{
  "code": "NKB",
  "deviceName": "Thoracolumbosacral Pedicle Screw System",
  "deviceClass": "II",
  "regulationNumber": "888.3070",
  "panel": "Orthopedic",
  "definition": "Intended to provide immobilization and stabilization of spinal segments in thoracic, lumbar, and sacral spine as an adjunct to fusion.",
  "submissionTypeId": "1",
  "submissionType": "510(k)",
  "clearances": {
    "total": 905,
    "last12Months": 31
  },
  "adverseEvents": {
    "total": 3730,
    "last12Months": 816
  },
  "reviewDays": {
    "median": 76,
    "sampleSize": 905
  },
  "recalls": {
    "total": 181,
    "recent": [
      {
        "resNumber": "Z-2762-2026",
        "status": "Open, Classified",
        "recallClass": "Class II",
        "firm": "SEASPINE ORTHOPEDICS CORPORATION",
        "firmAsPublished": "SEASPINE ORTHOPEDICS CORPORATION",
        "reason": "Due to manufacturing error, polyaxial  head may popoff  from the screw intraoperatively following insertion.",
        "initiated": "2026-05-28"
      },
      {
        "resNumber": "Z-2859-2026",
        "status": "Open, Classified",
        "recallClass": null,
        "firm": "Innovasis, Inc",
        "firmAsPublished": "Innovasis, Inc",
        "reason": "Pedicle screw system intended to provide immobilization/stabilization of spinal segments as adjunct to thoracic/lumbar/sacral spine fusion may have anti-torque instrument with undersized condition which could prevent mating tip from engaging with the pedicle screw tulip and rod during tightening, which may lead to surgical delay, intervention/alternative methods to perform final tightening step.",
        "initiated": "2026-05-22"
      },
      {
        "resNumber": "Z-0478-2026",
        "status": "Open, Classified",
        "recallClass": "Class II",
        "firm": "Orthofix U.S. LLC",
        "firmAsPublished": "Orthofix U.S. LLC",
        "reason": "Polyaxial screws do not meet performance standards.",
        "initiated": "2025-09-19"
      },
      {
        "resNumber": "Z-2279-2025",
        "status": "Open, Classified",
        "recallClass": "Class II",
        "firm": "SPINEART SA",
        "firmAsPublished": "SPINEART SA",
        "reason": "Cannulated fenestrated polyaxial screws may be incorrectly labeled",
        "initiated": "2025-06-30"
      },
      {
        "resNumber": "Z-2280-2025",
        "status": "Open, Classified",
        "recallClass": "Class II",
        "firm": "SPINEART SA",
        "firmAsPublished": "SPINEART SA",
        "reason": "Cannulated fenestrated polyaxial screws may be incorrectly labeled",
        "initiated": "2025-06-30"
      }
    ]
  },
  "recentClearances": [
    {
      "kNumber": "K260362",
      "deviceName": "QUATTRO Spinal system (Open Configuration); QUATTRO-GADGET Spinal system (MIS Configuration)",
      "applicant": "MANTIZ Co., Ltd.",
      "company": "MANTIZ Co., Ltd.",
      "decisionDate": "2026-07-24",
      "dateReceived": "2026-02-04"
    },
    {
      "kNumber": "K253943",
      "deviceName": "Tiger 2 System",
      "applicant": "Zavation Medical Products, LLC",
      "company": "Zavation Medical Products, LLC",
      "decisionDate": "2026-07-24",
      "dateReceived": "2025-12-10"
    },
    {
      "kNumber": "K261284",
      "deviceName": "Invictus® Small Stature Spinal Fixation System; Invictus® 2.0 Spinal Fixation System",
      "applicant": "Alphatec Spine, Inc.",
      "company": "Alphatec Spine, Inc.",
      "decisionDate": "2026-07-14",
      "dateReceived": "2026-04-17"
    },
    {
      "kNumber": "K253802",
      "deviceName": "KHEIRON® Spinal Fixation System, including patient specific K-ROD",
      "applicant": "S.M.A.I.O",
      "company": "S.M.A.I.O",
      "decisionDate": "2026-07-01",
      "dateReceived": "2025-11-28"
    },
    {
      "kNumber": "K253045",
      "deviceName": "Socko Vimax Spinal Fixation System",
      "applicant": "Socko Medical Co., Ltd.",
      "company": "Socko Medical Co., Ltd.",
      "decisionDate": "2026-06-17",
      "dateReceived": "2025-09-22"
    },
    {
      "kNumber": "K251251",
      "deviceName": "ChanPin Pedicle Screw Spinal System",
      "applicant": "Chanpin Medtak Co., Ltd.",
      "company": "Chanpin Medtak Co., Ltd.",
      "decisionDate": "2026-06-09",
      "dateReceived": "2025-04-23"
    },
    {
      "kNumber": "K260989",
      "deviceName": "Varion Thoracolumbar Fixation System",
      "applicant": "Kyocera Medical Technologies Inc. (KMTI)",
      "company": "Kyocera Medical Technologies Inc. (KMTI)",
      "decisionDate": "2026-05-15",
      "dateReceived": "2026-03-25"
    },
    {
      "kNumber": "K253739",
      "deviceName": "SCRIPT Rods, CREO Stabilization System,  REVERE® Stabilization System, REVERE® 4.5 Stabilization System, NuVasive Reline System",
      "applicant": "Globus Medical, Inc.",
      "company": "Globus Medical, Inc.",
      "decisionDate": "2026-05-07",
      "dateReceived": "2025-11-24"
    },
    {
      "kNumber": "K261130",
      "deviceName": "AccelFix Spinal Fixation System",
      "applicant": "L&K BIOMED Co., Ltd.",
      "company": "L and K Biomed Corporation Limited",
      "decisionDate": "2026-05-05",
      "dateReceived": "2026-04-06"
    },
    {
      "kNumber": "K253966",
      "deviceName": "PERLA® TL Posterior Thoraco-lumbar Fixation System",
      "applicant": "Spineart SA",
      "company": "SPINEART SA",
      "decisionDate": "2026-05-01",
      "dateReceived": "2025-12-11"
    }
  ],
  "topApplicants": [
    {
      "name": "Medtronic Sofamor Danek USA, Inc.",
      "count": 46
    },
    {
      "name": "Medtronic Sofamor Danek",
      "count": 36
    },
    {
      "name": "Depuy Spine, Inc.",
      "count": 30
    },
    {
      "name": "Globus Medical, Inc.",
      "count": 24
    },
    {
      "name": "Stryker Spine",
      "count": 22
    }
  ],
  "topCompanies": [
    {
      "name": "Medtronic Sofamor Danek, Inc.",
      "count": 50,
      "spellings": 2
    },
    {
      "name": "Medtronic Sofamor Danek USA, Inc",
      "count": 48,
      "spellings": 2
    },
    {
      "name": "DePuy Spine, Inc.",
      "count": 30,
      "spellings": 1
    },
    {
      "name": "Globus Medical, Inc.",
      "count": 24,
      "spellings": 1
    },
    {
      "name": "Life Spine, Inc.",
      "count": 22,
      "spellings": 3
    }
  ],
  "newEntrants": [
    {
      "name": "MANTIZ Co., Ltd.",
      "since": "2026-07-24",
      "kNumber": "K260362"
    },
    {
      "name": "Socko Medical Co., Ltd.",
      "since": "2026-06-17",
      "kNumber": "K253045"
    },
    {
      "name": "Chanpin Medtak Co., Ltd.",
      "since": "2026-06-09",
      "kNumber": "K251251"
    },
    {
      "name": "Kyocera Medical Technologies Inc. (KMTI)",
      "since": "2026-05-15",
      "kNumber": "K260989"
    },
    {
      "name": "ZheJiang Decans Medical Devices Co., Ltd.",
      "since": "2026-04-29",
      "kNumber": "K252542"
    },
    {
      "name": "Osteomni, Inc.",
      "since": "2026-02-24",
      "kNumber": "K254247"
    },
    {
      "name": "Box Spine, LLC",
      "since": "2026-02-23",
      "kNumber": "K253169"
    },
    {
      "name": "Highridge Medical, LLC",
      "since": "2025-12-17",
      "kNumber": "K253093"
    }
  ],
  "baseline": {
    "months": [
      {
        "month": "2023-01-01",
        "observed": 43,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-02-01",
        "observed": 53,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-03-01",
        "observed": 96,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-04-01",
        "observed": 67,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-05-01",
        "observed": 47,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-06-01",
        "observed": 79,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-07-01",
        "observed": 55,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-08-01",
        "observed": 73,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2023-09-01",
        "observed": 126,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-01-01",
        "observed": 360,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-02-01",
        "observed": 64,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-03-01",
        "observed": 92,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-04-01",
        "observed": 109,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-05-01",
        "observed": 153,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-06-01",
        "observed": 93,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-07-01",
        "observed": 105,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-08-01",
        "observed": 127,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-09-01",
        "observed": 173,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-10-01",
        "observed": 97,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-11-01",
        "observed": 114,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2024-12-01",
        "observed": 119,
        "expectedLow": null,
        "expectedHigh": null,
        "isSufficient": false
      },
      {
        "month": "2025-01-01",
        "observed": 84,
        "expectedLow": 0,
        "expectedHigh": 261.8325308471141,
        "isSufficient": true
      },
      {
        "month": "2025-02-01",
        "observed": 100,
        "expectedLow": 41.39887912473102,
        "expectedHigh": 133.57090557278525,
        "isSufficient": true
      },
      {
        "month": "2025-03-01",
        "observed": 95,
        "expectedLow": 57.47885452020945,
        "expectedHigh": 147.5228893696513,
        "isSufficient": true
      },
      {
        "month": "2025-04-01",
        "observed": 101,
        "expectedLow": 57.79031343775204,
        "expectedHigh": 149.93868428456054,
        "isSufficient": true
      },
      {
        "month": "2025-05-01",
        "observed": 122,
        "expectedLow": 53.572809254816846,
        "expectedHigh": 140.47919015884477,
        "isSufficient": true
      },
      {
        "month": "2025-06-01",
        "observed": 76,
        "expectedLow": 65.9931604316188,
        "expectedHigh": 149.48070470189006,
        "isSufficient": true
      },
      {
        "month": "2025-07-01",
        "observed": 53,
        "expectedLow": 83.90320651390996,
        "expectedHigh": 224.71055389168882,
        "isSufficient": true
      },
      {
        "month": "2025-08-01",
        "observed": 63,
        "expectedLow": 22.657717257986985,
        "expectedHigh": 165.30352794428381,
        "isSufficient": true
      },
      {
        "month": "2025-09-01",
        "observed": 99,
        "expectedLow": 8.861325053851797,
        "expectedHigh": 171.00089193415565,
        "isSufficient": true
      },
      {
        "month": "2025-10-01",
        "observed": 103,
        "expectedLow": 27.227153438014145,
        "expectedHigh": 154.26877566985956,
        "isSufficient": true
      },
      {
        "month": "2025-11-01",
        "observed": 133,
        "expectedLow": 28.22317143930314,
        "expectedHigh": 142.6316618104839,
        "isSufficient": true
      },
      {
        "month": "2025-12-01",
        "observed": 114,
        "expectedLow": 44.01406946542116,
        "expectedHigh": 176.98098791457818,
        "isSufficient": true
      },
      {
        "month": "2026-01-01",
        "observed": 96,
        "expectedLow": 52.76452218740609,
        "expectedHigh": 203.77817355013286,
        "isSufficient": true
      },
      {
        "month": "2026-02-01",
        "observed": 121,
        "expectedLow": 35.41670201934942,
        "expectedHigh": 166.2308106272987,
        "isSufficient": true
      },
      {
        "month": "2026-03-01",
        "observed": 99,
        "expectedLow": 47.47746297036487,
        "expectedHigh": 186.23701804101768,
        "isSufficient": true
      }
    ],
    "sufficientMonths": 15,
    "method": "ewma_alpha_0.3_sd_2 corpus_adjusted"
  },
  "signal": {
    "summary": "NKB (Thoracolumbosacral Pedicle Screw System) has three findings, most consequential first. 3 recalls opened in the last 12 months and not yet terminated (Class II) (Z-2762-2026, Z-2859-2026, Z-0478-2026). 11 first-time filers in the last 12 months, including MANTIZ Co., Ltd. and Socko Medical Co., Ltd (K260362, K253045, K251251, K260989, K252542). The code is crowded, scoring 100 of 100 — 240 companies hold a clearance here and 31 arrived in the last 12 months (NKB:crowding).",
    "severity": 75,
    "factors": [
      {
        "kind": "recall",
        "detail": "3 recalls opened in the last 12 months and not yet terminated (Class II)",
        "recordIds": [
          "Z-2762-2026",
          "Z-2859-2026",
          "Z-0478-2026"
        ],
        "severity": 75
      },
      {
        "kind": "new_entrant",
        "detail": "11 first-time filers in the last 12 months, including MANTIZ Co., Ltd. and Socko Medical Co., Ltd.",
        "recordIds": [
          "K260362",
          "K253045",
          "K251251",
          "K260989",
          "K252542"
        ],
        "severity": 50
      },
      {
        "kind": "crowding",
        "detail": "the code is crowded, scoring 100 of 100 — 240 companies hold a clearance here and 31 arrived in the last 12 months",
        "recordIds": [
          "NKB:crowding"
        ],
        "severity": 20
      }
    ],
    "sourcesChecked": [
      "predicate ancestry",
      "recalls",
      "adverse events",
      "new entrants",
      "review time",
      "crowding"
    ]
  },
  "predicatePreview": {
    "edges": [],
    "note": "FDA publishes no machine-readable predicate field, so no predicate chain is recorded for this code yet."
  },
  "sources": [
    {
      "label": "classification",
      "url": "https://api.fda.gov/device/classification.json?search=product_code%3ANKB"
    },
    {
      "label": "510k total",
      "url": "https://api.fda.gov/device/510k.json?search=product_code%3ANKB"
    },
    {
      "label": "510k recent decisions",
      "url": "https://api.fda.gov/device/510k.json?search=product_code%3ANKB"
    },
    {
      "label": "recalls",
      "url": "https://api.fda.gov/device/recall.json?search=product_code%3ANKB"
    },
    {
      "label": "enforcement",
      "url": "https://api.fda.gov/device/enforcement.json?search=openfda.product_code%3ANKB"
    },
    {
      "label": "adverse events total",
      "url": "https://api.fda.gov/device/event.json?search=device.device_report_product_code%3ANKB"
    },
    {
      "label": "registrations",
      "url": "https://api.fda.gov/device/registrationlisting.json?search=products.product_code%3ANKB"
    }
  ],
  "provenance": [
    {
      "dataset": "device/510k",
      "loadedAt": "2026-08-10T19:40:09Z",
      "ingestRun": 51,
      "exportDate": "2026-08-08"
    },
    {
      "dataset": "device/classification",
      "loadedAt": "2026-08-10T06:54:18Z",
      "ingestRun": 2,
      "exportDate": "2026-08-08"
    },
    {
      "dataset": "device/enforcement",
      "loadedAt": "2026-08-10T19:40:12Z",
      "ingestRun": 53,
      "exportDate": "2026-08-04"
    },
    {
      "dataset": "device/event",
      "loadedAt": "2026-08-11T13:49:57Z",
      "ingestRun": 73,
      "exportDate": "2026-08-11"
    },
    {
      "dataset": "device/recall",
      "loadedAt": "2026-08-10T19:40:11Z",
      "ingestRun": 52,
      "exportDate": "2026-08-08"
    },
    {
      "dataset": "device/registrationlisting",
      "loadedAt": "2026-08-10T07:06:24Z",
      "ingestRun": 10,
      "exportDate": "2026-08-08"
    }
  ],
  "retrievedAt": "2026-08-11T13:51:45.748Z"
}
