Reported Reactions

Devices › Device, monitoring, intracranial pressure

Device brand name · Device intracranial pressure monitoring

Neuromonitor Basic Kit: medical device reports filed with FDA

757 reports name it, 1998–2026. Manufacturer given most often on reports: Codman & Shurtleff / Medos. Product code GWM.

757
device reports naming the brand
0% of all MAUDE reports · about 27 a year
18
reports, 12 months to August 2026
17 in the 12 months before
26.9%
classified as malfunction
70.9% across the product code
0.4%
classified as death, as reported
3 reports · not verified by FDA

757 medical device reports received by FDA name the brand "Neuromonitor Basic Kit" (device intracranial pressure monitoring); the manufacturer given most often on reports is Codman & Shurtleff / Medos; received from February 1998 to July 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

18 reports arrived in the 12 months to August 2026, close to the 17 of 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 (72.4%), malfunction (26.9%) and death (0.4%); across all device, monitoring, intracranial pressure reports (product code GWM) death is recorded in 1.2% and malfunction in 70.9%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are other (for use when an appropriate device code cannot be identified) (21%), explanted (8.6%) and break (8.3%). The patient problems coded most often are other (for use when an appropriate patient code cannot be identified), surgical procedure, additional and surgical procedure, repeated. 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

036Sep 2021: 0Oct 2021: 5Nov 2021: 2Dec 2021: 62022Jan 2022: 4Feb 2022: 4Mar 2022: 3Apr 2022: 0May 2022: 1Jun 2022: 3Jul 2022: 1Aug 2022: 2Sep 2022: 2Oct 2022: 5Nov 2022: 5Dec 2022: 02023Jan 2023: 2Feb 2023: 1Mar 2023: 2Apr 2023: 2May 2023: 3Jun 2023: 4Jul 2023: 2Aug 2023: 1Sep 2023: 2Oct 2023: 2Nov 2023: 3Dec 2023: 12024Jan 2024: 1Feb 2024: 1Mar 2024: 2Apr 2024: 0May 2024: 1Jun 2024: 1Jul 2024: 3Aug 2024: 0Sep 2024: 2Oct 2024: 3Nov 2024: 0Dec 2024: 12025Jan 2025: 2Feb 2025: 0Mar 2025: 0Apr 2025: 0May 2025: 3Jun 2025: 4Jul 2025: 0Aug 2025: 2Sep 2025: 1Oct 2025: 1Nov 2025: 0Dec 2025: 12026Jan 2026: 3Feb 2026: 1Mar 2026: 0Apr 2026: 1May 2026: 4Jun 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

035701998: 1319981999: 192000: 172001: 1720012002: 42003: 112004: 1020042005: 102006: 272007: 2820072008: 172009: 232010: 2920102011: 482012: 412013: 2920132014: 702015: 622016: 4820162017: 392018: 102019: 1320192020: 392021: 342022: 3020222023: 252024: 152025: 1420252026: 15

Event type and report source

Event type, as classified on the report

Death0.4%3
Injury72.4%548
Malfunction26.9%204
Other0%0
Not given0.3%2

Who filed the report

Manufacturer report99.9%756
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0.1%1

Grey bar: all 6,858 reports carrying product code GWM. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Other (for use when an appropriate device code cannot be identified)15921%3.8%
Explanted658.6%2%
Breakthe device broke638.3%11.2%
Incorrect, inadequate or imprecise result or readings607.9%8.2%
Replace597.8%3.7%
Sensor problems304%0.6%
Low readingsreadings were too low283.7%2.1%
Pressure sensor failure273.6%0.6%
False reading from device non-compliance263.4%2.4%
Device sensing problem243.2%1.3%
High readingsreadings were too high222.9%2.2%
Output problem192.5%2.6%
Unable to obtain readings192.5%3%
Device displays incorrect message182.4%4%
Device issuea problem with the device162.1%1.3%
No device output162.1%1%
Device operational issue152%1%
Failure to read input signal141.8%0.6%
Failure to zero131.7%2.5%
Pressure problem121.6%0.5%

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
Other (for use when an appropriate patient code cannot be identified)14118.6%
Surgical procedure, additional8711.5%
Surgical procedure, repeated415.4%
Surgical procedure263.4%
Failure of implant141.8%
Injurya physical injury101.3%
Therapy/non-surgical treatment, additional81.1%
Device embedded in tissue or plaque70.9%
Nonresorbable materials, unretrieved in body30.4%
Surgery, prolonged30.4%
Complaint, ill-defined20.3%
Deaththe patient died; cause not stated by this term20.3%
Intracranial hemorrhage20.3%
Painpain, site not specified20.3%
Surgical procedure, delayed20.3%

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

In context

MeasureNeuromonitor Basic KitProduct code GWMAll MAUDE reports
Reports7576,85826,136,888
Share of that pool—11%0%
Classified as death, per 1,000 reports4129
Classified as injury72.4%27.1%36.2%
Classified as malfunction26.9%70.9%62.3%
Filed by the manufacturer99.9%97%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 GWM

BrandReportsLatest 12 monthsClassified as death
Becker261180%
Duet265100%
Microsensor Ventricular Catheter Kit23121.3%
Inter-Cranial Pressure And Temperature Monitor21700%
EDM Lumbar Drainage Kit218540.5%
Exacta196372%
Olm Intracranial Pressure Monitoring Kit18005%
Exacta External Drainage And Monitoring System16700%
Cerelink Icp Probe Basic Kit154292.6%
Codman18301.6%
Strata8171632.2%
Unknown Catheter270262.2%

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 Neuromonitor Basic Kit reports

How many FDA reports name Neuromonitor Basic Kit?

757 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 18 in the latest 12 months.

What kinds of events are reported?

injury (72.4%), malfunction (26.9%) and death (0.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

other (for use when an appropriate device code cannot be identified) (21%), explanted (8.6%), break (8.3%), incorrect, inadequate or imprecise result or readings (7.9%) and replace (7.8%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (99.9%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Neuromonitor Basic Kit 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.