1. Painful, disabling joint disease of the hip from: degenerative arthritis, rheumatoid arthritis, post traumatic arthritis or late-stage avascular necrosis. 2. Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure. 3. Clinical management problems where arthrodesis or alternative techniques are less likely to achieve satisfactory results. 4. Where bone stock is of poor quality or is inadequate for other reconstructive techniques as indicated of the acetabulum.
Device Story
Sterile, single-use ceramic femoral head; component of total hip joint replacement system. Manufactured from high-purity alumina matrix with zirconia reinforcement. Used with compatible V40 taper femoral stems and acetabular inserts/cups. Implanted by orthopedic surgeons in clinical/OR settings. Functions as articulating surface for hip joint reconstruction. Provides mechanical replacement for diseased femoral head; restores joint function; reduces pain. Line extension adding 22.2mm diameter options to existing product family.
Clinical Evidence
No clinical data. Substantial equivalence supported by non-clinical laboratory testing and engineering analysis, including burst testing, fatigue testing, post-fatigue burst testing, axial pull-off, wear evaluation, range of motion, torsional resistance, and MRI safety testing.
Technological Characteristics
Material: High-purity alumina matrix with zirconia reinforcement. Form factor: 22.2mm diameter femoral head with V40 taper. Standards: ISO 7206-10, ISO 7206-13, ASTM F2345-21. Titanium coating on compatible stems tested per ISO 13179-1, ASTM F1160, F1147, F1044, F1978, F1580, F1854. Sterile, single-use.
Indications for Use
Indicated for patients with painful, disabling hip joint disease due to degenerative, rheumatoid, or post-traumatic arthritis, or late-stage avascular necrosis; patients requiring revision of previous unsuccessful hip procedures; patients where arthrodesis or other techniques are unlikely to succeed; and patients with poor bone stock or acetabular deficiencies.
Regulatory Classification
Identification
A hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis is a device intended to be implanted to replace a hip joint. This device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. The two-part femoral component consists of a femoral stem made of alloys to be fixed in the intramedullary canal of the femur by impaction with or without use of bone cement. The proximal end of the femoral stem is tapered with a surface that ensures positive locking with the spherical ceramic (aluminium oxide, A12 03 ) head of the femoral component. The acetabular component is made of ultra-high molecular weight polyethylene or ultra-high molecular weight polyethylene reinforced with nonporous metal alloys, and used with or without bone cement.
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Image /page/0/Picture/0 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, with the letters "FDA" in a blue box, followed by the words "U.S. FOOD & DRUG" in blue, and then the word "ADMINISTRATION" in a smaller font in blue.
April 24, 2024
Howmedica Osteonics Corp. dba Stryker Orthopaedics Meenakshi Verma Staff Regulatory Affairs Specialist 325 Corporate Drive Mahwah, New Jersey 07430
Re: K234025
Trade/Device Name: 22.2mm Biolox® delta Ceramic V40 Femoral Head Regulation Number: 21 CFR 888.3353 Regulation Name: Hip Joint Metal/Ceramic/Polymer Semi-Constrained Cemented Or Nonporous Uncemented Prosthesis Regulatory Class: Class II Product Code: LZO Dated: December 20, 2023 Received: December 20, 2023
Dear Meenakshi Verma/Gregg Ritter:
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 (the 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 available 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.
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Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (OS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 Part 803) for devices or postmarketing safety reporting (21 CFR Part 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 Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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).
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Sincerely,
# Limin Sun -S
Limin Sun, Ph.D. Assistant Director DHT6A: Division of Joint Arthroplasty 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) K234025
#### Device Name
22.2mm BIOLOX® delta Ceramic V40™ Femoral Heads
Indications for Use (Describe)
1. Painful, disabling joint disease of the hip from: degenerative arthritis, rheumatoid arthritis, post traumatic arthritis or late-stage avascular necrosis.
2. Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other procedure.
3. Clinical management problems where arthrodesis or alternative techniques are less likely to achieve satisfactory results.
4. Where bone stock is of poor quality or is inadequate for other reconstructive techniques as indicated of the acetabulum.
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
| Sponsor | Stryker Orthopaedics<br>325 Corporate Drive<br>Mahwah, NJ 07430 |
|----------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person | Meenakshi Verma<br>Staff Regulatory Affairs Specialist<br>Howmedica Osteonics Corp<br>325 Corporate Drive<br>Mahwah, NJ 07430<br>+0091-124-485-0600<br>meenakshi.verma4@stryker.com |
| Alternate Contact | Gregg Ritter<br>Principal Regulatory Affairs Specialist<br>Howmedica Osteonics Corp<br>325 Corporate Drive<br>Mahwah, NJ 07430<br>+1-201-831-5665<br>gregg.ritter@stryker.com |
| Date Prepared: | 21-December-2023 |
| Proprietary Name: | 22.2mm BIOLOX® delta Ceramic V40™ Femoral Heads |
| Common Name: | Total Hip Joint Replacement |
| Classification Name: | Hip joint metal/ceramic/polymer semi-constrained cemented or<br>nonporous uncemented prosthesis (21 CFR 888.3353) |
| Product Codes: | LZO |
# Legally Marketed Primary Predicate Device to Which Substantial Equivalence is Claimed:
- V40TM Biolox® delta Ceramic Femoral Heads K052718
## Reason for 510(k) Submission:
The purpose of this submission is to introduce a line extension to the existing Biolox® delta Ceramic V40™ Femoral Heads device family, specifically 22.2mm Biolox® delta Ceramic V40TM Femoral Heads, with neck length +0mm & +3mm.
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# Device Description:
The subject 22.2mm Biolox® delta Ceramic V40™ Femoral Heads with neck length +0mm and +3mm are sterile, single-use devices that are manufactured with high-purity alumina matrix with zirconia reinforcement and are compatible with the 22.2mm ID sizes of compatible acetabular inserts and UHMWPE acetabular cups. The Biolox® delta Ceramic V40TM Femoral Heads may be used in conjunction with compatible V40™ taper femoral stems and acetabular shell components to achieve reconstructive replacement of the hip joint.
# Intended Use:
The subject device has the same intended use as that specified in the predicate device 510(k) clearance.
# Indications:
The indications for use for the subject device are as follows:
- Painful, disabling joint disease of the hip resulting from: degenerative arthritis, ● rheumatoid arthritis, post-traumatic arthritis or late stage avascular necrosis.
- Revision of previous unsuccessful femoral head replacement, cup arthroplasty or other . procedure.
- Clinical management problems where arthrodesis or alternative reconstructive techniques are less likely to achieve satisfactory results.
- Where bone stock is of poor quality or is inadequate for other reconstructive techniques . as indicated by deficiencies of the acetabulum.
# Summary of Technological Characteristics:
The device comparisons and performance testing show that the 22.2mm Biolox® delta Ceramic V40TM Femoral Heads are substantially equivalent to the cited predicate V40™ Biolox® delta Ceramic Femoral Heads cleared via K052718, based on intended use, indications for use, design, material, technological characteristics, operational principles, and non-clinical performance data. The predicate femoral heads are available in an outer diameter of 28mm, 32mm, and 36mm with various neck lengths. The subject femoral heads add two 22.2mm outer diameter options to the existing Biolox® delta Ceramic V40TM Femoral Heads family.
A new vendor for the titanium coating component of compatible Accolade II hip stems was also notified as part of this submission. Coating characterization information was provided per FDA guidance. The following test standards were followed to assess the titanium coating:
- ISO 13179-1 ●
- ASTM F1160 ●
- ASTM F1147
- . ASTM F1044
- . ASTM F1978
- ASTM F1580 ●
- . ASTM F1854
# Non-Clinical Testing:
The following non-clinical laboratory testing and engineering analysis were performed to determine substantial equivalence:
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- Burst testing, Fatigue testing and post-fatigue burst testing (ISO 7206-10 and ASTM ● F2345-21)
- Axial Pull-off testing
- Wear evaluation
- Range of Motion
- Torsional resistance (ISO 7206-13) ●
- MRI Safety testing ●
# Clinical Testing:
Clinical testing was not required as a basis for demonstrating substantial equivalence.
# Conclusion:
Based upon a comparison of the intended use, indications for use, design, material, technological characteristics, operational principles, and non-clinical performance data the subject 22.2mm Biolox® delta Ceramic V40™ Femoral Heads are substantially equivalent to the predicate Biolox® delta Ceramic V40™ Femoral Heads identified in this premarket notification.
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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 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).
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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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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.