K192452 · B. Bruan Surgical, SA · FTM · Sep 3, 2020 · General, Plastic Surgery
Device Facts
Record ID
K192452
Device Name
Lyograft
Applicant
B. Bruan Surgical, SA
Product Code
FTM · General, Plastic Surgery
Decision Date
Sep 3, 2020
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.3300
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Lyograft® is intended for implantation to repair, reinforce and/or supplement soft tissue.
Device Story
Lyograft is a biological surgical mesh composed of pure, acellular, non-crosslinked bovine pericardium; features 3D collagen fiber structure with large communicating pores created via lyophilization. Supplied sterile in various rectangular sizes (8x14cm to 20x30cm). Used in general and plastic surgery; clinician rehydrates mesh in physiological saline and cuts to size using aseptic technique before suturing into place. Long-term implant; incorporates into patient tissue over time. Benefits include soft tissue reinforcement; provides scaffold for tissue integration.
Clinical Evidence
Bench testing included tensile strength, burst strength, density, DSC, FTIR, and chemical purity tests. Animal study (n=16 female New Zealand White rabbits) compared Lyograft and TUTOMESH for abdominal wall reinforcement. Histological and macroscopic examination at 12 and 24 weeks demonstrated similar local tissue reaction and integration for both devices.
Technological Characteristics
Biological surgical mesh; material: acellular, non-crosslinked bovine pericardium. 3D collagen matrix with large pores. Supplied sterile (EtO). Dimensions: 8x14cm to 20x30cm. Single-use. Rehydrated in saline prior to implantation. No electronic or software components.
Indications for Use
Indicated for patients requiring surgical repair, reinforcement, or supplementation of soft tissue where weakness exists.
Regulatory Classification
Identification
Surgical mesh is a metallic or polymeric screen intended to be implanted to reinforce soft tissue or bone where weakness exists. Examples of surgical mesh are metallic and polymeric mesh for hernia repair, and acetabular and cement restrictor mesh used during orthopedic surgery.
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food & Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
September 3, 2020
B. Bruan Surgical, SA % Robin Fatzinger Principle Consultant Oreg Consulting, LLC 2192 Martin Drive Gilbertsville, Pennsylvania 19525
Re: K192452
Trade/Device Name: Lyograft Regulation Number: 21 CFR 878.3300 Regulation Name: Surgical Mesh Regulatory Class: Class II Product Code: FTM Dated: July 31, 2020 Received: August 3, 2020
Dear Robin Fatzinger:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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
{1}------------------------------------------------
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) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; 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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). 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 (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Cindy Chowdhury, Ph.D., M.B.A. Acting Assistant Director DHT4B: Division of Infection Control and Plastic Surgery Devices OHT4: Office of Surgical and Infection Control Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
# Indications for Use
510(k) Number (if known) K192452
Device Name Lyograft
Indications for Use (Describe)
Lyograft® is intended for implantation to repair, reinforce and/or supplement soft tissue.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
### CONTINUE ON A SEPARATE PAGE IF NEEDED.
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."
{3}------------------------------------------------
# 5. 510(k) Summary as Required by 21 CFR 807.92(c).
## I. SUBMITTER
B. Braun Surgical, S.A. Carretera de Terrassa, 121 08191 Barcelona, Rubí Spain
Phone: +34 935 86 62 00 Fax: +34 935 82 95 77
Contact Person: Pau Turon Dols, Ph.D Director of R&D, Regulatory, & Ouality
Date Prepared: 06 September 2019
### II. DEVICE
Name of Device: Lyograft®
Common or Usual Name: Mesh, Surgical
Classification Name: Surgical Mesh (21 CFR 878.3300)
Regulatory Class: II
Product Code: FTM
### III. PREDICATE DEVICE
TUTOMESH®, K091142 (B. Braun Surgical, S.A. is not aware of this predicate device being subject to a design-related recall. )
Lyoplant (K970851) and Lyoplant Onlay (K122791) will be used as reference devices to support product safety. Lyoplant and Lyoplant Onlay are dura substitutes (GXQ) which are manufactured from the identical bovine pericardium material by B. Braun Melsungen AG (Carl-Braun-Straße 1 -34212 Melsungen, Germany), the parent company of B. Braun Surgical, S.A.
### IV. DEVICE DESCRIPTION
Lyograft is a biological surgical mesh comprised of pure collagen made of bovine pericardium. It is a single layered membrane of connective tissue with the collagen fibers running in three dimensions. Lyophilization causes the formation of a mesh, free of non-collagenous components, with a loose fibrous structure and large communicating pores. Lyograft is a long-term implant that will be incorporated into the patient's tissue over time.
Lyograft is supplied in various sizes ranging from 8x14cm to 20x30cm. It is provided sterile within a double blister package and is for single use. Lyograft is rehydrated in a physiological saline solution and
{4}------------------------------------------------
cut to size using aseptic technique prior to use. It is recommended to suture Lyograft in place using nonabsorbable sutures.
# V. INDICATIONS FOR USE
Lyograft® is intended for implantation to repair, reinforce and/or supplement soft tissue.
# VI. COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE DEVICE
| | TUTOMESH® - Predicate | Lyograft® - Subject Device |
|----------------------|------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
| 510(k) Number | K091142 | TBD |
| Device Class | II | II |
| Product Code | FTM | FTM |
| Panel | 878.3300 | 878.3300 |
| Intended Use | General & Plastic Surgery<br>Implanted to reinforce soft<br>tissue or bone where weakness<br>exists. | General & Plastic Surgery<br>Implanted to reinforce soft<br>tissue where weakness exists. |
| Indications for Use | This device is intended for<br>implantation to repair, reinforce<br>and/or supplement soft tissue. | Lyograft® is intended for<br>implantation to repair, reinforce<br>and/or supplement soft tissue. |
| Material Source | Bovine Pericardium | Bovine Pericardium |
| Material Type | Acellular, non-crosslinked,<br>3-dimensional Collagen Matrix | Acellular, non-crosslinked,<br>3-dimensional Collagen Matrix |
| Resorbable | Yes | Yes |
| Shape(s) | Oval | Rectangular |
| Size(s) | 10 x 16cm & 13 x 22cm | 8 x 14cm to 20 x 30cm |
| How Supplied | Double Blister Package | Double Blister Package |
| Sterilization Method | Tutoplast® Tissue Sterilization<br>Process and Gamma Irradiation | EtO |
| Reusable | Single Use | Single Use |
{5}------------------------------------------------
### VII. PERFORMANCE DATA
FDA Guidance for the Preparation of a Premarket Notification for a Surgical Mesh (March 2, 1999) was considered in determining the requirements for demonstrating substantial equivalence to the predicate device. The following performance data were provided in support of the substantial equivalence determination.
### Biocompatibility testing
The biocompatibility evaluation for Lyograft was conducted in accordance with ISO 10993-1 "Biological Evaluation of Medical Devices - Part 1: Evaluation and Testing Within a Risk Management Process," as recognized by FDA. Lyograft is considered a long term (>30 days) implant which comes in contact with tissue. The following tests have been considered per the standard:
- Cytotoxicity ●
- Sensitization
- Irritation .
- Acute Systemic toxicity ●
- Material Mediated Pyrogenicity
- Subchronic Toxicity
- Chronic Toxicity
- Hemolysis
- Genotoxicity ●
- Implantation ●
### Performance Testing - Bench
The following tests were conducted on both the subject and predicate devices to evaluate the performance characteristics and collagen purity:
- Tensile Strength
- Burst Strength ●
- Density Weight/Area ●
- DSC Analysis ●
- FTIR Analysis
- Acetic Acid Test
- Hydroxyproline Test ●
- Water Content ●
### Performance Testing - Animal
An animal study comparing the performance of Lyograft and Tutomesh for tissue reinforcement in the abdominal wall and tissue integration in a rabbit model was conducted. Sixteen (16) female New Zealand White rabbits were assigned to the following groups: Four (4) rabbits implanted with Lyograft for 12week explantation and four (4) rabbits implanted with Tutomesh for 12-week explantation; four (4) rabbits implanted with Lyograft for 24-week explantation and four (4) rabbits implanted with Tutomesh for 24week explantation. The test (Lyograft) and reference (Tutomesh) samples were cut to a defined size and sutured to the traumatized abdominal wall per standard procedure.
{6}------------------------------------------------
The test and reference surgical sites were macroscopically examined after 12 and 24 post-operative weeks subsequently explanted for further histological examination. The results for Lyograft and Tutomesh at both the 12 and 24-week time points showed similar local tissue reaction and tissue integration.
## VIII. CONCLUSIONS
The subject device, Lyograft, and the predicate device, Tutomesh, are both biological surgical made from bovine pericardium and utilize the same technological characteristics and principles to reinforce soft tissue where weakness exists. The devices have the same biocompatibility safety profile and similar performance as demonstrated in bench and animal testing described above. Any minor differences in performance test results do not raise new issues of safety. Therefore, based on these similarities, Lyograft is considered substantially equivalent to Tutomesh.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
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.