The Interacoustics EP systems, EP15 and EP25, are intended to assist in the evaluation, documentation and diagnosis of ear disorders on human beings. EP1 5/25 is a 2 channel ABR and the automatic recording of ABR waveforms makes it well suited for waveform based screening and the manual programmability options allow for comprehensive clinical use ranging from frequency specific threshold test to operating room applications and cochlear implant tests. The EP15 is a basic unit allowing only recording of the Auditory Brainstem Response (ABR), while the EP25 allows recording of the ABR and earlier and later potentials. The Interacoustics TEOAE25 system is intended for determining Cochlear function using Transient Evoked Otoaccoustic Emission click stimuli. Both of these systems are of particular interest to Ear, Nose, and Throat doctors, Neurology specialties, Audiologist and other health professionals concerned with measuring auditory functions.
Device Story
System measures auditory brainstem responses (ABR) and other evoked potentials via surface electrodes; inputs amplified by external preamplifier; digitized by ADC within Eclipse unit; processed by PC software. Features include automatic waveform recording for screening and manual programmability for clinical threshold testing, OR applications, and cochlear implant testing. Operators (ENTs, neurologists, audiologists) view processed waveforms on monitor for diagnosis; data stored on PC. Enhancements include Bayesian weighting, low-pass filtering, and new stimulus types (Chirp, NB Chirp, wave file clicks). Benefits include improved signal quality and expanded diagnostic capabilities for hearing disorders.
Clinical Evidence
Bench testing only. Validation performed on EABR protocol, new stimuli (chirp, NB chirp, wave file clicks), Bayesian weighting, and low-pass filtering. Results confirmed generated electrical output was consistent with mathematically predicted output. OS compatibility testing performed for Windows Vista.
Technological Characteristics
PC-based system; USB connectivity; external preamplifier with surface electrodes; 16-bit A/D resolution. Stimuli: Click, Tone burst, Chirp, NB Chirp. Signal processing: Bayesian weighting, low-pass filtering. Software runs on Windows OS. Improved CMRR and lower noise compared to predicate.
Indications for Use
Indicated for human patients, newborn to geriatric, requiring evaluation, documentation, and diagnosis of ear disorders and auditory function. Used by ENT, neurology, and audiology professionals for ABR, MLR, LLR, P300, MMN, EcochG, and EABR testing.
Regulatory Classification
Identification
An audiometer or automated audiometer is an electroacoustic device that produces controlled levels of test tones and signals intended for use in conducting diagnostic hearing evaluations and assisting in the diagnosis of possible otologic disorders.
Predicate Devices
Eclipse (Cabinet name), TEOAE25, EP15, EP25 or the combination of the systems (K052562)
Submission Summary (Full Text)
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990406
Image /page/0/Picture/1 description: The image shows the Interacoustics logo. The logo consists of the word "Interacoustics" in a bold, sans-serif font, enclosed within an oval shape that resembles a globe. The globe is represented by curved lines that mimic the lines of longitude and latitude. The registered trademark symbol is located to the right of the word "Interacoustics".
# Eclipse EP15/EP25 510(k) Summary
JUL 222009
#### Sponsor
Interacoustics A/S Drejervaenget 8 DK-5610 Assens Denmark
Phone: +45 63713555 Fax:
· Contact person: Mrs. Hanne Nielsen Preparation date: 03 Feb. 09.
#### Device
Trade names: EP15 software module, EP25 software module. Common name: Audiometer Classification name: EWO, GWJ
#### Predicate device
Eclipse (Cabinet name), TEOAE25, EP15, EP25 or the combination of the systems. K052562
#### Device description
The EP15 and EP25 systems measure auditory brainstem responses picked up by skin electrodes and amplified by a pre amplifier. The data acquisition of the ABR recordings takes place from the surface electrodes mounted at specific recording points on the patient. The analogue ABR recordings are amplified in the external preamplifier connected to the electrodes. The amplified analogue ABR recordings are converted into a digital signal in the ADC (Analog to Digital Converter) inside the Eclipse. The digital ABR recordings undergo data processing handled by the PC to improve the ABR-recordings. The ABR-recordings are displayed on the monitor for the operator, for further examination and diagnosis. All ABR recordings are stored on the Laptop / Desktop computer hard drive for later examination and diagnosis.
#### Intended use
The Interacoustics EP systems, EP15 and EP25, are intended to assist in the evaluation, documentation and diagnosis of ear disorders on human beings. EP1 5/25 is a 2 channel ABR and the automatic recording of ABR waveforms makes it well suited for waveform based screening and the manual programmability options allow for comprehensive clinical use ranging from frequency specific threshold test to operating room applications and cochlear implant tests.
The EP15 is a basic unit allowing only recording of the Auditory Brainstem Response
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(ABR), while the EP25 allows recording of the ABR and earlier and later potentials.
The Interacoustics TEOAE25 system is intended for determining Cochlear function using Transient Evoked Otoaccoustic Emission click stimuli.
Both of these systems are of particular interest to Ear, Nose, and Throat doctors, Neurology specialties, Audiologist and other health professionals concerned with measuring auditory functions.
#### Summary
The technological characteristics of the predicate device and modified EP15/EP25 system are listed in the table below.
| | Predicate device | Modified device |
|-------------------|------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------|
| Name | Interacoustics Eclipse | Interacoustics Eclipse |
| Model | EP15/EP25 | EP15/EP25 |
| K-number | K052562 | Same as existing EP15/EP25 |
| Clinical purpose | Measuring evoked potentials to assist in<br>evaluation, documentation and diagnosis<br>of hearing disorders in human beings. | Same as existing EP15/EP25 |
| Patient group | New born to geriatric | Same as existing EP15/EP25 |
| Test types | ABR, MLR, LLR, P300, MMN, EcochG | Same as existing EP15/EP25 plus EABR |
| Stimulus | Click, Tone burst | Same as existing EP15/EP25 plus Chirp,<br>NB Chirp and click from wave file |
| Averaging | Standard averaging | Same as existing EP15/EP25 plus<br>Bayesian weighting and low pass filtering |
| Presentation | EEG, Normative latency, Latency, Latency<br>calculation. | Same as existing EP15/EP25 plus Residual<br>noise, FMP values, EcochG area |
| Result evaluation | Manually / subjective | Same as existing EP15/EP25 |
| Hardware system | Eclipse connected to Laptop through<br>USB, Insert earphones, external<br>preamplifier with surface electrodes | Same as existing EP15/EP25 |
| Transducers | Eartone ABR insert phone<br>TDH39 (Optional)<br>871 (Optional) | Same as existing EP15/EP25 |
| Electrodes | Surface electrodes on:<br>- Low forehead<br>- High forehead<br>- Both mastoids | Same as existing EP15/EP25 |
| Preamplifier | Channels: 1 or 2<br>A/D resolution: 16 bit | Same as existing EP15/EP25 but with<br>improved CMRR and lower noise. |
| Operating system | Windows 98<br>Windows XP<br>Windows 2000 | Same as existing EP15/EP25 plus<br>Windows Vista |
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| Predicate device | Modified device |
|---------------------------------------------------------|-----------------------------------------------------------------|
| Operators manual | Same as existing EP15/EP25 plus description of the new features |
| Covers the Eclipse EP15/EP25, TEOAE25, DPOAE20 and ASSR | |
#### Tests
The usefulness of the EABR protocol setup has been validated with a positive result. The correct implementation of the new stimuli, i.e. chirp, NB chirp and click from wave file, have been verified through bench testing which provided the expected results. The generated electrical output was consistent with the mathematically predicted output. The correct implementation of the Bayesian weighting and low pass filtering has also been verified through bench testing and the results were as predicted.
The EP15/EP25's ability to run under windows Vista® has also been tested and no abnormal behavior was detected.
#### Conclusion
Based on the design control, the tests performed and the validation of the modified device we conclude that the modified device is both as safe and effective and performs as good as or better than the predicate device.
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/3/Picture/1 description: The image shows the logo for the 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 an eagle with its wings spread.
#### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JUL 222009
Interacoustics A/S C/O Hanne Nielsen Drejervaenget 8 DK-5610 Assens Denmark
Re: k090406
Trade/Device Name: Eclipse EP15/EP25 ABR System Regulation Number: 21 CFR 874.1050 Regulation Name: Audiometer Regulatory Class: Class II Product Code: EWO, GWJ Dated: May 29, 2009 Received: June 9, 2009
Dear Ms. Nielsen:
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. ·
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 - Ms. Hanne Nielsen
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/cdrh/mdr/ 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 (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
Malvina B. Eydelman, M.D.
Director Division of Ophthalmic, Neurological, and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Image /page/5/Picture/1 description: The image shows the logo for Interacoustics. The logo features the word "Interacoustics" in bold, sans-serif font. The word is placed inside of a globe. The globe is made up of curved lines.
## Indications for Use
510(k) Number (if known): K090406
Device Name: TEOAE25, EP15 or EP25, or the combination of systems
Indications For Use:
The Interacoustics EP systems, EP15 and EP25, are intended to assist in the evaluation, documentation and diagnosis of ear disorders on human beings. EP15/25 is a 2 channel ABR and the automatic recording of ABR waveforms makes it well suited for waveform based screening and the manual programmability options allow for comprehensive clinical use ranging from frequency specific threshold test to operating room applications and cochlear implant tests. The EP15 is a basic unit allowing only recording of the Auditory Brainstem Response (ABR), while the EP25 allows recording of the ABR and earlier and later potentials.
The Interacoustics TEOAE25 system is intended for determining Cochlear function using Transient Evoked Otoaccoustic Emission click stimuli.
Both of these systems are of particular interest to Ear, Nose, and Throat doctors, Neurology specialties, Audiologist and other health professionals concerned with measuring auditory functions.
X Prescription Use 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
### Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use
1 CFR 81 CFR 801 escription User 109)
Per 21 CFR 801.109)
Per 21 CFR 801.109
Shu Chen Peng
(Division Sign-Off)
Division of Ophthalmic, Neurological and Ear,
Division of Ophthalmic, Neurological and Ear,
Devices Division of Throat Devices
Page 1 of
510(k) Number K090406
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.