The LactoSorb® Graft Containment System is intended to maintain the relative position of weak bony tissue such as bone grafts, bone graft substitutes, or bone fragments from comminuted fractures. The LactoSorb® Graft Containment System is also indicated for cement restriction in total joint arthroplasty procedures. Only when used in conjunction with traditional rigid fixation, the LactoSorb® Graft Containment System is intended to maintain the relative position of weak bony tissue in trauma and reconstructive orthopedic procedures involving: long bones, flat bones, short bones, irregular bones, appendicular skeleton, thorax and ribs. When used alone (without traditional rigid fixation), the LactoSorb® Graft Containment System is intended to maintain the relative position of bone grafts or bone graft substitutes in reconstructive orthopedic procedures involving: tumor resections where bone strength has not been compromised and iliac crest harvests. The device is not intended for use in the spine. The device is not intended for load bearing applications unless used in conjunction with traditional rigid fixation.
Device Story
Resorbable graft containment system; composed of polylactic/polyglycolic acid copolymer. Device acts as a physical barrier/mesh to maintain position of bone grafts, substitutes, or fragments. Used in orthopedic trauma and reconstructive procedures; operated by surgeons. Mesh panels/sheets (0.50-2.0 mm thick) are malleable; shaped via heating in hot sterile/saline water bath or specialized heat pack; can be cut to size. Used alone or with fixation devices (sutures, screws, rivets). Provides structural containment of bone material; facilitates healing by keeping graft in place. Resorbs in vivo via hydrolysis into lactic and glycolic acids, which are metabolized by the body.
Clinical Evidence
Biocompatibility and safety/effectiveness supported by preclinical animal studies and clinical studies demonstrating the material's performance in soft and bone tissue. No specific clinical trial metrics (e.g., p-values, sensitivity) provided in the summary.
Technological Characteristics
Material: Polylactic/polyglycolic acid copolymer (bioresorbable). Form factor: Mesh panels/sheets (25x25mm to 100x100mm; 0.50-2.0mm thickness). Sensing/Actuation: None (mechanical containment). Energy: None (manual shaping via heat bath). Connectivity: None. Sterilization: Not specified.
Indications for Use
Indicated for patients requiring maintenance of bone graft, bone graft substitute, or bone fragment position in trauma and reconstructive orthopedic procedures (long, flat, short, irregular bones, appendicular skeleton, thorax, ribs) and cement restriction in total joint arthroplasty. Contraindicated for spinal use and load-bearing applications unless used with traditional rigid fixation.
Regulatory Classification
Identification
Single/multiple component metallic bone fixation appliances and accessories are devices intended to be implanted consisting of one or more metallic components and their metallic fasteners. The devices contain a plate, a nail/plate combination, or a blade/plate combination that are made of alloys, such as cobalt-chromium-molybdenum, stainless steel, and titanium, that are intended to be held in position with fasteners, such as screws and nails, or bolts, nuts, and washers. These devices are used for fixation of fractures of the proximal or distal end of long bones, such as intracapsular, intertrochanteric, intercervical, supracondylar, or condylar fractures of the femur; for fusion of a joint; or for surgical procedures that involve cutting a bone. The devices may be implanted or attached through the skin so that a pulling force (traction) may be applied to the skeletal system.
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## AUG 1 6 2004
Ko339/8 page 1 of
## 510(k) Summary
This 510(k) Summary of Safety and Effectiveness for the EBI LactoSorb® Graft Containment System is provided as required per Section 513(I)(3) of the Food, Drug and Cosmetic Act.
1. Submitter: Jon Caparotta, RAC Contact Person: Frederic Testa, RAC Manager Regulatory Affairs Telephone: 973-299-9300, EBI, L.P. ext.2208 100 Interpace Parkway Fax: 973-257-0232 Parsippany, NJ 07054
Date prepared: August 9, 2004
- EBI LactoSorb® Graft Containment System 2. Proprietary Name: Common Name: Plate, Bonc Classification Name/Code: HRS
- 3. Predicate or legally marketed devices that are substantially equivalent:
- MacroPore OS Trauma System, K021164 by MacroPore, Inc. �
- . MacroPore OS Protective Sheet, K994158 by MacroPore, Inc.
- . Synthes Resorbable Meshes & Sheets, K003788 by Synthes (USA).
- . Lorenz LactoSorb Panels and Fasteners K011139 by Biomet, Inc.
- Biomet LactoSorb Panels and Fasteners K984390 by Biomet, Inc. .
- . LactoSorb Trauma Plating System, K992355 by Biomet, Inc.
- Device Description: The LactoSorb® Graft Containment System, a resorbable graft containnent বঁ system, is made from LactoSorb, which is composed of bioresorbable, and biocompatible polymers that have been used in surgical procedures for years. LactoSorb resorbable copolymer is derived from lactic and glycolic acids. Polylactic/polyglycolic acid copolymer degrades and resorbs in vivo by hydrolysis to lactic and glycolic acids, which are then metabolized by the body. The LactoSorb material has been found in animal and clinical studies to be biocompatible in both soft tissue and bone tissue. Preclinical and clinical studies have proven the safety and effectiveness of these devices. They have been approved to be used in trauma and reconstructive procedures in the midface and craniofacial skeleton, and for maintaining the position of bony fragments or morselized bone graft in iliac crest autograft procedures.
The LactoSorb mesh panel/sheet is provided in sizes of 25 mm x 25 mm to 100 mm x 100 mm and in other shapes and sizes as needed for particular surgical procedures. The thickness of the mesh panel/sheet ranges from 0.50 mm to 2.0 mm, according to the region to be treated, and are provided with and without macro porous holes. The borders of the mesh panel/sheet may be aligned with holes to attach suture material.
The LactoSorb mesh panel/sheet can be malleable and shaped to conform to the specific anatomy. The mesh panel/sheet can be heated to a malleable state using a hot sterile/saline water bath (K011237) or a sterile LactoSorb® Heat Pack (K941245). The mesh panel/sheet can be cut into various shapes and sizes. EBI heat contouring pen can also be used for both cutting and insitu shaping of the mesh panel/sheet. The mesh panel/sheet can be used either alone or in conjunction with fixation devices such as resorbable sutures, screws and rivets to keep the device
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K033918 pg-xf
in place. Various manual instruments are available to implant the LactoSorb® Graft Containment System.
- Intended Use: The LactoSorb® Graft Containment System is intended to maintin the relative เก้ position of weak bony tissue such as bone grafts, bone graft substitutes, or bone fragments from work position of weak bony rissue such as bone graits, bone gran is also indicated for cement comminuted fractures. The Lactorol - Grate Commission with traditional rigid fixation, the LactoSorb® Graft Containment System is intended to maintain the relative rigid Tixation, the Lactosord "Orar Constituctive orthopedic procedures involving: Nong bones, flat bones, short bones, irregular bones, appendicular skeleton and thorax. When used alone (without traditional rigid fixation), the LactoSorb® Graft Containment System is intended to maintain the relative position of bone graft or bone graft substitutes in here and hour orthopedic procedures involving: tumor resections where bone strength has not been orthopedic procedures inverting. This device is not intended for use in the spins. The compromised and mac crest marrests. This ever and in conjunction with traditional rigid fixation.
## Comparison to the Predicate Device: 6.
There are no significant differences between the EBI LactoSorb® Graft Containment System and the following predicate devices:
- MacroPore OS Trauma System, K021164 by MacroPore, Inc. .
- MacroPore OS Protective Sheet, K994158 by MacroPore, Inc. ◆
- Synthes Resorbable Meshes & Sheets, K003788 by Synthes (USA). .
- Lorenz LactoSorb Panels and Fasteners K011139 by Biomet, Inc. �
- Biomet LactoSorb Panels and Fasteners K984390 by Biomet, Inc. .
- LactoSorb Trauma Plating System, K992355 by Biomet, Inc. .
The LactoSorb® Graft Containment System is substantially equivalent to the predicate devices in regards to intended use, material and function.
<sup>*</sup>Any statement made in conjunction with this submission of substantial couranial courance to any other product in intented only to relater the product can be lawfolly market approval of a column on an is not incolner in not is not incolusion intended only to relate the product can be be bayon the locus infined by Picked by Picked is not Pical it has big result in the Market Market Market Market Market Ma to be interpreted as an admission of ally outch 1996 of United in patin and the many of the 42520 (Docket No. 70N-0355.))
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Image /page/2/Picture/1 description: The image shows a logo with a stylized bird in flight, enclosed within a partial circle. The bird is depicted with three parallel lines forming its wings and body, giving it a sense of motion. The circle is incomplete, with small, evenly spaced dots forming the remaining arc, suggesting a sense of completion or continuity.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
AUG 1 6 2004
Mr. Jon Caparotta, RAC Manager, Regulatory Affairs EBI. L.P. 100 Interpace Parkway Parsippany, New Jersey 07054
Re: K033918
Trade Name: EBI LactoSorb® Graft Containment System Regulation Number: 21 CFR 888.3030 Regulation Name: Single/multiple component metallic bone fixation appliances and accessories Regulatory Class: II Product Code: HRS Dated: May 27, 2004 Received: May 28, 2004
Dear Mr. Caparotta:
We have reviewed your Section 510(k) premarket notification of intent to market the device we nave reviewed your becare in ad the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate for use stated in the encrosale) to regard) the enactment date of the Medical Device American processes of to connine.co. phor to May 20, 1978, are encordance with the provisions of the Federal Food, Drug, de necs that have been recises in quire approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The Tou may, dicrore, mains of the Act include requirements for annual registration, listing of general controls provision 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 If your device is exassinod (tional controls. Existing major regulations affecting your device can may be subject to back as back as a submit ons, 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 r icast of advised that i Dri brounder of our device complies with other requirements of the Act that I Dri has made a avoid regulations administered by other Federal agencies. You must or any I cacharter and tegeranents, 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. Jon Caparotta, RAC
This letter will allow you to begin marketing your device as described in your Section 510(k) I his letter will anow you to begin marketing your antial equivalence of your deversits your day premarket nothication. The FDA multig of backantal vija.
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 If you desire specific advice for your ac 1100 on ease note the regulation entitled, Contact the Office of Compilance as (s st ) >> (21CFR Part 807.97) you may obtain.
"Misbranding by reference to premarket notification" (21CFR Part 807.97) you may obtain. IMISOranuning of Tererence to premation on your responsibilities under the Act may be obtained from the Other general information on your responsional 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,
Sincerely yours,
Mark A. Wilkinson
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 of
510(k) Number (if known):
Device Name: EBI LactoSorb® Graft Containment System
Indications For Use:
The LactoSorb® Graft Containment System is intended to maintain the relative position of weak bony tissue such as bone grafts, bone graft substitutes, or bone fragments from comminuted fractures. The LactoSorb® Graft Containment System is also indicated for cement restriction in total joint arthroplasty procedures. Only when used in conjunction with traditional rigid fixation, the LactoSorb® Graft Containment System is intended to maintain the relative position of weak bony tissue in trauma and reconstructive orthopedic procedures involving: long bones, flat bones, short bones, irregular bones, appendicular skeleton, thorax and ribs. When used alone (without traditional rigid fixation), the LactoSorb® Graft Containment System is intended to maintain the relative position of bone grafts or bone graft substitutes in reconstructive orthopedic procedures involving: tumor resections where bone strength has not been compromised and iliac crest harvests. The device is not intended for use in the spine. The device is not intended for load bearing applications unless used in conjunction with traditional rigid fixation.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use (Per 21 CFR 801.109)
OR
Over-The-Counter Use (Optional Format 1-2-96)
Mark A. Miller
(Division Sign Off)
Sign-Off Division of General, Restorative, and Neurological Devices
510(k) Number K033918
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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.
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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.
4. Device detail page: chat and citations
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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.
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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.
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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.
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.