Non-inflammatory degenerative joint disease including osteoarthritis and avascular necrosis. Rheumatoid arthritis. Correction of functional deformity. Treatment of non-union, femoral neck fracture and trochanteric fractures of the proximal femur with head involvement, unmanageable using other technique
Device Story
Renovis Bipolar Hip System is a modular hemi-arthroplasty implant replacing the natural femoral head. System consists of a highly polished CoCr alloy outer shell and a UHMWPE insert (liner and locking ring). Device functions as a bipolar construct: outer CoCr shell articulates with patient's natural acetabular cartilage; inner UHMWPE liner articulates with a modular femoral head attached to a femoral stem. Implanted by orthopedic surgeons during hip replacement procedures. Provides a bearing surface to restore joint function and mobility in patients with degenerative or traumatic hip conditions. System includes full instrumentation for surgical implantation.
Clinical Evidence
Bench testing only. Performance testing conducted in compliance with ASTM F1820-13 (Standard Test Method for Determining the Forces for Disassembly of Modular Acetabular Devices) with specific deviations for bipolar head testing.
Technological Characteristics
Materials: CoCr alloy (ISO 5832-4, ASTM F1537) and UHMWPE (ISO 5834-2). Design: Modular bipolar head with inner/outer articulation surfaces. Sterilization: Gamma radiation. Standards: ASTM F983-86, ASTM F565-04, ASTM F2033-12, ISO 11137-2, ISO 17665-1.
Indications for Use
Indicated for patients with non-inflammatory degenerative joint disease (osteoarthritis, avascular necrosis), rheumatoid arthritis, functional deformity, or proximal femur fractures (non-union, femoral neck, trochanteric) requiring hemi-arthroplasty.
Regulatory Classification
Identification
A hip joint femoral (hemi-hip) metal/polymer cemented or uncemented prosthesis is a two-part device intended to be implanted to replace the head and neck of the femur. This generic type of device includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and a snap-fit acetabular component made of an alloy, such as cobalt-chromium-molybdenum, and ultra-high molecular weight polyethylene. This generic type of device may be fixed to the bone with bone cement (§ 888.3027) or implanted by impaction.
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### Traditional 510(k) Summary as required by 21 CFR 807.92(a) K131354
| A ) Submitted by: | Renovis Surgical Technologies<br>1901 W. Lugonia Ave, Ste 340<br>Redlands, CA 92374<br>Phone: 909-557-2360<br>Fax: 909-307-8571 | | | SEP 19 2013 |
|---------------------------------|---------------------------------------------------------------------------------------------------------------------------------|--|--|-------------|
| Official Contact: | Anthony DeBenedictis<br>Vice President of Quality Assurance | | | |
| Consultant: | Sharyn Orton, Ph.D.<br>MEDIcept, Inc.<br>200 Homer Ave<br>Ashland, MA 01721 | | | |
| Prepared: | August 13, 2013 | | | |
| B) Classification Name: | Prosthesis. Hip, Hemi-, Femoral, Metal/Polymer, Cemented<br>or Uncemented | | | |
| Common Name: | Bipolar Hip System | | | |
| Proprietary Name: | Renovis Bipolar Hip System | | | |
| Device Class: | Class II | | | |
| Regulation<br>and Product Code: | 21 CFR 888.3390<br>KWY | | | |
| Classification panel: | Orthopedic | | | |
| C) Predicates: | Aesculap Bipolar Acetabular Cup, K060707, KWY<br>StelKast Bipolar Hip System, K 972961, KWY, JDI | | | |
D) Device Description:
The Renovis Bipolar Hip System includes a bipolar head and 22 mm femoral heads. The Renovis Bipolar heads are offered in a range of inner and outer dimensions from 39 to 65 mm to fit either 22 or 28 mm femoral heads. Renovis already has FDA clearance for a 28 mm femoral head (K112897).
Renovis Bipolar Hip System
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The bioolar head is a sub-component of a hip replacement construct where it assumes the function of the natural femoral head and is combined with a femoral head and hip stem. It consists of a highly polished CoCr alloy outer shell and a polyethylene insert. The ultra-highmolecular weight polyethylene (UHMWPE) insert is comprised of an inner liner and a locking ring. The bipolar head has two articulation surfaces: the outer CoCr head articulates with the patient's natural acetabular cartilage and the inner UHMWPE liner articulates with the femoral head assembled to the femoral stem. The modular CoCr alloy femoral head, is held in place within the bipolar head by a retaining ring that is pre-assembled into the polyethylene insert.
The bipolar heads and femoral heads are gamma sterilized. The system is offered with the full instrumentation required for the procedure.
E) Intended Use/Indications For Use:
- Non-inflammatory degenerative joint disease including osteoarthritis and avascular . necrosis
- Rheumatoid arthritis .
- Correction of functional deformity .
- Treatment of non-union, femoral neck fracture and trochanteric fractures of the proximal . femur with head involvement, unmanageable using other technique
- F) Substantial Equivalence Comparison and Discussion
The Renovis Bipolar Hip System application includes a bipolar head (cup) and 22 femoral head. The Bipolar Hip System:
- . Is the same technology (material and design) as the predicate devices
- Has the same or similar Indications for Use as the predicate device .
- Has the same bipolar head inner and outer dimensional sizes as the predicate devices ●
- . Uses a slightly different size femoral head than one of the predicate devices, but the same as the other predicate device ·
#### Discussion
The Renovis Bipolar Hip System is substantially equivalent to the predicate devices, and any slight differences do not raise new issues of safety or effectiveness.
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G) Performance Testing
The Renovis Bipolar Hip System has successfully undergone ASTM performance testing in compliance with ASTM F1820-13 Standard Test Method for Determining the Forces for Disassembly of Modular Acetabular Devices, but with deviations specific for testing of a bipolar head.
H) Compliance with Standards
The Renovis Bipolar Hip System complies with the following Standards:
- . ISO 5832-4:1996 Metallic materials -- Part 4: Cobalt-chromium-molybdenum casting alloy
- . ISO 5834-2:2011 Implants for surgery -- Ultra-high-molecular-weight polyethylene --Part 2: Moulded forms
- ASTM F1537-8 Standard Specification for Wrought Cobalt-28Chromium-6Molybdenum � Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539)
- ASTM F983-86 (Reapproved 2009) Standard Practice for Permanent Marking of . Orthopaedic Implant Components
- ASTM F 565-04 (Reapproved 2009)el Standard Practice for Care and Handling of . Orthopedic Implants and Instruments
- ASTM F2033-12 Standard Specification for Total Hip Joint Prosthesis and Hip . Endoprosthesis Bearing Surfaces Made of Metallic, Ceramic, and Polymeric Materials
- o ASTM F1820-13 Standard Test Method for Determining the Forces for Disassembly of Modular Acetabular Devices with deviations
- . ISO 11137-2:2006 Sterilization of health care products -- Radiation -- Part 2: Establishing the sterilization dose
- . ISO 17665-1:2006 Sterilization of health care products - Moist heat -- Part 1: Requirements for the development, validation, and routine control of a sterilization process for medical devices
## Conclusion
The results of the Renovis Bipolar Hip System performance testing indicate that the device performs as expected. The Renovis Bipolar Hip System has the same Intended Use/Indications for use as the predicate devices, and any slight differences from the predicate devices do not raise new or different issues of safety or effectiveness. Therefore, the Renovis Bipolar Hip System is substantially equivalent to the predicate devices.
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 19, 2013
Renovis Surgical Technologies, LLC % Sharyn Orton, Ph.D. MEDIcept, Incoporated 200 Homer Avenue Ashland, Massachusetts 01721
Re: K131354
Trade/Device Name: Renovis Bipolar Hip System Regulation Number: 21 CFR 888.3390 Regulation Name: Hip joint femoral (hemi-hip) metal/polymer cemented or uncemented prosthesis Regulatory Class: Class II Product Code: KWY Dated: August 14, 2013 Received: August 19, 2013
Dear Dr. Orton:
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. 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 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
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Page 2 - Sharyn Orton. Ph.D.
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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Small Manufacturers, International and Consumer Assistance at its tollfree number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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
http://www.fda.gov/McdicalDevices/Safety/ReportalProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours.
# Ronald P. Jean -S for
- Mark N: Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### Indications for Use Form
510(k) Number (if known): K131354
Device Name: Renovis Bipolar Hip System
Indications for Use:
- Non-inflammatory degenerative joint disease including osteoarthritis and avascular . necrosis
- Rheumatoid arthritis .
- Correction of functional deformity .
- Treatment of non-union, femoral neck fracture and trochanteric fractures of the proximal . femur with head involvement, unmanageable using other technique
AND/OR Prescription Use_ X (21 CFR 801 Subpart D)
Over-the-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE -- CONTINUE ON ANOTHER PAGE IF NECESSARY) ·
Concurrence of CDRH, Office of Device Evaluation (ODE)
# Elizabeth L. Frank -S
Renovis Bipolar Hip System
Traditional 510(k) Premarket Notification
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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.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
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.
Where do you find a device's intended use without opening the PDF?
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
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
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Click the citation bubbles to jump to the relevant highlight in the source document.
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.
6. Collections
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.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
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.