Reported Reactions

Devices › Thoracolumbosacral pedicle screw system

Device brand name · Instinct java system

Blocker: medical device reports filed with FDA

456 reports name it, 2012–2023. Manufacturer given most often on reports: Zimmer Spine. Product code NKB.

456
device reports naming the brand
0% of all MAUDE reports · about 33 a year
0
reports, 12 months to August 2026
0 in the 12 months before
90.6%
classified as malfunction
41.2% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 456 reports that name the brand "Blocker" (instinct java system), received between October 2012 and June 2023; the manufacturer given most often on reports is Zimmer Spine. Spellings of one product vary from report to report.

0 reports arrived in the 12 months to August 2026, and none 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 (90.6%) and injury (9.4%); across all thoracolumbosacral pedicle screw system reports (product code NKB) death is recorded in 0.3% and malfunction in 41.2%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are material deformation (74.1%), device slipped (6.6%) and break (3.3%). The patient problems coded most often are pain, failure of implant and injury. 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

0611Sep 2021: 2Oct 2021: 2Nov 2021: 11Dec 2021: 102022Jan 2022: 0Feb 2022: 0Mar 2022: 0Apr 2022: 0May 2022: 0Jun 2022: 0Jul 2022: 0Aug 2022: 0Sep 2022: 0Oct 2022: 0Nov 2022: 0Dec 2022: 02023Jan 2023: 0Feb 2023: 0Mar 2023: 0Apr 2023: 0May 2023: 0Jun 2023: 4Jul 2023: 0Aug 2023: 0Sep 2023: 0Oct 2023: 0Nov 2023: 0Dec 2023: 02024Jan 2024: 0Feb 2024: 0Mar 2024: 0Apr 2024: 0May 2024: 0Jun 2024: 0Jul 2024: 0Aug 2024: 0Sep 2024: 0Oct 2024: 0Nov 2024: 0Dec 2024: 02025Jan 2025: 0Feb 2025: 0Mar 2025: 0Apr 2025: 0May 2025: 0Jun 2025: 0Jul 2025: 0Aug 2025: 0Sep 2025: 0Oct 2025: 0Nov 2025: 0Dec 2025: 02026Jan 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

0521032012: 320122013: 32014: 2320142015: 52016: 2720162017: 572018: 7620182019: 1032020: 6420202021: 912023: 42023

Event type and report source

Event type, as classified on the report

Death0%0
Injury9.4%43
Malfunction90.6%413
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%456
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 24,738 reports carrying product code NKB. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Material deformation33874.1%5.5%
Device slipped306.6%6%
Breakthe device broke153.3%21.4%
Migration or expulsion of device143.1%4.6%
Fracturea broken bone132.9%8.1%
Unintended movement112.4%1.5%
Migrationthe device moved from where it was placed71.5%6.1%
Noise, audible71.5%0.2%
Loose or intermittent connection51.1%4.6%
Insufficient device problem information40.9%3.2%
Device dislodged or dislocated30.7%4.4%
Device operates differently than expectedthe device behaved unexpectedly30.7%2.3%
Malposition of device30.7%1.1%
Difficult to insertthe device was hard to insert20.4%0.4%
Material integrity problema problem with the device material20.4%0.6%
Mechanical problema mechanical problem20.4%1.6%
Naturally worn20.4%0.2%
Crackthe device cracked10.2%0.4%
Failure to select signal10.2%0%
Installation-related problem10.2%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
Painpain, site not specified183.9%
Failure of implant81.8%
Injurya physical injury81.8%
No patient involvement20.4%
Radiation exposure, unintended20.4%
Blood loss10.2%

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

In context

MeasureBlockerProduct code NKBAll MAUDE reports
Reports45624,73826,136,888
Share of that pool—1.8%0%
Classified as death, per 1,000 reports039
Classified as injury9.4%58.1%36.2%
Classified as malfunction90.6%41.2%62.3%
Filed by the manufacturer100%99.2%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 NKB

BrandReportsLatest 12 monthsClassified as death
CD HORIZON Spinal System9,7876340.3%
Ti Matrix Locking Cap48901.2%
Nuvasive Reline System46881.5%
Single-Inner Setscrew454190%
Closure Top440270%
CD HORIZON SOLERA VOYAGER Spinal System7752160.1%
5 5 Exp Verse Unitized Set Scr309110%
Open Implant Closure Top27700%
Unknown Mono/Polyaxial Screws39000%
CD HORIZON SOLERA Spinal System320680%
Verse Correction Key28830%
Xia 3 Titanium Blocker34070%
Mis Single Inner Setscw20990.5%
Unknown_Spine_Product596240%
Ti 12-Point Nut-11mm17400%

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 Blocker reports

How many FDA reports name Blocker?

456 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 (90.6%) and injury (9.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

material deformation (74.1%), device slipped (6.6%), break (3.3%), migration or expulsion of device (3.1%) and fracture (2.9%). 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 Blocker 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.