Retrospective user experience data (predicate device)
A retrospective study was performed to evaluate user experience with the predicate device, specifically focusing on the incidence of tooth movement, breakage, and other side effects associated with routine use of the intraoral device.
Retrospective study; User experience; Side effects; Predicate device
Clinical Evidence
Study Design
Population
Comparator
Key Endpoints
Retrospective user experience study; Retrospective study
Users of the predicate SnoreRx device
Not applicable for this study
Incidence of tooth movement, breakage, and other side effects
Indications for Use
The SnoreRx is intended for use on adult patients 18 years of age or older as an aid for the reduction of snoring.
Device Story
SnoreRx is an intraoral mandibular repositioning device; repositions jaw anteriorly to increase pharyngeal space; reduces air turbulence causing snoring. Device consists of two custom-fitted trays; molded to patient teeth via 'boil and bite' method; allows adjustable jaw advancement up to 6 mm. Used in home environment; patient self-operates. Device is reusable; non-sterile. Benefits patient by reducing snoring through mechanical airway management.
Clinical Evidence
No clinical efficacy trials were performed. Evidence includes a retrospective study on user experience with the predicate device (tooth movement, breakage, side effects), a human factors assessment for OTC use, and a usability study confirming that OTC consumers can correctly prepare, fit, and adjust the device per labeling instructions.
Technological Characteristics
Materials: Polycarbonate resin and ethylene vinyl acetate copolymer. Biocompatibility: ISO 10993. Physical testing: ISO 178 (flexural modulus/strength), ISO 527 (stress/strain), ISO 62 (water absorption), ISO 3146 (melting point), ISO 1183 (density/melt flow). Form factor: Two-tray intraoral device. Mechanism: Mechanical mandibular advancement up to 6 mm. Sterilization: Non-sterile.
Indications for Use
Indicated for adult patients 18 years of age or older as an aid for the reduction of snoring.
Regulatory Classification
Identification
Intraoral devices for snoring and intraoral devices for snoring and obstructive sleep apnea are devices that are worn during sleep to reduce the incidence of snoring and to treat obstructive sleep apnea. The devices are designed to increase the patency of the airway and to decrease air turbulence and airway obstruction. The classification includes palatal lifting devices, tongue retaining devices, and mandibular repositioning devices.
Special Controls
*Classification.* Class II (special controls). The special control for these devices is the FDA guidance document entitled “Class II Special Controls Guidance Document: Intraoral Devices for Snoring and/or Obstructive Sleep Apnea; Guidance for Industry and FDA.”
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an image of three stylized human profiles facing to the right, with a stylized eagle above them.
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - W 066-G609 Silver Spring, MD 20993-0002
August 28, 2017
Apnea Sciences Corporation James Smith, Ph.D. 24982 Barclay Lane Laguna Niguel, California 92677
Re: K170285 Trade/Device Name: SnoreRx Regulation Number: 21 CFR 872.5570 Regulation Name: Intraoral devices for snoring and intraoral devices for snoring and obstructive sleep apnea Regulatory Class: Class II Product Code: LRK Dated: July 17, 2017 Received: July 18, 2017
Dear Dr. Smith:
This letter corrects our substantially equivalent letter of August 18, 2017.
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 Actinclude 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
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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.
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/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/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,
# Michael J. Ryan -S
for Lori A. Wiggins, MPT, CLT Acting Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control, and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### Indications for Use
510(k) Number (if known)
Device Name SnoreRx
Indications for Use (Describe)
The SnoreRx is intended for use on adult patients 18 years of age or older as an aid for the reduction of snoring.
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)
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Image /page/3/Picture/0 description: The image shows the logo for Apnea Sciences. The logo consists of the words "APNEA" and "SCIENCES" in a gold sans-serif font, separated by a crescent moon shape. Below the logo is the tagline "Advancing the Science of Sleep Medicine" in a smaller, italicized font.
### 510(k) SUMMARY
### Submitted by:
| Owner's Name: | Apnea Sciences Corporation |
|---------------|-----------------------------------------------------------|
| Address: | 27121 Aliso Creek Road, Ste. 140<br>Aliso Viejo, CA 92656 |
| Contact: | James Fallon, President/CEO |
| Telephone: | (949) 680-2770 |
| Fax: | (928) 569-5974 |
| E-mail: | jfallon@apneasciences.com |
### Contact Person:
| Name | James Smith, Ph.D. |
|----------------|-----------------------------------------------|
| Address | 24982 Barclay Lane<br>Laguna Niguel, CA 92677 |
| Telephone | 949-340-7261 |
| Fax: | 949-340-7141 |
| E-mail: | jrsmith00@cox.net |
| Date Prepared: | March 16, 2017 |
## Trade Name :
SnoreRx
Common Name : Classification Name : Device Class: Product Code: Regulation No.
Mandibular repositioning device Anti-Snoring Device Class II LRK 21 CFR 872.5570
Predicate Device: SnoreRx (Apnea Sciences Corporation) Predicate 510(k) #: K153200
De vice Description: The SnoreRx is an intraoral device that repositions the jaw anteriorly in order to increase the patient's pharyngeal space, which improves the ability to exchange air and decreases air turbulence, a causative factor in snoring. The device consists of two custom fabricated trays that fit separately over the upper and lower dental arches and engage each other in the anterior area of the mouth.
Intended Use : The SnoreRx is intended for use on adult patients 18 years of age or older as an aid for the reduction of snoring.
Technology Comparison: The devices are identical in design and functionality. Both the SnoreRx and its predicate consist of intraoral mouth
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Image /page/4/Picture/0 description: The image is a logo for Apnea Sciences. The logo consists of a gold rectangle with the word "APNEA" on the left and "SCIENCES" on the right, separated by a crescent moon shape. Below the rectangle is the tagline "Advancing the Science of Sleep Medicine" in a smaller font.
pieces that are molded to the patient's teeth using a standard 'boil and bite' method, and allows slight adjustment of the anterior positioning of the jaw to the patient's comfort. The SnoreRx is provided non-sterile and uses the same packaging system as the predicate device. The table below compares the technological aspects of the new and predicate devices.
| Subject Area | New Device | Predicate | Differences |
|------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------|
| Product Code | LRK | LRK | |
| Product Classification | Class II | Class II | |
| Classification Name | Anti-Snoring Device | Anti-Snoring Device | |
| Proprietary Name | SnoreRx | SnoreRx | |
| Technological Features | Mandibular<br>repositioning device<br>that advances the<br>lower jaw to increase<br>pharyngeal space. | Mandibular<br>repositioning device<br>that advances the<br>lower jaw to increase<br>pharyngeal space. | |
| Intended Use | Minimize air<br>turbulence that causes<br>snoring. Device is<br>intended for Over-<br>The-Counter use. | Minimize air<br>turbulence that causes<br>snoring. Device is<br>intended for<br>prescription use. | Product labeling has been<br>developed to ensure<br>appropriate Instructions<br>for Use are provided to<br>OTC consumers. |
| Materials | Polycarbonate resin<br>Ethylene vinyl acetate<br>copolymer | Polycarbonate resin<br>Ethylene vinyl acetate<br>copolymer | |
| Desirable Characteristics | Home use, heat<br>sensitive / moldable,<br>adjustable jaw<br>advancement position | Home use, heat<br>sensitive / moldable,<br>adjustable jaw<br>advancement position | |
| Specifications:<br>- Physical:<br>- Mechanical:<br>- Single use: | Custom-fitted<br>intraoral device<br>Repositions mandible<br>anteriorly up to 6 mm<br>Reusable | Custom-fitted<br>intraoral device<br>Repositions mandible<br>anteriorly up to 6 mm<br>Reusable | |
| Sterility | Non-sterile | Non-sterile | |
| Biocompatibility | ISO 10993 | ISO 10993 | |
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Image /page/5/Picture/0 description: The image shows the logo for Apnea Sciences. The logo consists of the words "APNEA" and "SCIENCES" in white font on a gold bar, separated by a white crescent moon. Below the gold bar is the text "Advancing the Science of Sleep Medicine" in a smaller, gold font.
| Nonclinical Testing: | The SnoreRx materials were tested for cytotoxicity, irritation, and sensitization and were determined to be biocompatible in accordance with ISO 10993. Biocompatibility test reports have been submitted as part of this filing. |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | Device materials were tested for various physical properties. The tray material was tested for flexural modulus and strength (ISO 178), stress and strain at break (ISO 527), and water absorption (ISO 62). The liner material was tested for melting point (ISO 3146), and density and melt flow rate (ISO 1183). All materials met device specifications. |
| Clinical Testing: | A retrospective study was conducted to gain insight on the user's experience with the predicate device, including incidence of tooth movement, breakage, and other side effects typically experienced by users of intraoral devices. |
| | A human factors assessment was also performed for the use of SnoreRx in the OTC environment. |
| | Additionally, a usability study was performed to assess the OTC consumer's understanding of the device labeling and instructions for use, and to demonstrate that the OTC consumer can appropriately prepare, fit, and adjust the SnoreRx without assistance from a dental professional. |
| | Conclusion of Comparison: SnoreRx and its predicate are technologically identical and there are no differences in design and materials. The SnoreRx is fitted by the 'boil-and-bite' method that is equivalent to that used for multiple OTC devices. The OTC indication for use does not raise substantial new questions of safety or effectiveness. Therefore, the new device (SnoreRx) is determined to be substantially equivalent to the predicate device. |
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.