The Opulent TiNbN Coated Knee is indicated for the following: · Severe knee joint pain, loss of mobility, and disability due to: rheumatoid arthritis, traumatic arthritis, and polyarthritis. · Correction of functional deformities. - · Post-traumatic loss of knee join contour, particularly when there is patellofemoral erosion, dysfunction, and/or prior patellectomy. - Moderate valgus, varus, or flexion trauma. - · Knee fractures untreatable by other methods. - · Revision surgery where sufficient bone and soft tissue integrity are present. The Opulent TiNbN Coated Knee is intended for cemented use only. This device is for single use only.
Device Story
The Opulent TiNbN Coated Knee is a total knee prosthesis consisting of a femoral component and a tibial base plate. Both components are fabricated from Cobalt-Chromium-Molybdenum (Co-Cr-Mo) alloy and coated with Titanium Niobium Nitride (TiNbN). The device is designed for cemented, single-use implantation in patients requiring knee arthroplasty. It is available in multiple sizes and configurations (Cruciate Retaining and Posterior Stabilized) to accommodate patient anatomy. The device is implanted by orthopedic surgeons in a clinical/hospital setting. The TiNbN coating is intended to provide surface characteristics suitable for joint replacement. The device functions as a mechanical replacement for the knee joint, restoring mobility and reducing pain. It is compatible with previously cleared components of the Destiknee Total Knee System.
Clinical Evidence
Bench testing only. No clinical data provided. Mechanical testing included wear resistance, coating chemical composition, thickness, hardness, adhesion strength, roughness, and metal ion analysis. Additional mechanical performance data (contact area stress, constraint, range of motion, fatigue testing) was leveraged from identical cleared Freedom® and Destiknee devices.
Technological Characteristics
Materials: Cobalt-Chromium-Molybdenum (Co-Cr-Mo) alloy with Titanium Niobium Nitride (TiNbN) surface coating. Design: Semi-constrained cemented prosthesis, available in Cruciate Retaining (CR) and Posterior Stabilized (PS) designs, multiple sizes. Energy source: None (mechanical). Connectivity: None. Sterilization: Not specified (leveraged from predicate).
Indications for Use
Indicated for patients with severe knee pain, loss of mobility, or disability due to rheumatoid, traumatic, or polyarthritis; functional deformities; post-traumatic contour loss with patellofemoral dysfunction/prior patellectomy; moderate valgus, varus, or flexion trauma; fractures untreatable by other methods; or revision surgery with sufficient bone/soft tissue integrity.
Regulatory Classification
Identification
A knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a knee joint. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. This generic type of device includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and a tibial component or components and a retropatellar resurfacing component made of ultra-high molecular weight polyethylene. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).
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November 16, 2021
Image /page/0/Picture/1 description: The image shows the logo for 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, 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.
Meril Healthcare Pvt. Ltd. Neelam Desai Assistant Manager-Regulatory Affairs Survey No. 135/2/B & 174/2, H1-H3, Meril Park, Muktanand Marg, Chala Vapi. Gujarat 396191 INDIA
Re: K212839
Trade/Device Name: Opulent TiNbN Coated Knee Regulation Number: 21 CFR 888.3560 Regulation Name: Knee Joint Patellofemorotibial Polymer Semi-Constrained Cemented Prosthesis Regulatory Class: Class II Product Code: JWH Dated: August 31, 2021 Received: September 7, 2021
Dear Neelam Desai:
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.
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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 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,
Ting Song, Ph.D., R.A.C. Assistant Director Knee Arthroplasty Devices Team 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) K212839
Device Name Opulent TiNbN Coated Knee
Indications for Use (Describe)
The Opulent TiNbN Coated Knee is indicated for the following:
· Severe knee joint pain, loss of mobility, and disability due to: rheumatoid arthritis, traumatic arthritis, and polyarthritis.
· Correction of functional deformities.
- · Post-traumatic loss of knee join contour, particularly when there is patellofemoral erosion, dysfunction, and/or prior patellectomy.
- Moderate valgus, varus, or flexion trauma.
- · Knee fractures untreatable by other methods.
- · Revision surgery where sufficient bone and soft tissue integrity are present.
The Opulent TiNbN Coated Knee is intended for cemented use only. This device is for single use only.
| 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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Image /page/3/Picture/1 description: The image shows the word "Meril" in a sans-serif font. The word is in a light blue color, and the background is a slightly darker shade of blue. There are two small circles above the "i" in "Meril", one yellow and one white.
# 5. 510(k) SUMMARY
# 510(k) Summary
This 510(k) Summary is submitted in accordance with the requirements of 21 CFR Part 807, Section 92.
### 5.1 Applicant:
Meril Healthcare Private Limited Ground & First Floor, Survey No.173/4 & First Floor H1-H3, Meril Park, Survey No. 135/2/B & 174/2, Muktanand Marg, Chala, Vapi - 396 191, Gujarat, INDIA
### 5.2 Primary Contact Person:
Neelam Desai Assistant Manager- Regulatory Affairs Meril Healthcare Private Limited E mail: neelam.desai@merillife.com Cell: +91 9054623695
### 5.3 Secondary Contact Person:
Gayathri Nair Senior Manager- Regulatory Affairs/ Quality Assurance Meril Healthcare Private Limited E mail: gayathri.nair@merillife.com Cell: +91 9909033393
### Date prepared: August 28th, 2021 5.4
#### ર્સ્ડ Device information:
| Proprietary Name: | Opulent TiNbN Coated Knee |
|----------------------|----------------------------------------------------------------------------------------------|
| Common / Usual Name: | Total Knee prosthesis |
| Classification name: | Knee joint patellofemorotibial polymer/metal/polymer<br>semi-constrained cemented prosthesis |
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Image /page/4/Picture/1 description: The image shows the word "Meril" in a sans-serif font. The letters are a light blue color, and there are two small circles above the "i" in "Meril". The circle on the left is a darker blue, and the circle on the right is yellow. The background is a solid light blue color.
| Regulation Number: | 21 CFR 888.3560 |
|--------------------|-----------------|
| Product Code: | JWH |
| Device Class: | Class II |
### 5.6 Predicate Devices
| Subject<br>device | Equivalent<br>device category | Manufacturer | Trade name | 510(k) |
|--------------------------------------|-------------------------------|----------------------------------|---------------------------------|------------------------|
| Opulent -<br>TiNbN<br>Coated<br>Knee | Predicate device | Maxx<br>Orthopedics<br>Inc., USA | Freedom® - TiNbN<br>Coated Knee | K200912 |
| | Reference<br>device | Meril Healthcare<br>Pvt. Ltd. | Destiknee Total<br>Knee System | K160771 and<br>K172936 |
#### 5.7 Device Description:
The Opulent TiNbN Coated Knee comprises of a Femoral Component and Tibial Component as described below,
- Femoral Knee Component CR and PS (Left and Right) ●
- Tibial Component (Tibial Base Plate) ●
Each of these components is described below. These components are compatible with previously cleared components of the Destiknee Total Knee System (e.g., patellae, tibial inserts).
# Femoral Component
The femoral Component is fabricated from Cobalt-Chromium-Molybdenum (Co-Cr-Mo), coated with Titanium Niobium Nitride (TiNbN). The Femoral Component is available in two designs: Cruciate Retaining (CR) and Posterior Stabilized (PS). Each of these designs is further classified into Left and Right configurations. Each Left and Right configuration is available in eight different sizes (A to H) based on Anterior/Posterior (A/P) and Medial/Lateral (M/L) dimensions. Thus a total of thirty two (32) models are available for the Femoral Component.
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# Tibial Component (Tibial Base Plate)
The Tibial Base Plate is fabricated from Cobalt-Chromium-Molybdenum coated with TiNbN. The tibial base plate is available in eight different sizes from 1 to 8 based on Anterior/Posterior (A/P) and Medial/Lateral (M/L) dimensions.
### Indication for use: 5.8
The Opulent TiNbN Coated Knee is indicated for the following:
- . Severe knee joint pain, loss of mobility, and disability due to: rheumatoid arthritis, osteoarthritis, traumatic arthritis, and polyarthritis.
- Correction of functional deformities. ●
- Post-traumatic loss of knee join contour, particularly when there is patellofemoral . erosion, dysfunction, and/or prior patellectomy.
- . Moderate valgus, varus, or flexion trauma.
- Knee fractures untreatable by other methods. ●
- . Revision surgery where sufficient bone and soft tissue integrity are present.
The Opulent TiNbN Coated Knee is intended for cemented use only. This device is for single use only.
### Comparison of technological characteristics: 5.9
The Opulent TiNbN Coated Knee is substantially equivalent to FDA cleared Freedom TiNbN Coated Knee (K200912) from Maxx Orthopedics Inc., USA. Both have same indications, design, materials, packaging, surgical implantation technique, intended use, TiNbN coating, and the sterilization method. There is no technological difference between the subject device and the predicate device. Furthermore, subject device is also substantially equivalent to FDA cleared Destiknee Total Knee System (K160771 and K172936) with respect to CoCr Alloy base material, intended use, design, packaging, surgical implantation technique and sterilization method.
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Image /page/6/Picture/1 description: The image shows the word "Meril" in a sans-serif font. The word is in a light blue color. There is a small yellow dot above the "i" in "Meril."
# 5.10 Non clinical Performance data:
The representative samples with the TiNbN Coating, were subjected to the following mechanical tests to evaluate device function and performance of the coating for its intended use:
- a) Wear Resistance
- b) Coating Chemical Composition
- c) Coating Thickness
- d) Coating Hardness
- e) Coating Adhesion Strength
- Roughness f)
- g) Metal Ion Analysis
The tests 'b' through 'g' listed above were performed by DOT, GmbH on the representative samples with the TiNbN coating.
Moreover, the below listed mechanical tests are leveraged from the testing performed on *Freedom® Total Knee System (K082019 Femoral Component (PS), K090411 Tibial Base Plate Component and K091280 Femoral Component (CR) and *Destiknee Total Knee System (K172936 and K160771)). The cleared devices are identical to the subject devices, except that the subject devices have a TiNbN coating on the surface. However, the TiNbN coating does not have any effect on these tests and hence, the testing performed on the cleared uncoated Freedom® and Destiknee devices can be leveraged for the subject devices.
- Tibial-Femoral Contact Area Stress and Surface Stress Testing
- Tibial-Femoral Constraint Testing
- Range of motion analysis
- Patello-Femoral Lateral Subluxation
- Patello-Femoral Contact Area Stress and Surface Stress Testing ●
- Tibial Tray Locking Mechanisms Testing .
- Finite Element Analysis of Tibial Tray .
- . Tibial base plate component fatigue testing
- . Tibial Post Fatigue Strength (static and fatigue)
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Image /page/7/Picture/1 description: The image shows the word "Meril" in a sans-serif font against a blue background. The word is written in white, except for two dots above the "i". The left dot is yellow, and the right dot is white. The overall design is simple and modern.
*Meril Healthcare Pvt. Ltd., India (Meril) and Maxx Orthopedics, Inc. (Maxx) have entered into an agreement, under which Meril acts as contract manufacturer and distributor for the Freedom® Total Knee System, which includes the Freedom® TiNbN Coated Knee. Meril is also the designer of the Destiknee™ Total Knee System and their version of the TiNbN coated knee – the Opulent TiNbN Coated Knee. Maxx has licensed the design for its Freedom® Total Knee System to Meril, which Meril has used to create the Destiknee™ and Opulent TiNbN Coated Knee. Therefore, the Destiknee™ and Opulent TiNbN Coated Knee is identical to the Freedom® Total Knee System and Freedom® - TiNbN Coated Knee with respect to intended use, device design, materials, technological characteristics, and method of sterilization. Therefore, all testing on the Destiknee™, Freedom® devices and Opulent devices is applicable to each other.
# 5.11 Conclusion
The indications for use and fundamental scientific technology of the subject devices are identical to the predicate devices. Design features, materials information, predicate testing and analysis data provided in this premarket notification adequately support the substantial equivalence of Opulent TiNbN Coated Knee.
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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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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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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.
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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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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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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.