FIBERGRAFT® BG Matrix - Bone Graft Substitute is indicated only for bony voids or gaps that are not intrinsic to the stability of the bony structure. FIBERGRAFT® BG Matrix is indicated to be gently packed into bony voids or gaps of the skeletal system (i.e., posterolateral spine, extremities and pelvis). These defects may be surgically created osseous defects or osseous defects created from traumatic injury to the bone. The product provides a bone void filler that resorbs and is replaced with bone during the healing process. FIBERGRAFT® BG Matrix must be used with autogenous bone marrow aspirate and autograft in posterolateral spine.
Device Story
Bioactive bone graft substitute; composed of 45S5 bioactive glass (granules/microspheres) and bovine type I collagen. Hydrated with saline, blood, or bone marrow aspirate (BMA) to form moldable, non-setting putty. Applied by surgeon to bony voids/gaps; provides osteoconductive scaffold; resorbs and replaced by bone during healing. Used in orthopedic procedures (spine, extremities, pelvis). Benefits patient by filling osseous defects to facilitate bone regeneration.
Clinical Evidence
No human clinical data. Evidence based on bench testing (physical/chemical properties, packaging, shelf-life, endotoxin) and two animal studies. Rabbit posterolateral spine fusion study (n=53) and rabbit distal femur defect study (n=42) evaluated performance through 26-week follow-up using radiographic, histological, histomorphometric, and biomechanical endpoints. Results demonstrated substantial equivalence to predicate and positive controls.
Technological Characteristics
Osteoconductive, resorbable, biocompatible bone graft substitute. Materials: 45S5 bioactive glass (M-45 granules, MS-45 microspheres) and bovine type I collagen. Form factor: moldable putty when hydrated. Biocompatibility per ISO 10993. Non-electronic, no software.
Indications for Use
Indicated for patients with non-structural bony voids or gaps in the skeletal system, including posterolateral spine, extremities, and pelvis, resulting from surgery or trauma. Must be used with autogenous bone marrow aspirate and autograft for posterolateral spine applications.
Regulatory Classification
Identification
A resorbable calcium salt bone void filler device is a resorbable implant intended to fill bony voids or gaps of the extremities, spine, and pelvis that are caused by trauma or surgery and are not intrinsic to the stability of the bony structure.
Special Controls
*Classification.* Class II (special controls). The special control for this device is the FDA guidance document entitled “Class II Special Controls Guidance: Resorbable Calcium Salt Bone Void Filler Device; Guidance for Industry and FDA.” See § 888.1(e) of this chapter for the availability of this guidance.
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April 6, 2018
Prosidyan, Inc. % Janice M. Hogan Regulatory Counsel Hogan Lovells US LLP 1735 Market Street, Suite 2300 Philadelphia, Pennsylvania 19103
Re: K180080
Trade/Device Name: FIBERGRAFT® BG Matrix Bone Graft Substitute Regulation Number: 21 CFR 888.3045 Regulation Name: Resorbable calcium salt bone void filler device Regulatory Class: Class II Product Code: MOV Dated: January 10, 2018 Received: January 10, 2018
Dear Ms. Hogan:
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 of medical device-related adverse events) (21 CFR 803); good
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manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
# 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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K180080 Page 1 of 1
#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement on last page
510(k) Number (if known)
K180080
Device Name
FIBERGRAFT® BG Matrix Bone Graft Substitute
Indications for Use (Describe)
FIBERGRAFT® BG Matrix - Bone Graft Substitute is indicated only for bony voids or gaps that are not intrinsic to the stability of the bony structure. FIBERGRAFT® BG Matrix is indicated to be gently packed into bony voids or gaps of the skeletal system (i.e., posterolateral spine, extremities and pelvis). These defects may be surgically created osseous defects or osseous defects created from traumatic injury to the bone. The product provides a bone void filler that resorbs and is replaced with bone during the healing process. FIBERGRAFT® BG Matrix must be used with autogenous bone marrow aspirate and autograft in posterolateral spine.
Type of Use (Select one or both, as applicable)
X Prescription Use (Part 21 CFR 801 Subpart D) Subpart C)
□ Over-The-Counter Use (21 CFR 801
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)
This section applies only to requirements of the Paperwork Reduction Act of 1995. *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.* The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number.
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## 510(k) SUMMARY
# Prosidyan, Inc.'s FIBERGRAFT® BG Matrix - Bone Graft Substitute
# Submitter's Name, Address, Telephone Number, Contact Person and Date Prepared
Prosidvan. Inc. 30 Technology Drive Warren, NJ 07059 Phone: (610)-945-5640 Facsimile: (908) 396-1151 Contact Person: Charanpreet S. Bagga
Date Prepared: March 7, 2018
## Name of Device and Name
FIBERGRAFT® BG Matrix Bone Graft Substitute
# Common or Usual Name
Bone Void Filler
## Classification Name/CFR Requlation/Product Code
Resorbable Calcium Salt Bone Void Filler, 21 CFR 888.3045, product code MQV
## Predicate Devices
- . Novabone Products LLC, Novabone MacroFORM (K140946) (Primary predicate device)
- . Prosidyan Inc, FIBERGRAFT BG Matrix (K171284) (Reference device)
- . Prosidyan Inc, FIBERGRAFT BG Putty (K143533, K170306) (Reference device)
## Intended Use / Indications for Use
FIBERGRAFT® BG Matrix - Bone Graft Substitute is indicated only for bony voids or gaps that are not intrinsic to the stability of the bony structure. FIBERGRAFT® BG Matrix is indicated to be gently packed into bony voids or gaps of the skeletal system (i.e., posterolateral spine, extremities and pelvis). These defects may be surgically created osseous defects or osseous defects created from traumatic injury to the bone. The product provides a bone void filler that resorbs and is replaced with bone during the healing process. FIBERGRAFT® BG Matrix must be used with autogenous bone marrow aspirate and autograft in posterolateral spine.
## Device Description
FIBERGRAFT® BG Matrix product is composed of 45S5 bioactive glass components (M-45 granules, MS-45 microspheres) and bovine type I collagen. The BG Matrix after hydration with saline or blood can be applied to the defect site or can be molded into the desired shape and gently packed into the defect site as a non-setting putty. In the posterolateral spine fusion
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applications, the product is intended to be hydrated with bone marrow aspirate (BMA) and mixed with autograft in a 1:1 ratio.
The FIBERGRAFT® BG Matrix product was previously cleared in K171284. There has not been any change to the device since the last clearance.
#### Technological Characteristics
FIBERGRAFT® BG Matrix is a bioactive osteoconductive, resorbable, biocompatible bone graft substitute. The product is composed of 45S5 bioactive glass components (M-45 granules, MS-45 microspheres) and bovine type I collagen. The BG Matrix hydrated with saline or blood can be applied to the defect site or can be used as a moldable and malleable material that can be placed at the defect site. In addition, for posterolateral spine fusion applications, the product can be mixed with autograft.
The addition of collagen creates a single piece bone graft in a shape and size that is clinically relevant for ease of use during implantation.
#### Performance Data
The performance of the FIBERGRAFT® BG Matrix has been established by undertaking physical and chemical property evaluation studies, functional performance animal studies and biocompatibility tests. The physical and chemical property studies confirmed the in vitro functionality and bioactivity of the BG Matrix. The in vitro bioactivity test results have not been correlated to clinical performance. The biocompatibility of the FIBERGRAFT® BG Matrix is demonstrated by ISO 10993 testing and the long history of clinical use of the bioactive dlass material for the same intended use. In addition, the BG Matrix is composed of the same bioactive glass material and the same type and duration of patient contact as the predicates. Packaging evaluations, shelf life testing and real time aging testing were performed with passing results. Bacterial endotoxin testing was performed using the limulus amebocyte lysate (LAL) method and showed that the device meets the endotoxin limits of established guidelines .
The FIBERGRAFT® BG Matrix product was evaluated in a rabbit posterolateral spine fusion study to further support device performance for its indications for use in posterolateral spine. The FIBERGRAFT® BG Matrix product was compared to its predicate device as well as controls. The animal study evaluated device performance in critical sized cancellous bone in the posterolateral spine of 53 skeletally mature rabbits. The performance was evaluated using radiographic, histological, histomorphometric, and biomechanical data. Testing of the FIBERGRAFT® BG Matrix in the rabbit model is representative of the indications for use and range of anatomical sites proposed for the subject device. The results of the study through 26 week follow up demonstrated the performance of the FIBERGRAFT® BG Matrix device.
The FIBERGRAFT® BG Matrix product was also evaluated in a critical size distal femur defects in skeletally mature rabbits to further support device performance for its indications for use in extremities and pelvis applications. The FIBERGRAFT® BG Matrix product was compared to its predicate device as well as controls. The animal study evaluated device performance in critical sized defects in the distal femur of 42 skeletally mature rabbits. The performance was evaluated using radiographic, histomorphometric, and biomechanical data, Testing of the FIBERGRAFT® BG Matrix in the rabbit model is representative of the indications for use and range of anatomical sites proposed for the subject device. The results of the study through 26 week follow up demonstrated that the FIBERGRAFT® BG Matrix device performs substantially equivalently to the predicate device and positive control, and any minor technological differences between the device groups do not raise new types of safety or effectiveness concerns.
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Therefore, performance testing demonstrated that the FIBERGRAFT® BG Matrix device functions as intended and meets the requirements of class II bone void fillers as compared to the predicate device.
#### Substantial Equivalence
As demonstrated in performance testing, the FIBERGRAFT® BG Matrix has the same intended use and similar indications, technological characteristics, and principles of operation as its predicate device. The minor technological differences between BG Matrix and its predicate devices do not raise any new issues of safety or effectiveness. The data demonstrate that BG Matrix is substantially equivalent to the predicate devices.
#### Conclusion
FIBERGRAFT® BG Matrix is an osteoconductive, resorbable, biocompatible bone graft substitute composed of bioactive glass, mixed with Type I collagen. The FIBERGRAFT® BG Matrix is substantially equivalent to its predicate device for its intended use as a synthetic bone void filler. Performance testing, including in vivo data, demonstrated that the device functions as intended without raising new safety or effectiveness questions.
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Part 1 — Search, results, and everyday workflows 16 min
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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.
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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.
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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.
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Reading rule for every project: how many summaries do you read in full?
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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.
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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.
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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.