510(k) Report

510(k) · Cleared

Cleared

Isobar Spinal System

K990118510(k) TraditionalCleared Mar 22, 199968-day reviewClass II21 CFR 888.3070

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Scien'Tx USA, Inc. · MNH Orthosis, Spondylolisthesis Spinal Fixation

Cleared on Mar 22, 1999 as substantially equivalent to K980484 (Aesculap, Inc., 1998) and 3 other predicates after a 68-day review. Its family tree reaches back 4 generations to 1990. 250 later devices descend from it.

Decided
Mar 22, 1999
Review
68 days
Class
Class II
Product code
MNH
Recalls
None
Predicates
4

Its longest line of descent runs back 4 generations to K901587 (1990). 25 ancestors in all. 250 later devices descend from it, 14 citing it directly.

Other ancestors, by year clearedDescendants, by year cleared 1998: 2 other ancestors1996: 4 other ancestors1997: 2 other ancestors1995: 3 other ancestors1994: 2 other ancestors1993: 2 other ancestors1992: 5 other ancestors1990: 1 other ancestor2012: 7 descendants cleared2005: 1 descendant cleared2000: 1 descendant cleared2004: 5 descendants cleared2002: 1 descendant cleared2011: 4 descendants cleared2007: 2 descendants cleared2006: 2 descendants cleared2001: 1 descendant cleared1999: 1 descendant cleared2016: 14 descendants cleared2009: 1 descendant cleared2008: 1 descendant cleared2014: 6 descendants cleared2015: 9 descendants cleared2021: 13 descendants cleared2013: 7 descendants cleared2017: 16 descendants cleared2010: 2 descendants cleared2019: 14 descendants cleared2020: 18 descendants cleared2025: 26 descendants cleared2023: 23 descendants cleared2018: 13 descendants cleared2022: 17 descendants cleared2026: 18 descendants cleared2024: 27 descendants clearedK901587 · TSRH Sacral L-Connector · Danek Medical, Inc. · 1990K950099 · Synergy (TM) TI Posterior Spinal System · Buckman Co., Inc. · 1997K973836 · Synergy 6.35MM SS Rod with Screws for Anterior Use, Part of the Cross Medical-Synergy Anterior Spinal System · Cross Medical Products, Inc. · 1998K980484 · Aesculap Spine System Evolution · Aesculap, Inc. · 19981990200020102020
Other ancestors, by generationDescendants, by generation 1 generation back: 2 other ancestors2 generations back: 17 other ancestors3 generations back: 2 other ancestors 1 generation forward: 14 descendants2 generations forward: 18 descendants3 generations forward: 33 descendants4 generations forward: 50 descendants5 generations forward: 34 descendants6 generations forward: 36 descendants7 generations forward: 29 descendants8 generations forward: 26 descendants9 generations forward: 6 descendants10 generations forward: 3 descendants11 generations forward: 1 descendant K980484 · Aesculap Spine System Evolution · Aesculap, Inc. · 1998K973836 · Synergy 6.35MM SS Rod with Screws for Anterior Use, Part of the Cross Medical-Synergy Anterior Spinal System · Cross Medical Products, Inc. · 1998K950099 · Synergy (TM) TI Posterior Spinal System · Buckman Co., Inc. · 1997K901587 · TSRH Sacral L-Connector · Danek Medical, Inc. · 19900+5+10
  1. Root · 4 generations backK901587 TSRH Sacral L-ConnectorDanek Medical, Inc. · 1990
  2. 3 generations backK950099 Synergy (TM) TI Posterior Spinal SystemBuckman Co., Inc. · 1997
  3. 2 generations backK973836 Synergy 6.35MM SS Rod with Screws for Anterior Use, Part of the…Cross Medical Products, Inc. · 1998
  4. 1 generation backK980484 Aesculap Spine System EvolutionAesculap, Inc. · 1998
  5. This deviceK990118 Isobar Spinal SystemScien'Tx USA, Inc. · 1999
  6. Descendant · cites it directly · 131 of its ownK061162 Bar Pedicle Screw Spinal Fixation System, Model 2020Applied Spine Technologies, Inc. · 2006
  7. Descendant · 2 generations on · 130 of its ownK092624 Firebird Spinal Fixation SystemBlackstone Medical, Inc. · 2009 · Recalled
  8. Descendant · 3 generations on · 117 of its ownK100044 Firebird Spinal Fixation System, Firebird Side-Loading BodyBlackstone · 2010
  9. Descendant · 3 generations on · 116 of its ownK122901 Firebird Spinal Fixation System, Phoenix Mis Spinal Fixation SystemOrthofix · 2012
  10. Descendant · cites it directly · 94 of its ownK013444 Isobar Spinal SystemScien'Tx USA, Inc. · 2001

Showing 5 of 250 descendants. See all descendants

Descendants cleared per year

1999: 12000: 12001: 12002: 12004: 52005: 12006: 22007: 22008: 12009: 12010: 22011: 42012: 72013: 72014: 62015: 92016: 142017: 162018: 132019: 142020: 182021: 132022: 172023: 232024: 272025: 262026: 18
1999high 27 (2024) · low 0 (2003)2026

Most influential descendants

Showing 5 of 250 · See all
  • K061162Bar Pedicle Screw Spinal Fixation System, Model 2020Applied Spine Technologies, Inc. · 2006 · cites it directly131descendants
  • K092624Firebird Spinal Fixation SystemBlackstone Medical, Inc. · 2009 · 2 generations on130descendants
  • K100044Firebird Spinal Fixation System, Firebird Side-Loading BodyBlackstone · 2010 · 3 generations on117descendants
  • K122901Firebird Spinal Fixation System, Phoenix Mis Spinal Fixation SystemOrthofix · 2012 · 3 generations on116descendants
  • K013444Isobar Spinal SystemScien'Tx USA, Inc. · 2001 · cites it directly94descendants
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
−4K901587TSRH Sacral L-ConnectorDanek Medical, Inc.1990—
−3K950099Synergy (TM) TI Posterior Spinal SystemBuckman Co., Inc.1997—
−2K973836Synergy 6.35MM SS Rod with Screws for Anterior Use, Part of the Cross…Cross Medical Products, Inc.1998—
−1K980484Aesculap Spine System EvolutionAesculap, Inc.1998—
0 (this device)K990118Isobar Spinal SystemScien'Tx USA, Inc.1999—
+1K061162Bar Pedicle Screw Spinal Fixation System, Model 2020Applied Spine Technologies, Inc.2006—
+2K092624Firebird Spinal Fixation SystemBlackstone Medical, Inc.20091
+3K100044Firebird Spinal Fixation System, Firebird Side-Loading BodyBlackstone2010—
+3K122901Firebird Spinal Fixation System, Phoenix Mis Spinal Fixation SystemOrthofix2012—
+1K013444Isobar Spinal SystemScien'Tx USA, Inc.2001—

Other ancestors by year cleared

Year clearedDevicesWith a Class I recall
199010
199250
199320
199420
199530
199640
199720
199820

Descendants by year cleared

Year clearedDevicesWith a Class I recall
199910
200010
200110
200210
200450
200510
200620
200720
200810
200910
201020
201140
201270
201370
201460
201590
2016140
2017160
2018130
2019140
2020180
2021130
2022170
2023230
2024270
2025260
2026180
FIG. 1 — Lineage of K990118, 1990–2026Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in MNH? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

  • Candidate predicates for a device like this, rankedin the report
  • Recall history across each candidate’s familyin the report
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What was it cleared against? (4)

Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.

TypeNumberDeviceApplicantDecidedRecalls
*K980484Aesculap Spine System Evolution
Summary page 1
…em has similar design characteristics, i.e., material, screw size, lateral screw/rod connection, crosslinking connectors and indications, as the Spine System® Evolution (K980484/K982914), Synergy™ (K950099) and Mirage (K951846) systems distributed by Aesculap, Cross Medical and Alphatec Manufacturing, resp…
Aesculap, Inc.1998—
*K982914Aesculap Spine System Evolution: Additional Components
Summary page 1
…imilar design characteristics, i.e., material, screw size, lateral screw/rod connection, crosslinking connectors and indications, as the Spine System® Evolution (K980484/K982914), Synergy™ (K950099) and Mirage (K951846) systems distributed by Aesculap, Cross Medical and Alphatec Manufacturing, respectively…
Aesculap, Inc.1998—
*K950099Synergy (TM) TI Posterior Spinal System
Summary page 1
…teristics, i.e., material, screw size, lateral screw/rod connection, crosslinking connectors and indications, as the Spine System® Evolution (K980484/K982914), Synergy™ (K950099) and Mirage (K951846) systems distributed by Aesculap, Cross Medical and Alphatec Manufacturing, respectively. o,…
Buckman Co., Inc.1997—
*K951846Mirage Spinal System for Severe Spondylolisthesis
Summary page 1
…rial, screw size, lateral screw/rod connection, crosslinking connectors and indications, as the Spine System® Evolution (K980484/K982914), Synergy™ (K950099) and Mirage (K951846) systems distributed by Aesculap, Cross Medical and Alphatec Manufacturing, respectively. o, & e _,f' _/C DEPART…
Alphatec Mfg., Inc.1996—

Also cleared against K980484: 1 other device →

What descends from it? (250)

See all 250

14 later devices cite it directly; ranked here by how many devices descend from each in turn.

NumberDeviceApplicantDecidedDescendants
K061162Bar Pedicle Screw Spinal Fixation System, Model 2020Applied Spine Technologies, Inc.2006131
K013444Isobar Spinal SystemScien'Tx USA, Inc.200194
K110321Tiger Spine SystemCorelink, LLC201183
K001080Spine System EvolutionAesculap, Inc.200062
K020245Modification to Isobar Spinal SystemScien'Tx USA, Inc.200243
K051063Polyaxial Hemispherical Spinal ScrewsScient'X200537
K062912Scient'x Spinal SystemScient'X200736
K121786Dymaxeon Spine SystemB2b Spine Pty, Ltd.20125
K061774Nfix II Pedicle Screw SystemN Spine, Inc.20062
K991326Isobar Semi-Rigid Spinal SystemScien'Tx USA, Inc.19992

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

What does this lineage say?

  • The line of descent spans 9 years and passes through 5 companies; a new generation was cleared every 1.1 years on median.
  • None of the 25 ancestors has a recall.
  • Of its descendants, K061162 (Applied Spine Technologies, Inc., 2006) has gone furthest, with 131 descendants of its own.
  • 1 other device also cites its predicate K980484.

How does its category compare?

All MNH devices

MNH Orthosis, Spondylolisthesis Spinal Fixation: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · MNH

8in 2016

2007: 52008: 132009: 132010: 102011: 172012: 72013: 102014: 122015: 102016: 8
2007high 17 (2011) · low 0 (2017)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · MNH

93in 2016

2007: 123 days median2008: 65 days median2009: 151 days median2010: 106 days median2011: 171 days median2012: 93 days median2013: 124 days median2014: 140 days median2015: 99 days median2016: 93 days median
2007high 171 (2011) · low 65 (2008)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · MNH

1in 2016

2009: 72012: 12013: 12016: 1
2007high 7 (2009) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · MNH

89in 2025

2007: 182008: 302009: 452010: 592011: 1072012: 4332013: 4642014: 2862015: 1522016: 2162017: 1742018: 1292019: 4032020: 4322021: 5312022: 2652023: 1212024: 3022025: 89
2007high 531 (2021) · low 18 (2007)2025

MAUDE reports naming product code MNH, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20075123018
20081365030
200913151745
201010106059
2011171710107
20127931433
2013101241464
2014121400286
201510990152
20168931216
20170—0174
20180—0129
20190—0403
20200—0432
20210—0531
20220—0265
20230—0121
20240—0302
20250—089
20260—0—

What is it indicated for?

The ISOBAR Spinal System consists of pedicle screws, rods, nuts and crosslink members utilized to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of thoracic, lumbar, and sacral spine: degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, scoliosis, kyphosis…

Read the full statement (127 words)

The ISOBAR Spinal System consists of pedicle screws, rods, nuts and crosslink members utilized to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of thoracic, lumbar, and sacral spine: degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis).

As a pedicle screw system, the ISOBAR Spinal System is intended for the treatment of severe spondylolisthesis (Grade 3 and 4) of the L5-S1 vertebrae in skeletally mature patients receiving fusion by autogenous bone graft having implants attached to the lumbar and sacral spine (L3 to sacrum) with removal of the implants after the attainment of a solid fusion.

Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.

Cite this page

510(k) Report. “K990118: Isobar Spinal System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K990118

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Record history
  • FDA decision record loaded May 2, 2026
  • Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
  • Lineage and recalls computed Nov 3, 2026
  • Page last updated Nov 3, 2026