NeuraGen® 3D is indicated for the repair of peripheral nerve discontinuities where gap closure can be achieved by flexion of the extremity.
Device Story
NeuraGen® 3D Nerve Guide Matrix is a resorbable implant for peripheral nerve repair. Device consists of bovine Type I collagen conduit containing a porous 3D inner matrix of collagen and glycosaminoglycan (chondroitin-6-sulfate). Implanted by surgeons to isolate nerve injury, protect the site, and provide a conduit for axonal growth across nerve gaps. Supplied sterile for single use in various diameters and lengths. Acts as a physical scaffold to facilitate natural nerve regeneration. Benefits include protection of the nerve repair site and support for axonal bridging.
Clinical Evidence
Bench testing included conduit inner diameter, angle of occlusion, enzyme digestion, permeability, and chemical residual content. Biocompatibility testing performed per ISO 10993 (cytotoxicity, sensitization, irritation, systemic toxicity, mutagenicity, pyrogenicity). Animal study conducted in a critical-sized nerve defect model in a rat to evaluate efficacy. All bench and biocompatibility tests passed or met requirements.
Technological Characteristics
Resorbable implant; bovine Type I collagen conduit; porous inner matrix of collagen and glycosaminoglycan (chondroitin-6-sulfate). Dimensions: 1.5-7 mm inner diameters, lengths up to 6.35 cm. Sterilized via ethylene oxide. Biocompatibility per ISO 10993.
Indications for Use
Indicated for repair of peripheral nerve discontinuities in patients where gap closure is achievable via extremity flexion.
Regulatory Classification
Identification
A nerve cuff is a tubular silicone rubber sheath used to encase a nerve for aid in repairing the nerve (e.g., to prevent ingrowth of scar tissue) and for capping the end of the nerve to prevent the formation of neuroma (tumors).
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Image /page/0/Picture/1 description: The image shows the word "INTEGRA." in large, bold, sans-serif font. Below the word "INTEGRA." is the phrase "LIMIT UNCERTAINTY" in a smaller, sans-serif font. To the right of the word "INTEGRA." are four black squares of varying sizes, stacked vertically. The squares appear to be a part of the logo.
#### 510(K) SUMMARY
#### NeuraGen® 3D Nerve Guide Matrix
Submitter's name and address:
Integra LifeSciences Corporation 311 Enterprise Drive Plainsboro, NJ 08536 USA
#### Contact person and telephone number:
Stephen Beier Senior Specialist, Regulatory Affairs Telephone: 609.936.5436 Facsimile: 609.275.9445
#### Date Summary was prepared:
March 14, 2014
#### Name of the device:
Proprietary Name: NeuraGen® 3D Common Name: Nerve guide matrix Classification name: Nerve Cuff (21 CFR 882.5275) Product Code: JXI
#### Substantial Equivalence:
NeuraGen® 3D is substantially equivalent in function and intended use to the predicate devices detailed in the following table.
| 510(k) Number | Product Code | Trade Name | Manufacturer |
|---------------|--------------|---------------------------|-------------------------------------|
| K011168 | JXI | NeuraGen® Nerve<br>Guide | Integra LifeSciences<br>Corporation |
| K031069 | JXI | Surgisis® Nerve Cuff | Cook Biotech<br>Incorporated |
| K002098 | JXI | SaluMedica™ Nerve<br>Cuff | SaluMedica™ L.L.C. |
| K022127 | KGN | Avagen Wound<br>Dressing | Integra LifeSciences<br>Corporation |
#### Device Description:
NeuraGen® 3D Nerve Guide Matrix is a resorbable implant for the repair of peripheral nerve discontinuities. NeuraGen® 3D Nerve Guide Matrix provides a protective environment for peripheral nerve repair after injury, and is designed to isolate and protect the nerve and to create a conduit for axonal growth across a nerve gap. NeuraGen® 3D is composed of bovine Type I collagen conduit and a porous inner matrix comprised of collagen and glycosaminoglycan (chondroitin-6-sulfate). When hydrated, NeuraGen® 3D Nerve Guide Matrix is an easy to handle, soft, pliable, non-friable, collagen conduit containing a porous three-dimensional matrix. NeuraGen® 3D Nerve Guide Matrix is supplied sterile, non-pyrogenic, for single use in a variety of sizes.
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Image /page/1/Picture/1 description: The image shows the word "INTEGRA" in all capital letters. Below the word "INTEGRA" is the phrase "LIMIT UNCERTAINTY" in smaller capital letters. To the right of the word "INTEGRA" is a graphic of four squares of varying sizes stacked on top of each other.
#### Intended Use/Indications for Use:
The NeuraGen® 3D is indicated for repair of peripheral nerve discontinuities where gap closure can be achieved by flexion of the extremity.
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lntegra LifeSciences Corporation
Traditional 510(k) Premarket Notificat
NeuraGen® 3D Nerve Guide Matrix
Image /page/2/Picture/1 description: The image shows the word "INTEGRA" in a vertical orientation. To the right of the word, there is the phrase "LIMIT UNCERTAINTY" in a smaller font size. The text is in black and white, and the image appears to be a close-up of a document or label.
Substantial Equivalence Comparison:
The NeuraGen® 3D is similar in design and materials to the predicate devices:
| Product | Indications for Use | Physical Structure | Resorbable | Range of Lengths. | Range of Diameters | of Material | Biocomp- atibility | Sterility |
|--------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------|------------|------------------------------------|------------------------------------------------------------|----------------------------------------------------------------------|--------------------|----------------------|
| NeuraGen® 3D<br>(proposed<br>device) | NeuraGen® 3D is indicated for<br>the repair of peripheral nerve<br>discontinuities where gap<br>closure can be achieved by<br>flexion of the extremity. | Collagen conduit<br>with a collagen-<br>glycosaminoglycan<br>inner matrix. | Yes. | Up to<br>6.35cm | 1.5, 2, 3, 4, 5,<br>6, 7 mm inner<br>tube diameters | Type I collagen and<br>glycosaminoglycan<br>(chondroitin-6-sulfate). | Yes. | Provided<br>sterile. |
| NeuraGen®<br>Nerve Guide | NeuraGen® Nerve Guide is<br>indicated for the repair of<br>peripheral nerve<br>discontinuities where gap<br>closure can be achieved by<br>flexion of the extremity. | Collagen conduit. | Yes. | Up to 4cm | 2, 3, 4, 5, 6, 7<br>mm inner tube<br>diameters | Type I collagen. | Yes. | Provided<br>sterile. |
| Avagen<br>Wound<br>Dressing | Avagen Wound Dressing is<br>indicated for the management<br>of wounds. | Collagen-<br>glycosaminoglycan<br>bilayer sheet. | Yes. | N/A;<br>provided<br>in sheet form. | N/A; provided<br>in sheet form. | Type I collagen and<br>glycosaminoglycan<br>(chondroitin-6-sulfate). | Yes. | Provided<br>sterile. |
| Surgisis®<br>Nerve Cuff | The Surgisis® Nerve Cuff is<br>indicated for the repair of<br>peripheral nerve<br>discontinuities where gap<br>closure can be achieved by<br>flexion of the extremity | Porcine derived<br>conduit (with or<br>without slit) | Yes. | Up to 5cm | 1.5, 2, 3, 4, 5,<br>6, and 7 mm<br>inner tube<br>diameters | Porcine small intestinal<br>submucosa (SIS). | Yes. | Provided<br>sterile. |
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lntegra LifeSciences Corporation
Traditional 510(k) Premarket Notification
NeuraGen® 3D Nerve Guide Matrix
Image /page/3/Picture/1 description: The image shows the word "INTEGRA" in a vertical orientation. To the right of the word, the phrase "LIMIT UNCERTAINTY" is written in a smaller font size, also vertically. The text is black and the background is white.
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>Sterilif | Provided<br>sterile. |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------|
| Biocomp-- atibility | Ves. |
| .<br><br>Materia | 5, and 10 Polyvinyl alcohol (PVA |
| of<br>Diameters<br>Range | mm inner tube<br>diameters<br>ನ |
| Range of<br>Lengths | 6.35 cm |
| Resorb-<br>able | Yes. |
| | Alcohol<br>Hydrogel |
| | Polyvinyl<br>conduit.<br>(PVA) |
| " See =" Physical Structure" ("Structure") " Physical Structure | ntended for use in repair of<br>with Saulbria™ Biomaterial is<br>The SaluMedica™ Nerve Cuff<br>liscontinuities and where gap<br>nerve |
| | closure can be achieved<br>exion of the extremit<br>periphera |
| Product ----------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | SaluMedica™<br>Nerve Cuff |
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Image /page/4/Picture/1 description: The image shows the word "INTEGRA." in all caps, with a period after the word. Below the word is the phrase "LIMIT UNCERTAINTY" in smaller, all-caps letters. To the right of the word "INTEGRA." are three squares stacked on top of each other. The top square is filled with a pattern of smaller squares, while the other two squares are solid black.
#### Testing and Test Results:
The NeuraGen® 3D was determined to be substantially equivalent to the listed predicate devices after rigorous testing. Specifically, bench tests performed included confirmation of inner diameter, angle of occlusion, enzyme digestion, permeability, and chemical residual content. Furthermore, biocompatibility per ISO 10993 was performed to demonstrate that the device was both safe for implantation and to further establish equivalence among predicate devices. An animal study was conducted to study the efficacy of the product in a clinically relevant, critical sized nerve defect model in a rat.
| Test | Results | Conclusions |
|-------------------------------------------|-----------------------------------------------------------------------------------------------------------------|-------------------------------|
| Conduit Inner Diameter | Each tested conduit exhibited inner diameter within specified tolerance | Pass |
| Inner Matrix Pore<br>Diameter | Average pore diameter of the inner matrix is within specified tolerance | Pass |
| Enzyme Digestion | Average enzyme digestion ≤99 AU/g | Pass |
| Residual Formaldehyde | Free formaldehyde residue ≤215 ug/device | Pass |
| Cytotoxicity - Agar<br>Diffusion | No evidence of causing cell lysis or toxicity<br>(Grade 0) | Non-cytotoxic |
| Sensitization Test | No evidence of causing delayed dermal<br>contact sensitization | Non-sensitizer |
| Irritation Test | Test article mean score consistent with<br>corresponding control mean score | Non-irritant |
| Acute Systemic Toxicity | No mortality and no evidence of systemic<br>toxicity | Non-toxic |
| Sub-Acute Systemic<br>Toxicity | No evidence of systemic toxicity and non-irritant | Non-toxic |
| Chronic Systemic<br>Toxicity | No evidence of systemic toxicity and non-irritant | Non-toxic |
| Bacterial Reverse<br>Mutation Test | Article extracts non-mutagenic to tested<br>strains | Non-mutagenic |
| Chromosomal<br>Aberration Assay | Extract equivocal | Equivocal results |
| Mouse Micronucleus<br>Assay | Article in assay non-mutagenic | Non-mutagenic |
| Endotoxin-mediated<br>pyrogenicity | Test article contained less than 0.06 EU/mL | Non-pyrogenic |
| Material-mediated<br>pyrogenicity | Animal temperatures within USP limits | Non-pyrogenic |
| Ethylene Oxide<br>Sterilization Residuals | Meets requirements of ISO 10993-7, passes<br>each of four timepoints (24 hours, 30 days,<br>total daily intake) | Residual levels<br>acceptable |
Through the examination of the device performance properties and results of the testing and characterization activities, it was demonstrated that the proposed device was substantially equivalent to the predicate devices identified.
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Image /page/5/Picture/1 description: The image shows the word "INTEGRA" in large, bold, sans-serif font. Below the word "INTEGRA" is the phrase "LIMIT UNCERTAINTY" in a smaller, sans-serif font. To the right of the word "INTEGRA" are three black squares of varying sizes, stacked vertically. The squares appear to be part of a logo or design element associated with the brand.
#### Conclusion:
The NeuraGen® 3D is substantially equivalent to the commercially marketed device, NeuraGen® Nerve Guide (K011168). Additional predicate devices to which this device demonstrates substantial equivalence include the Cook Biotech Surgisis® Nerve Cuff (K031069) the SaluMedica™ Nerve Cuff (K002098), and Avagen Wound Dressing (K022127).
The design expressed in this 510(k) Premarket Notification does not change the indications for use, intended use, or fundamental scientific technology of the predicate devices, nor does it raise any new issues of safety or effectiveness.
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Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
#### April 24, 2014
Integra LifeSciences Corporation Mr. Stephen Beier Senior Specialist, Regulatory Affairs 311 Enterprise Drive Plainsboro, NJ 08536
Re: K130557
Trade/Device Name: NeuraGen 3D Nerve Guide Matrix Regulation Number: 21 CFR 882.5275 Regulation Name: Nerve Cuff Regulatory Class: Class II Product Code: JXI Dated: March 26, 2014 Received: March 27, 2014
Dear Mr. Beier:
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
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device-related adverse events) (21 CFR 803); 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.
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/ReportalProblem/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 yours,
## Felipe Aquel -S
Carlos L. Peña, PhD, MS Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
#### Indications for Use
510(k) Number (if known) K130557
#### Device Name
NeuraGen 3D Nerve Guide Matrix
#### Indications for Use (Describe)
NeuraGen® 3D is indicated for the repair of peripheral nerve discontinuities where gap closure can be achieved by flexion of the extremity.
Type of Use (Select one or both, as applicable)
区 Prescription Use (Part 21 CFR 801 Subpart D)
O Over-The-Counter Use (21 CFR 801 Subpart C)
. .
### Please do not write below this line - continue on a separate page if needed.
FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
. ·
# Date: 2014.04.25 13:16:29 -04'00'
PSC Publishing Services (30) } +1) -6740 EP
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement on last page.
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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.