 | 0.7% |
| Shockshock, a collapse of the circulation | 1 | 0.7% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Electrosurgical Unit | Product code GEI | All MAUDE reports |
|---|---|---|---|
| Reports | 153 | 118,290 | 26,136,888 |
| Share of that pool | — | 0.1% | 0% |
| Classified as death, per 1,000 reports | 0 | 4 | 9 |
| Classified as injury | 41.8% | 16.7% | 36.2% |
| Classified as malfunction | 46.4% | 80.1% | 62.3% |
| Filed by the manufacturer | 75.2% | 92.4% | 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 GEI
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| LigaSure | 8,264 | 879 | 0.2% |
| VasoView Hemopro 2 | 6,633 | 686 | 0% |
| THUNDERBEAT 5 mm, 35 cm, Front-actuated Grip Type S | 4,590 | 403 | 0% |
| HF unit "ESG-400" | 2,698 | 664 | 0.1% |
| Valleylab | 2,010 | 353 | 0.3% |
| Vaso View Hemopro | 1,838 | 0 | 0.1% |
| LigaSure Impact | 1,831 | 72 | 0.3% |
| THUNDERBEAT 5 mm, 35 cm, Front-actuated Grip | 1,505 | 38 | 0.3% |
| Thunderbeat 5mm 35cm Front-Actuated Grip | 1,247 | 0 | 0.2% |
| Valleylab Ft10 | 1,203 | 2 | 0.3% |
| Vasoview Hemopro | 1,187 | 0 | 0% |
| Ligasure Advance Pistol Grip | 970 | 0 | 0% |
| Ligasure Atlas Handswitching 37cm | 924 | 0 | 0.2% |
| Edge | 859 | 171 | 0.1% |
| Force Fx | 780 | 22 | 0.4% |
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 Electrosurgical Unit reports
How many FDA reports name Electrosurgical Unit?
153 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.
What kinds of events are reported?
malfunction (46.4%), injury (41.8%) and other (7.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
insufficient device problem information (7.8%), thermal decomposition of device (5.2%), device operates differently than expected (2.6%), defective device (2%) and erratic or intermittent display (1.3%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (75.2%) and voluntary reports (9.2%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Electrosurgical Unit 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.