K162946 · Quality Electrodynamics, LLC · MOS · Jan 6, 2017 · Radiology
Device Facts
Record ID
K162946
Device Name
8ch Knee-Foot SPEEDER
Applicant
Quality Electrodynamics, LLC
Product Code
MOS · Radiology
Decision Date
Jan 6, 2017
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1000
Device Class
Class 2
Indications for Use
The 8ch Knee-Foot SPEEDER Coil is intended for use with Toshiba 1.5T MR systems to produce diagnostic images of the knee, wrist, hand, foot and ankle that can be interpreted by a trained physician.
Device Story
The 8ch Knee-Foot SPEEDER is a receive-only, 8-channel phased array RF coil for MRI. It captures magnetic resonance signals from the knee, wrist, hand, foot, and ankle. The device features a split-top mechanical design with interchangeable anterior pieces to accommodate different anatomies. It is used in clinical settings with Toshiba 1.5T MR systems. The coil is operated by MRI technicians or radiologists. The resulting images are displayed on the MR system console for interpretation by a physician to aid in clinical diagnosis. The device benefits patients by providing high-quality diagnostic images of the specified musculoskeletal regions.
Clinical Evidence
Clinical evidence consists of volunteer scanning of the knee, wrist, hand, foot, and ankle. Images were evaluated to demonstrate the device produces diagnostic quality images of the intended anatomies. No comparative statistical metrics (e.g., sensitivity/specificity) were required or reported.
Technological Characteristics
8-channel, receive-only, phased array RF coil. Rigid, flame/impact-resistant plastic housing. Biocompatible materials. Split-top mechanical design with interchangeable anterior pieces. Compatible with Toshiba 1.5T MR systems. Tested per AAMI/ANSI ES60601-1 and IEC 60601-2-33. Surface heating limit < 41°C. Bench testing per NEMA MS 6 and NEMA MS 9.
Indications for Use
Indicated for patients requiring diagnostic MRI imaging of the knee, wrist, hand, foot, and ankle using Toshiba 1.5T MR systems.
Regulatory Classification
Identification
A magnetic resonance diagnostic device is intended for general diagnostic use to present images which reflect the spatial distribution and/or magnetic resonance spectra which reflect frequency and distribution of nuclei exhibiting nuclear magnetic resonance. Other physical parameters derived from the images and/or spectra may also be produced. The device includes hydrogen-1 (proton) imaging, sodium-23 imaging, hydrogen-1 spectroscopy, phosphorus-31 spectroscopy, and chemical shift imaging (preserving simultaneous frequency and spatial information).
Special Controls
*Classification.* Class II (special controls). A magnetic resonance imaging disposable kit intended for use with a magnetic resonance diagnostic device only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized image of three human profiles facing to the right, with flowing lines suggesting movement or connection.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
January 6, 2017
Quality Electrodynamics, LLC (QED) % Ms. Kathleen Aras Director, Regulatory & Quality Affairs 6655 Beta Drive, Suite 100 MAYFIELD VILLAGE OH 44143
Re: K162946
Trade/Device Name: 8ch Knee-Foot SPEEDER Regulation Number: 21 CFR 892.1000 Regulation Name: Magnetic resonance diagnostic device Regulatory Class: II Product Code: MOS Dated: October 19, 2016 Received: October 21, 2016
Dear Ms. Aras:
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 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.
{1}------------------------------------------------
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education 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. 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/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 Industry and Consumer Education 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.
Michael D'Hara
For
Robert Ochs, Ph.D. Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
## Indications for Use
510(k) Number (if known) K162946
Device Name 8ch Knee-Foot SPEEDER
Indications for Use (Describe)
The 8ch Knee-Foot SPEEDER Coil is intended for use with Toshiba 1.5T MR systems to produce diagnostic images of the knee, wrist, hand, foot and ankle that can be interpreted by a trained physician.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
_ Over-The-Counter Use (21 CFR 801 Subpart C)
### PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON A SEPARATE PAGE IF NEEDED.
### FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
This section applies only to requirements of the Paperwork Reduction Act of 1995.
### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
# 510(k) Summary
#### 1. Applicant
Quality Electrodynamics, LLC. (QED) 6655 Beta Drive, Suite 100 Mayfield Village, OH 44143
#### 2. Contact
Kathleen Aras Director, Regulatory and Quality Affairs (440) 484-2964 kathleen.aras@qualedyn.com
#### 3. Date Prepared
19 October 2016
#### 4. Tradenames
8ch Knee-Foot SPEEDER
#### 5. Common name
coil, magnetic resonance, specialty
#### Model Numbers 6.
QED Model Number: Q7000172
Toshiba Model Number: MJAJ-257A
This device is manufactured and sold by QED to Toshiba. Toshiba sells the device to end users under their own model number.
#### 7. Classification
Magnetic resonance diagnostic device (21 CFR 892.1000, Product Code MOS, Class II)
#### 8. Predicate Device
8ch Knee SPEEDER, Quality Electrodynamics, K152695
#### 9. Device Description
The 8ch Knee-Foot SPEEDER coil is a receive-only, 8-channel phased array coil designed for magnetic resonance imaging (MRI) using the
{4}------------------------------------------------
Toshiba 1.5T MR systems. The 8ch Knee-Foot SPEEDER coil is intended to be used for imaging the knee, wrist, hand, foot and ankle.
The 8ch Knee-Foot SPEEDER coil is a reusable, non-invasive device with limited exposure with regard to duration of contact with the body. All coil elements are enclosed in a rigid plastic housing which is flame and impact resistant, and has been tested for biocompatibility.
The 8ch Knee-Foot SPEEDER coil also includes the comfort pads listed in Table 10-1, which are provided with the coil shipment.
| QED Part Number | Description | Qty |
|-----------------|---------------------------------------------------------|-----|
| 3003890 | Anterior Knee Pad (1/4" Thick Pad) | 1 |
| 3003864 | Posterior Knee Support Pad (Bottom<br>Thermoformed Pad) | 1 |
| 3003866 | Free Leg Pad (Non-Imaged Knee Pad) | 1 |
| 3003865 | Inferior Leg Pad (Foot/Ankle Pad) | 1 |
| 3004802 | Ankle / Heel support pad for foot imaging | 1 |
| 3004823 | Wedge pad for foot imaging | 1 |
Table 10-1: 8ch Knee-Foot SPEEDER Coil Comfort Pads
#### 10. Indications for Use
The 8ch Knee-Foot SPEEDER Coil is intended for use with Toshiba 1.5T MR systems to produce diagnostic images of the knee, wrist, hand, foot and ankle that can be interpreted by a trained physician.
The Indications for Use statement for the 8ch Knee-Foot SPEEDER coil is not identical to that of the predicate device; however, the differences do not alter the intended diagnostic use of the device nor do they affect the safety and effectiveness of the device relative to the predicate. The proposed 8ch Knee-Foot SPEEDER coil is a modification to the predicate 8ch Knee SPEEDER coil that expands the intended use from knee, wrist, hand and forefoot to knee, wrist, hand, foot and ankle; thereby encompassing the whole foot and ankle. This is accomplished by adding a second anterior piece used for foot and ankle imaging. The posterior and knee anterior piece remain identical to the predicate 8ch Knee SPEEDER coil cleared under K152695.
### 11. Summary of Technological Characteristics Compared to the Predicate Device
At a high level, the subject and predicate devices are based on the following same technological elements:
{5}------------------------------------------------
- Intended to provide images of the knee, wrist and hand regions ●
- 8-channel, receive-only, phased array RF coils
- . Split-top mechanical design
- . Housing materials are flame, impact resistant and biocompatible
- Knee, wrist, and hand imaging accomplished through 8ch Knee ● SPEEDER configuration
- Compatible with Toshiba 1.5T MR systems ●
The following technological differences exist between the subject and predicate device:
- Intended to provide images of the foot and ankle regions (subject) . versus forefoot region (predicate) in addition to knee, wrist and hand
- Two anterior pieces with split-top mechanical design shaped to fit . the knee and foot (subject) versus single split-top mechanical design shaped to fit the knee (predicate)
#### 12. Performance Data
The following performance data were provided in support of the substantial equivalence determination.
## Biocompatibility Testing
All surface materials on the 8ch Knee-Foot SPEEDER coil that are intended to come into direct or indirect contact with patient biological tissues, cells or body fluids have a history of safe use in previouslycleared devices.
## Electrical Safety and Electromagnetic Compatibility
The electrical safety and electromagnetic compatibility of the 8ch Knee-Foot SPEEDER coil was verified in accordance with AAMI/ANSI ES60601-1 and IEC 60601-2-33.
Surface heating was tested in accordance with AAMI/ANSI ES60601-1. The measured temperature of the surface of the coil never exceeded the maximum limit of 41°C.
## Performance Testing - Bench
{6}------------------------------------------------
The SNR and uniformity of the 8ch Knee-Foot SPEEDER was analyzed per NEMA MS 6 and NEMA MS 9 and was found to conform to predetermined acceptance criteria.
## Performance Testing - Clinical
In accordance with the FDA Guidance for Industry: Guidance for the Submission of Premarket Notifications for Magnetic Resonance Diagnostic Devices, clinical images from volunteer scanning of the knee, wrist, hand, foot and ankle were obtained from the 8ch Knee-Foot SPEEDER. These images were used to demonstrate that the 8ch Knee-Foot SPEEDER produces diagnostic quality images of the intended anatomies.
#### 13. Conclusion
The electrical safety and electromagnetic compatibilitv and biocompatibility data support the safety of the 8ch Knee-Foot SPEEDER and the bench testing per the NEMA standards demonstrates the performance and effectiveness of the device under the specified use conditions. This testing demonstrates that the 8ch Knee-Foot SPEEDER performs as well as or better than the predicate device.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
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.