K113828 · MedShape, Inc. · HSB · Feb 29, 2012 · Orthopedic
Device Facts
Record ID
K113828
Device Name
DYNANAIL ANKLE ARTHRODESIS NAIL
Applicant
MedShape, Inc.
Product Code
HSB · Orthopedic
Decision Date
Feb 29, 2012
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 888.3020
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The DynaNail™ Ankle Nail is intended for tibio-talo-calcaneal fusions: Post-traumatic and degenerative arthritis. Post-traumatic or primary arthrosis involving both ankle and subtalar joints. Revision after failed ankle arthrodesis with subtalar involvement. Failed total ankle arthroplasty. Non-union ankle arthrodesis. Rheumatoid hindfoot. Absent Talus (requiring tibiocalcaneal arthrodesis). Avascular necrosis of the talus. Neuroarthropathy or neuropathic ankle deformity. Neuromuscular disease and severe deformity. Osteoarthritis. Charcot Foot. Previously infected arthrosis, second degree.
Device Story
DynaNail Ankle Arthrodesis Nail is a sterile, single-use titanium intramedullary fixation rod designed for tibiotalocalcaneal fusions. Device provides rigid fixation across arthrodesis site and in-line compression. Implanted via deployment frame and fixation screws (headed/headless). Used by surgeons in clinical settings. Provides mechanical stability to facilitate bone fusion in patients with severe hindfoot/ankle pathology. Benefits include structural support and compression to promote arthrodesis.
Clinical Evidence
Bench testing only. Functional performance analysis conducted per IM.v4 and ASTM F 1264-03 standards to compare subject device with predicate devices. Results substantiate equivalent performance.
Technological Characteristics
Titanium intramedullary fixation rod; 10, 11, 12mm diameters; 180, 220, 260, 300mm lengths. Includes titanium headed/headless fixation screws (20-110mm). Utilizes deployment frame and external frame technology for in-line compression. Sterile, single-use. Testing performed per ASTM F 1264-03.
Indications for Use
Indicated for patients requiring tibio-talo-calcaneal fusion due to post-traumatic/degenerative arthritis, primary/post-traumatic arthrosis of ankle and subtalar joints, failed ankle arthrodesis, failed total ankle arthroplasty, non-union, rheumatoid hindfoot, absent talus, avascular necrosis of the talus, neuroarthropathy, neuropathic ankle deformity, neuromuscular disease, osteoarthritis, Charcot foot, or previously infected arthrosis.
Regulatory Classification
Identification
An intramedullary fixation rod is a device intended to be implanted that consists of a rod made of alloys such as cobalt-chromium-molybdenum and stainless steel. It is inserted into the medullary (bone marrow) canal of long bones for the fixation of fractures.
Predicate Devices
DynaNail™ Ankle Nail, Intramedullary Fixation Rod (K101934)
DePuy Ace VersaNail™ Intramedullary Fixation Rod (K023115)
Submission Summary (Full Text)
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Image /page/0/Picture/0 description: The image shows the text "MEDSHAPE SOLUTIONS" in a bold, sans-serif font. The word "MEDSHAPE" is on the top line, and the word "SOLUTIONS" is on the bottom line. There is a horizontal line separating the two words. The text is black and the background is white.
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FEB 2 9 2012
## 510(k) Summary
510(k) Number: K113828
February 22, 2012 Date Prepared:
This 510(k) summary is being submitted in accordance with the requirements of 21 CFR 807.92.
#### A. Submitter:
MedShape Solutions, Inc. 1575 Northside Drive, Suite 440 Atlanta, Georgia 30318
- B. Company Contact:
Jeremy Blair Project Manager (678) 235-3319(direct) (404) 249-9158 (fax) Jeremy. Blair@MedShape.com
#### ். Device Information:
| Trade Name: | DynaNail Ankle Arthrodesis Nail |
|--------------|---------------------------------|
| Common Name: | Ankle Nail |
- D. Classification Name: Intramedullary Fixation Rod HSB 21 CFR 888.3020
- Predicate Device(s): ﻧﯩ
DynaNail™ Ankle Nail, Intramedullary Fixation Rod, K101934 DePuy Ace VersaNail™Intramedullary Fixation Rod, K023115
- F. Physical Description:
The proposed DynaNail™ is sterile, single use titanium Intramedullary Fixation Rod for use in tibiotalocalcaneal fusions. The DynaNail is available in 10, 11, and 12mm diameters and lengths of 180mm, 220mm, 260mm, and 300mm. The DynaNail is implanted with a deployment frame and fixation screws. The fixation screws are single use 5mm titanium headed and headless screws. The screws are available in lengths that range from 20 to
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110mm. Similar to existing IMFR's, the DynaNail™ provides rigid fixation across the arthrodesis site, and also provides a method of in-line compression through the nail. The nail incorporates a method of compression that is applied during implantation in the same fashion as existing nails.
### ். Indications for Use:
The DynaNail™ Ankle Nail is intended for tibio-talo-calcaneal fusions:
- Post-traumatic and degenerative arthritis. .
- Post-traumatic or primary arthrosis involving both ankle and subtalar . ioints.
- Revision after failed ankle arthrodesis with subtalar involvement. ●
- Failed total ankle arthroplasty. ●
- Non-union ankle arthrodesis. .
- Rheumatoid hindfoot. .
- Absent Talus (requiring tibiocalcaneal arthrodesis). ●
- Avascular necrosis of the talus. ●
- Neuroarthropathy or neuropathic ankle deformity. ●
- Neuromuscular disease and severe deformity.
- Osteoarthritis.
- Charcot Foot.
- Previously infected arthrosis, second degree .
#### H. Comparison of Technological Characteristics:
The DynaNail is substantially equivalent in design, function and intended use to the following predicate devices:
DynaNail™ Ankle Nail. Intramedullary Fixation Rod. K101934 DePuy Ace VersaNail™ Intramedullary Fixation Rod, K023115
The construction of the DynaNail™ body is equivalent to that of the previously cleared DynaNail™ device as well as the VersaNail™ device. The manufacture and processing of all patient contacting materials are identical to the predicate DynaNail™ K101934. The DynaNail™ device is offered in comparable diameters (10-12mm) and lengths (180-300mm) to the predicate VersaNail™. The DynaNail™ utilizes the same deployment method and external frame technology as the predicate DynaNaiI™ K101934
Image /page/1/Picture/20 description: The image shows the logo for MEDSHAPE SOLUTIONS. The word "MEDSHAPE" is in large, bold, sans-serif font, with a line underneath it. Below the line, the word "SOLUTIONS" is in a smaller, sans-serif font.
K113848
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K113828 3/3
Functional performance analysis of the predicate and proposed DynaNaiI™ and VersaNail™ were conducted per IM.v4 and ASTM F 1264-03. Analysis substantiates the statement that the proposed device performs equivalently to the predicate devices.
Jeremy Blair Project Manager
Image /page/2/Picture/3 description: The image shows the logo for MEDSHAPE SOLUTIONS. The word "MEDSHAPE" is in large, bold, sans-serif font, with each letter capitalized. A horizontal line underlines the word. Below the line, the word "SOLUTIONS" is printed in a smaller, sans-serif font, also with all capital letters.
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Image /page/3/Picture/1 description: The image shows the address for the Food and Drug Administration. The address is 10903 New Hampshire Avenue, Document Mail Center - WO66-G609, Silver Spring, MD 20993-0002. The image is a simple text block with the address information.
MedShape Solutions, Inc. % Mr. Jeremy Blair 1575 Northside Drive, Suite 440 Atlanta. Georgia 30318
FEB 2 9 2012
Re: K113828
Trade/Device Name: DynaNail Ankle Arthrodesis Nail Regulation Number: 21 CFR 888.3020 Regulation Name: Intramedullary fixation rod Regulatory Class: II Product Code: HSB Dated: December 22, 2011 Received: December 28, 2011
Dear Mr. Blair:
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 - Mr. Jeremy Blair
forth in the quality systems (OS) 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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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/MedicalDevices/Safety/ReportaProblem/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/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Sincerely yours,
for
Mark N. Melkerson
Director Division of Surgical, Orthopedic and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
# 510(k) Number: K |13828
## Device Name: DynaNail™ Ankle Arthrodesis Nail
## Indications for Use:
The DynaNail™ Ankle Nail is intended for tibio-talo-calcaneal fusions:
- Post-traumatic and degenerative arthritis. .
- Post-traumatic or primary arthrosis involving both ankle and subtalar joints. .
- Revision after failed ankle arthrodesis with subtalar involvement. �
- Failed total ankle arthroplasty. .
- Non-union ankle arthrodesis. .
- Rheumatoid hindfoot. .
- Absent Talus (requiring tibiocalcaneal arthrodesis). ●
- Avascular necrosis of the talus. �
- Neuroarthropathy or neuropathic ankle deformity. �
- Neuromuscular disease and severe deformity. .
- . Osteoarthritis.
- Charcot Foot. .
- Previously infected arthrosis, second degree .
Prescription Use × (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
.
Page 1 of 1
(Division Sign-Off) Division of Surgical, Orthopedic, and Restorative Devices
K113828 510(k) Number_
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
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.
How do you verify an AI chat answer on the device detail page?
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.