The Osteo ACL Screw™ is intended for use in interference fixation of bone-patellar tendon - bone and soft tissue grafts in anterior and posterior cruciate ligament reconstructions. The Osteo ACL Screw™ is not intended for use in and is contraindicated for 1) insufficient quality and quantity of bone for attachment of graft, 2) Blood supply limitation and/or previous infections, which could retard healing, 3) Foreign body sensitivity to the implant material. Where the material is suspected a test should be made prior to implantation to rule out sensitivity, 4) Patients with active separas or infection, 5) Conditions, which tend to limit the patient's ability or willingness to restrict activities or follow directions during the healing and rehabilitation period, 6) ACL repairs, which would not be appropriate for fixation with metallic screws.
Device Story
Osteo ACL Screw is a bioabsorbable bone fixation device used in orthopedic surgery for ACL/PCL reconstruction. It provides interference fixation for bone-patellar tendon-bone or soft tissue grafts. The device is implanted by a surgeon during reconstructive procedures. It is composed of a poly-96L/4D-lactide copolymer and tricalcium phosphate (TCP) mixture. The design features a specific driver hole and thread profile adapted from previous Linvatec BioScrew implants to ensure compatibility with existing bone taps. The screw is available in lengths of 20-30 mm and diameters of 7-11 mm. By securing the graft within the bone tunnel, the device facilitates healing and stabilization of the reconstructed ligament.
Clinical Evidence
No clinical data provided; substantial equivalence is based on design, material, and technological similarities to legally marketed predicate devices.
Technological Characteristics
Bioabsorbable interference screw composed of poly-96L/4D-lactide copolymer and tricalcium phosphate (TCP). Dimensions: 20-30 mm length, 7-11 mm diameter. Features include a specific driver hole design and thread profile compatible with Linvatec BioScrew instrumentation. Mechanical fixation device; no energy source or software.
Indications for Use
Indicated for interference fixation of bone-patellar tendon-bone and soft tissue grafts in anterior and posterior cruciate ligament (ACL/PCL) reconstructions. Contraindicated in patients with insufficient bone quality/quantity, compromised blood supply, active infection/sepsis, foreign body sensitivity to implant materials, or inability to comply with post-operative rehabilitation restrictions.
Regulatory Classification
Identification
A smooth or threaded metallic bone fixation fastener is a device intended to be implanted that consists of a stiff wire segment or rod made of alloys, such as cobalt-chromium-molybdenum and stainless steel, and that may be smooth on the outside, fully or partially threaded, straight or U-shaped; and may be either blunt pointed, sharp pointed, or have a formed, slotted head on the end. It may be used for fixation of bone fractures, for bone reconstructions, as a guide pin for insertion of other implants, or it may be implanted through the skin so that a pulling force (traction) may be applied to the skeletal system.
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K012894 pge.1 of 2
MAY - 7 2004
# 510(k) Summary Linvatec Biomaterials Osteo ACL Screw
Submitter's Name, Address, Telephone Number, and Contact Person
Linvatec Biomaterials Ltd. Tuija Annala Director, Quality and Regulatory Affairs P.O.Box 3 FIN-33721 Tampere Finland, Europe Phone: 358-3-316 5600 Facsimile: 358-3-316 5629
Bioabsorbable Interference Screw
Bone Fixation Screw
MAI and HWC
Date prepared: August 21, 2003
## Name of the device:
- A. Trade or Proprietary Name: Osteo ACL Screw
- B. Common Name:
- C. Classification Name:
Device Product Code: D.
Predicate Device:
- 1. Linvatec Biomaterials Ltd (the previous Bionx Implants, Inc.) K993073
- 2. Mitek Products Mitek Biocryl Interference Screws (K012572)
- 3. Linvatec Inc BioScrew (K933719, K952831, K973758)
- 4. Biocomposites Ltd Biolok (K993630, K002070)
## Intended Use:
The Osteo ACL Screw™ is intended for use in interference fixation of bone-patellar tendon - bone and soft tissue grafts in anterior and posterior cruciate ligament reconstructions.
The Osteo ACL Screw™ is not intended for use in and is contraindicated for 1) insufficient quality and quantity of bone for attachment of graft, 2) Blood supply limitation and/or previous infections, which could retard healing, 3) Foreign body sensitivity to the implant material. Where the material is suspected a test should be made prior to implantation to rule out sensitivity, 4) Patients with active separas or infection, 5) Conditions, which tend to limit the patient's ability or willingness to restrict activities or follow directions during the healing and rehabilitation period, 6) ACL repairs, which would not be appropriate for fixation with metallic screws.
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Page 2 of 2
## Device Description:
The device description of the Osteo ACL Screw is as follows,
- The implant is composed of mixture of poly-96L/4D-lactide copolymer and tri-calsium phosphate. The predicate devices like Mitek Biocryl Interference Screws (013572) and Biocomposites Ltd Biolok (K993630, K002070) are utilizing mixture of poly-L-lactide and tri-calsium phosphate.
- Lengths of implant are 20 30 mm -
- -Diameters of implant are 7mm-11mm.
The only modifications that were made are:
- Amendment of a new raw material option, mixture of poly-961/4D-lactide copolymer and tricalsiumphosphate (TCP).
- Design of driver hole is adapted of Linvatec BioScrew implant (K933719, -K952831, K973758).
- Thread profile is adjusted to fit with bone taps of Linvatec BioScrew implant -(K933719, K952831, K973758).
- Reference numbers for these new screw versions. These changes are updated in labelling.
- New trade name to separate it from SmartScrew ACL. This change is updated in labelling.
- Revision of insert sheet concerning adaption of instrumentation of BioScrew. -
#### Substantial Equivalence:
Linvatec Biomaterials Ltd (the previous Bionx Implants Inc.) Osteo ACL Screw is stantially equivalent to the cleared predicate devices. The applied modifications do not raise any new concerns of safety and efficacy of the implant.
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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of a stylized eagle with three stripes representing the three branches of government. The eagle is positioned to the right of a circular border containing the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA".
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAY - 7 2004
Ms. Tuija Annala Director, Quality and Regulatory Affairs Linvatec Biomaterials Ltd. P.O. Box 3 Hermiankatu 6-8 L FIN 33721 Tampere, Finland
Re: K032894
Trade/Device Name: Osteo ACL Screw™ Regulation Number: 21 CFR 888.3040 Regulation Name: Smooth or threaded metallic bone fixation fastener Regulatory Class: II Product Code: HWC Dated: February 18, 2004 Received: February 23, 2004
Dear Ms. Annala:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that 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); 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 - Ms. Tuija Annala
This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97) you may obtain. Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely vours.
Sincerely, yours,
L. Mark A. Melkerson
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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## INDICATIONS FOR USE
510(K) Number (if known): K012894
Device Name:
Osteo ACL Screw
Indications for Use:
The Osteo ACL Screw™ is intended for use in interference fixation of bone-patellar tendon - bone and soft tissue grafts in anterior and posterior cruciate ligament reconstructions.
The Osteo ACL Screw™ is not intended for use in and is contraindicated for 1) insufficient quality and quantity of bone for attachment of graft, 2) Blood supply limitation and/or previous infections, which could retard healing, 3) Foreign body sensitivity to the implant material. Where the material is suspected a test should be made prior to implantation to rule out sensitivity, 4) Patients with active sepsis or infection, 5) Conditions, which tend to limit the patient's ability or willingness to restrict activities or follow directions during the healing and rehabilitation period, 6) ACL repairs, which would not be appropriate for fixation with metallic screws.
(Flease do not write below this line - continue on another page if needed)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use
(F'er 21 CFR 801.109)/
OR Over-The-Counter Use
Mark n Miller
(Division Sign-Off)
Division of General Postonoting
I, Restorative. and Neurological Devices
510(k) Number K032894
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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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You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
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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.
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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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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.
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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.
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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.