1) Degenerative disc disease (as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies), 2) Spinal stenosis, 3) Spondylolisthesis, 4) Spinal deformities, 5) Fractures, 6) Pseudarthrosis, 7) Tumor resection, 8) Failed previous Fusion. When used as Fixation system the multiaxial screw components are also indicated for skeletally mature patients: a. Having severe spondylolisthesis (grade 3 or 4) of the L5-S1 vertebral joint, b. Who are receiving fusion using authogeneous bone graft only, c. Who are having the device fixed or attached to the lumbar or sacral spine (L3 and below), d. Who are having the device removed after the development of solid fusion mass.
Device Story
Vertelink KOBRA Fixation System; spinal stabilization/immobilization device. Composed of titanium pedicle screws and rods. Implanted via posterior approach; open or percutaneous minimally invasive techniques. Percutaneous technique uses six small incisions (max 1.2cm) and cannulated pathways. Screws placed under fluoroscopic guidance. Used as adjunct to fusion for lumbar spine instabilities/deformities. Provides mechanical stabilization to facilitate bone fusion. Operated by surgeons in clinical/OR settings. Benefits patients by stabilizing spinal segments, addressing pain/deformity, and supporting fusion.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
Titanium pedicle screws and rods. Multiaxial screw components. Designed for posterior spinal fixation. Compatible with open or percutaneous minimally invasive surgical techniques. Fluoroscopic guidance required for placement.
Indications for Use
Indicated for skeletally mature patients with degenerative disc disease, spinal stenosis, spondylolisthesis, spinal deformities, fractures, pseudarthrosis, tumor resection, or failed previous fusion. Multiaxial screw components specifically indicated for severe spondylolisthesis (grade 3 or 4) at L5-S1, fusion with autogenous bone graft, and fixation to lumbar/sacral spine (L3 and below).
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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2 SI 1-y
Premarket Notification - Vertelink KOBRA
DEC 1 2 2003
Image /page/0/Picture/3 description: The image shows a close-up of a document with the word "ertelink" prominently displayed. The text is in a bold, sans-serif font and appears to be part of a larger title or heading. The background is dark, contrasting with the white text, and there are some blurred or obscured areas around the edges of the text.
30 Hughes, Suite 206 Irvine, CA 92618 Phone 949-455-1128 WWW.vertelink com
## SUMMARY
Submitter's name: Address:
Name of contact person:
Phone: Fax number: Vertelink corporation 30 Hughes, Suite 206 Irvine, CA 92618 949-455-1128 949-455-1158
Grea Holland Requlatory Specialists, Inc 3722 Ave. Sausalito Irvine, CA 92606 Phone: 949-262-0411 fax: 949-552-2821
Date the summary was prepared: July 2, 2003
Name of the device: Trade or proprietary name: Common or usual name: Classification name:
Vertelink KOBRA™ Fixation System Vertelink KOBRA™ Fixation System Spinal Fixation System Spinal Intervertebral Body Fixation Orthosis (per 21 CFR section 888.3060) Spondylolisthesis Spinal Fixation Device System (per 21 CFR section 888.3070) Pedicle Screw Spinal System (per 21 CFR section 888.3070)
The legally marketed device to which we are claiming equivalence [807.92(a)(3)]:
CD HORIZON® Spinal System, manufactured by Medtronic Sofamor Danek, Inc. USA. The clearance number is K030932.
Description of the device:
The Vertelink KOBRA™ Spinal Fixation System is designed to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the acute and pationic instabilities or deformities of the lumbar spine, spinal tumor and failed previous fusions. It can be used in either percutaneous or open surgery procedures.
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The system is composed of titanium pedicle screws and rods that are implanted in posterior manner either during an open surgical procedure or percutaneously using minimally invasive techniques.
In both open and percuataneous techniques the pedicle screws are placed under fluoroscopic guidance and in the percutaneous technique the pathway between the screw portals is cannulated using minimally invasive techniques. In the percutaneous fixation technique, six (6) small holes (no greater than 1.2cm) are used to introduce the construct.
Both open and percutaneous techniques use accessories and tools to provide effective placement.
Indications:
- Degenerative disc disease (as defined by back pain of discogenic 1) origin with degeneration of the disc confirmed by patient history and radiographic studies)
- Spinal stenosis 2)
- 3) Spondylolisthesis
- Spinal deformities 4)
- 5) Fractures
- Pseudarthrosis ର)
- Tumor resection 7)
- Failed previous Fusion 8)
When used as Fixation system the multiaxial screw components are also indicated for skeletally mature patients:
- a) Having severe spondylolisthesis (grade 3 or 4) of the L5-S1 vertebral joint.
- b) Who are receiving fusion using authogeneous bone graft only
- c) Who are having the device fixed or attached to the lumbar or sacral spine (L3 and bellow)
- d) Who are having the device removed after the development of solid fusion mass.
Summary of the technological characteristics of our device compared to the predicate device:
As can be seen in the Comparison section, the Vertelink KOBRA™ Fixation System and CD HORIZON® Spinal System have similar technological characteristics and are equivalent.
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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized image of an eagle with its wings spread, representing the department's mission to protect the health of all Americans.
Public Health Service
DEC 1 2 2003
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Vertelink Corporation C/o Mr. Greg Holland Regulatory Specialists, Inc. 3722 Avenue Sausalito Irvine, California 92606
Re: K032102
Trade/Device Name: Vertelink KOBRA" Spinal Fixation System Regulation Number: 21 CFR 888.3060, 21 CFR 888.3070 Regulation Name: Spinal intervertebral body fixation orthosis, Pedicle screw spinal system Regulatory Class: II Product Code: KWQ, MNH, MNH, MNI Dated: October 14, 2003 Received: October 15, 2003
Dear Mr. Holland:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA). it may be subject to such 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 I'DA'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); good manufacturing practice requirements as set 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.
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Page 2 - Mr. Greg Holland
This letter will allow you to begin marketing your device as described in your Scction 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (301) 594-4659. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely yours,
Mark N. Millman
Celia M. Witten, Ph.D., M.D. Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Page
koszloz si 510(k) Number (if known):_____________________________________________________________________________________________________________________________________________________
Device Name: Vertelink KOBRA™ Fixation System
Indications For Use:
1) Degenerative disc disease (as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies), 2) Spinal stenosis, 3) Spondylolisthesis, 4) Spinal deformities, 5) Fractures, 6) Pseudarthrosis,7) Tumor resection, 8) Failed previous Fusion. When used as Fixation system the multiaxial screw components are also indicated for skeletally mature patients: a. Having severe spondylolisthesis (grade 3 or 4) of the L5-S1 vertebral joint, b. Who are receiving fusion using authogeneous bone graft only, c. Who are having the device fixed or attached to the lumbar or sacral spine (L.3 and below), d. Who are having the device removed after the development of solid fusion mass.
| (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED) |
|--------------------------------------------------------------------------|
|--------------------------------------------------------------------------|
Concurrence of CDRH, Office of Device Evaluation (ODE)
for Mark A Milkus
Division m-Off)
Division c eral, Restorative
and Neuro gical Devices
) Nu K032102
Prescription Use
(Per 21 CFR 801.109)
OR
Over-The-Counter Use
(Optional Format 1-2-96)
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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.