STGC-Lordotic is indicated for use in the thoracolumbar spine (T1-L5) to replace a collapsed, damaged or unstable vertebral body due to tumor or trauma (i.e. fracture). STGC-Lordotic is intended to be used with autograft in combination with supplemental fixation indicated for use in the thoracolumbar spine.
Device Story
STGC-Lordotic is a vertebral body replacement (VBR) device; single-piece titanium alloy (Ti-6Al-4V) construction; trapezoidal cross-section with hollow interior for bone graft (autograft/allograft) placement. Designed for anterior approach placement in thoracolumbar spine (T1-L5) to provide structural support following vertebral body resection or removal due to tumor or trauma. Device features 8.2° to 11.5° of endplate angulation (lordosis). Used by surgeons in clinical settings; requires supplemental fixation. Benefits patient by restoring spinal column stability after vertebral damage.
Clinical Evidence
No clinical data submitted. Substantial equivalence demonstrated via non-clinical performance testing, engineering analysis, and dimensional analysis. Bench testing included static/dynamic compression and torsion per ASTM F2077, subsidence testing per ASTM F2267, and static expulsion testing.
Indicated for patients with collapsed, damaged, or unstable vertebral bodies in the thoracolumbar spine (T1-L5) resulting from tumor or trauma (fracture). Requires use with autograft or allograft and supplemental fixation.
Regulatory Classification
Identification
A spinal intervertebral body fixation orthosis is a device intended to be implanted made of titanium. It consists of various vertebral plates that are punched into each of a series of vertebral bodies. An eye-type screw is inserted in a hole in the center of each of the plates. A braided cable is threaded through each eye-type screw. The cable is tightened with a tension device and it is fastened or crimped at each eye-type screw. The device is used to apply force to a series of vertebrae to correct “sway back,” scoliosis (lateral curvature of the spine), or other conditions.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
January 23, 2015
Cardinal Spine, LLC % Kevin Thomas, Ph.D. Vice President and Director of Regulatory Affairs PaxMed International, LLC 12264 El Camino Real, Suite 400 San Diego, California 92130
Re: K142030
Trade/Device Name: STGC-Lordotic Regulation Number: 21 CFR 888.3060 Regulation Name: Spinal intervertebral body fixation orthosis Regulatory Class: Class II Product Code: MQP Dated: December 22, 2014 Received: December 23, 2014
Dear Dr. Thomas:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
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Page 2 - Kevin Thomas, Ph.D.
forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely vours.
## Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K142030
Device Name STGC-Lordotic
Indications for Use (Describe)
STGC-Lordotic is indicated for use in the thoracolumbar spine (T1-L5) to replace a collapsed, damaged or unstable vertebral body due to tumor or trauma (i.e. fracture). STGC-Lordotic is intended to be used with autograft in combination with supplemental fixation indicated for use in the thoracolumbar spine.
Type of Use (Select one or both, as applicable)
| <span style="font-size:16px">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) |
|------------------------------------------------------------------------------------|
| <span style="font-size:16px">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) |
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# 510(k) Summary Cardinal Spine, LLC STGC-Lordotic K142030
December 22, 2014
#### ADMINISTRATIVE INFORMATION
| Manufacturer Name | Cardinal Spine, LLC<br>12307 Old LaGrange Road, Suite 105<br>Louisville, KY 40245 |
|-------------------|-----------------------------------------------------------------------------------|
| Telephone: | +1 (502) 777-4788 |
| Fax: | +1 (502) 245-5768 |
| Official Contact | Natasha Lonnon<br>Vice President |
Representative/Consultant Kevin A. Thomas, PhD Floyd G. Larson PaxMed International, LLC 12264 El Camino Real, Suite 400 San Diego, CA 92130 Telephone: +1 (858) 792-1235 +1 (858) 792-1236 Fax: Email: kthomas@paxmed.com flarson@paxmed.com
### DEVICE NAME AND CLASSIFICATION
| Trade/Proprietary Name: | STGC-Lordotic |
|----------------------------------------------|-------------------------------------------------------------------------------------|
| Common Name: | Vertebral body replacement device |
| Classification Name: | Spinal Intervertebral Body Fixation Orthosis |
| Classification Regulations:<br>Product Code: | 21 CFR 888.3060, Class II<br>MQP |
| Classification Panel<br>Reviewing Branch | Orthopedic and Rehabilitation Devices Panel<br>Anterior Spine Devices Branch (ASDB) |
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#### INDICATIONS FOR USE
STGC-Lordotic is indicated for use in the thoracolumbar spine (T1-L5) to replace a collapsed, damaged or unstable vertebral body due to tumor or trauma (i.e. fracture). STGC-Lordotic is intended to be used with autograft or allograft in combination with supplemental fixation indicated for use in the thoracolumbar spine.
#### DEVICE DESCRIPTION
STGC-Lordotic is a vertebral body replacement device manufactured from titanium allov (Ti-6Al-4V), and is available in a variety of sizes to suit the individual anatomic and clinical circumstances of each patient. STGC-Lordotic is a single-piece device manufactured using electrical discharge machining, having a trapezoidal cross section with a hollow interior to accommodate the placement of autograft or allograft bone. Intended for placement via an anterior approach, STGC-Lordotic is to be used in combination with supplemental fixation indicated for use in the thoracolumbar spine. STGC-Lordotic is provided with 8.2° to 11.5° of endplate angulation (lordosis). STGC-Lordotic is provided non-sterile to the end user.
### PERFORMANCE DATA
Non-clinical data submitted, referenced, or relied upon to demonstrate substantial equivalence included: performance testing, engineering analysis and dimensional analysis. Performance testing to demonstrate substantial equivalence included methods described in the standards ASTM F2077 Test Methods for Intervertebral Body Fusion Devices (static compression, dynamic compression, static torsion, dynamic torsion) and ASTM F2267 Standard Test Method for Measuring Load Induced Subsidence of Intervertebral Body Fusion Device Under Static Axial Compression (subsidence). Static expulsion testing also was performed. The performance data included in this submission demonstrate substantial equivalence to the predicate device K121176 and K003043.
Clinical data were not submitted in this premarket notification.
### EQUIVALENCE TO MARKETED DEVICE
Cardinal Spine, LLC has submitted information in this Premarket Notification to demonstrate that, for the purposes of FDA's regulation of medical devices, STGC-Lordotic is substantially equivalent in indications and design principles to the following legally marketed predicate devices:
STGC, Cardinal Spine LLC, K121176,
MaxFuse VBR System. Pioneer Surgical Technology, Inc., K131724, and
Surgical Titanium Mesh System, DePuy AcroMed, K003043.
The primary predicate device is K121176.
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The intended use, design, materials, and functional characteristics of the STGC-Lordotic and the predicate device STGC are substantially the same. The subject device and the predicate device STGC encompass a similar range of physical dimensions, and have similar design characteristics. The subject device and the predicate device MaxFuse VBR System also encompass a similar range of physical dimensions including the lordosis intrinsic to the devices. Any differences in the technological characteristics between the subject and predicate devices do not raise different questions of safety or effectiveness.
The subject and predicate devices all are intended to be used to provide support after resection or removal of a damaged, collapsed, or unstable vertebral body due to tumor, fracture, or other disease. The subject device and predicate devices are placed within the area of removed or resected spine and are functionally complemental internal fixation. The subject device and the predicate devices are intended to be used with bone graft.
#### CONCLUSION
The data included in this submission demonstrate substantial equivalence to the predicate devices listed above.
Overall, STGC-Lordotic has the following similarities to the predicate devices:
- has the same intended use, ●
- uses the same operating principle,
- incorporates the same basic design,
- incorporates the same or very similar materials, and ●
- is to be sterilized using the same processes. ●
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.