The FIREBIRD SI Fusion System is intended for fixation of sacroiliac joint disruptions, and intended for sacroliac joint fusion for conditions including sacroiliac joint disruptions and degenerative sacroiliitis.
Device Story
FIREBIRD SI Fusion System is a temporary, multi-component orthopedic fixation system. It consists of cannulated titanium alloy (Ti-6Al-4V ELI) screws (9mm, 11mm, 12mm) featuring fenestrations for bone graft material. The 11mm and 12mm screws are 3D-printed with a mid-shaft porous region designed to promote osseointegration via a microscopic roughened surface. The device is used by surgeons in a clinical setting to stabilize the sacroiliac joint. The system allows for the packing of autograft or allograft materials to facilitate fusion. The device provides mechanical fixation to address joint disruptions and degenerative conditions, aiming to reduce pain and restore stability.
Clinical Evidence
No new clinical data. Bench testing and mechanical performance data remain unchanged from predicate K200696. Nano-surface claims are supported by previously cleared in vitro studies (K200052) using human mesenchymal stem cells (HMSCs) and normal human osteoblasts, showing increased proliferation and alkaline phosphatase activity on the modified surface.
Technological Characteristics
Material: Medical-grade titanium alloy (Ti-6Al-4V ELI). Construction: 3D-printed porous mid-shaft region with open macroscopic pores and microscopic roughened surface. Dimensions: 9mm, 11mm, 12mm diameter; 25mm-70mm length. Features: Cannulated, fenestrated shaft, tapered proximal ends, dual-pitch or single-pitch threads. Sterilization: Sterile (11mm/12mm screws), non-sterile (9mm screws/instruments).
Indications for Use
Indicated for patients requiring sacroiliac joint fixation or fusion due to sacroiliac joint disruptions or degenerative sacroiliitis.
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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September 15, 2020
Image /page/0/Picture/1 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo in blue, with the words "U.S. FOOD & DRUG" stacked on top of the word "ADMINISTRATION".
Orthofix Inc. Jacki Koch Senior Regulatory Affairs Specialist 3451 Plano Parkway Lewisville, Texas 75056
Re: K201664
Trade/Device Name: FIREBIRD SI Fusion System Regulation Number: 21 CFR 888.3040 Regulation Name: Smooth Or Threaded Metallic Bone Fixation Fastener Regulatory Class: Class II Product Code: OUR Dated: June 18, 2020 Received: June 19, 2020
Dear Jacki Koch:
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 requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part
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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 (QS) 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 medical devices and radiation-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,
Colin O'Neill, M.B.E. Acting Assistant Director DHT6B: Division of Spinal Devices OHT6: Office of Orthopedic Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known)
#### K201664
Device Name FIREBIRD SI Fusion System
Indications for Use (Describe)
The FIREBIRD SI Fusion System is intended for fixation of sacroiliac joint disruptions, and intended for sacroliac joint fusion for conditions including sacroiliac joint disruptions and degenerative sacroiliitis.
Type of Use (Select *one* or *both*, as applicable)X Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
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# 510(k) SUMMARY
## FIREBIRD SI Fusion System
| 510(k) Owner Information<br>Name:<br>Address: | Orthofix Inc.<br>3451 Plano Parkway<br>Lewisville, TX 75056 |
|-----------------------------------------------------|------------------------------------------------------------------------------------|
| Telephone Number:<br>Fax Number:<br>Email: | 214-937-2100<br>214-937-3322<br>jackikoch@orthofix.com |
| Registration Number: | 2183449 |
| Contact Person: | Jacki Koch, Senior Regulatory Affairs Specialist |
| Date Prepared: | September 15, 2020 |
| Name of Device<br>Trade Name / Proprietary<br>Name: | FIREBIRD SI Fusion System |
| Common Name: | Sacroiliac Joint Fixation Bone Screw |
| Product Code: | OUR |
| Regulatory Classification: | Class II – 21 CFR § 888.3040 Smooth or threaded metallic bone<br>fixation fastener |
| Review Panel: | Orthopedic Device Panel |
| Primary Predicate: | K200696 – Orthofix Inc. – FIREBIRD SI Fusion System |
Reference Predicate Device: K200052 – Orthofix Inc. – PTC Systems Product Claims
#### Reason for 510(k) Submission:
This 510(k) submission was submitted to add nano-scale descriptors to the labeling in accordance with the FDA Guidance Document "Considering Whether an FDA-Regulated Product Involves the Application of Nanotechnology." Orthofix FIREBIRD System demonstrates the requirements for nanotechnology. The FIREBIRD SI Fusion System surface has been deliberately manipulated to produce nanoscale dimensions which exhibit specific properties.
The previously cleared indications for use, intended use, design, specifications, contraindications, warnings or precautions remain the same as previously cleared under K200696.
Furthermore, the surgical approach and implantation technique remain the same as previously cleared under K200696.
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### Device Description
The FIREBIRD SI Fusion System (formally SambaScrew 3D SI Fusion System) is a temporary multiple component system consisting of non-sterile instruments, sterile 11mm and 12mm FIREBIRD SI Screws and non-sterile 9mm FIREBIRD SI Screws. The FIREBIRD SI Screws are manufactured from medical-grade titanium alloy (Ti-6AI-4V ELI) with lengths ranging from 25mm to 70mm.
The 11mm FIREBIRD SI Screw is a cannulated screw featuring multiple fenestrations along the shaft, with a tapered proximal end and dual-pitch threads. The 12mm FIREBIRD SI Scew is a cannulated screw featuring multiple fenestrations along the shaft, with a single pitch thread on the proximal and distal ends. The 11mm and 12mm FIREBIRD SI Screws are 3D printed with a mid-shaft porous region. The porous titanium region has open macroscopic 3D pores with a microscopic roughened surface. The 9mm FIREBIRD SI Screw features multiple fenestrations along the shaft and maintains a single pitch thread along the proximal and distal ends of the screw.
The FIREBIRD SI Fusion System allows for packing of autograft and allograft materials.
### Intended Use / Indications for Use
The FIREBIRD SI Fusion System is intended for fixation of sacroiliac joint disruptions, and intended for sacroiliac joint fusion for conditions including sacroiliac joint disruptions and degenerative sacroiliitis.
#### Summary of the Technological Characteristics of the Device Compared to the Selected Predicate Devices
The technological characteristics of the FIREBIRD SI Fusion System are unchanged since the prior clearance K200696.
### PERFORMANCE DATA - Summary of Non-Clinical Test Conducted for Determination of Substantial Equivalence
The performance data of the FIREBIRD SI Fusion System are unchanged since the prior clearance K200696. No new mechanical testing was performed for the FIREBIRD SI Fusion System as there are no design changes to the device.
Nano-surface descriptors are supported by surface characterization and in vitro cellular studies using HMSCs and normal human osteoblasts (NHOst) cells previously cleared under the predicate K200052. The in vitro study results cleared under the predicate K200052 demonstrated that the PTC modified surface experienced an increased proliferation and alkaline phosphatase activity (an early osteogenic differentiation marker) in human stem cells compared to the other surfaces.
The representative surface characterization and in vitro studies from the predicate K200052 substantiate the proposed labeling changes due to equivalent design, material and manufacturing processes.
#### Conclusion
The FIREBIRD SI Fusion System continues to utilize the same intended use, indications for use, the same technological characteristics and design, same materials and the same principles of operation as previously cleared under K200696.
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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.
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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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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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.
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A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
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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.