K110486 · Novasom, Inc. · MNR · Aug 12, 2011 · Anesthesiology
Device Facts
Record ID
K110486
Device Name
ACCUSOM
Applicant
Novasom, Inc.
Product Code
MNR · Anesthesiology
Decision Date
Aug 12, 2011
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 868.2375
Device Class
Class 2
Indications for Use
The ACCUSOM device is indicated for use in the diagnostic evaluation of adults with possible sleep apnea. The ACCUSOM can score obstructive apneas, which includes mixed apneas. The ACCUSOM device is intended for use in the home and clinic setting.
Device Story
ACCUSOM is a battery/line-powered ventilatory effort recorder for home sleep testing. Device worn on patient's arm; connects to nasal, respiratory effort, and SpO2 sensors. Inputs: SpO2, pulse rate, respiratory effort, and airflow waveform. Device stores sleep-disordered breathing data (apnea/hypopnea duration, oxygen levels, pulse, respiratory effort, sound intensity) for up to three 8.5-hour studies. Data uploaded via cellular network or RS232 cable to NovaSom for report preparation. Physician reviews summary report and event log to aid in sleep apnea diagnosis. Benefits include convenient home-based diagnostic evaluation.
Clinical Evidence
No new clinical testing performed. Substantial equivalence supported by bench performance testing and reliance on clinical studies previously submitted for the predicate Silent Night V (K000253).
Technological Characteristics
Ventilatory effort recorder; battery/line-powered. Sensors: nasal, respiratory effort, SpO2. Connectivity: cellular network, RS232. Software: C++ programming language. Hardware: integrated single-unit design. Data storage: up to three 8.5-hour sleep studies.
Indications for Use
Indicated for diagnostic evaluation of adults with possible sleep apnea. Capable of scoring obstructive and mixed apneas. Intended for home and clinic use.
Regulatory Classification
Identification
A breathing (ventilatory) frequency monitor is a device intended to measure or monitor a patient's respiratory rate. The device may provide an audible or visible alarm when the respiratory rate, averaged over time, is outside operator settable alarm limits. This device does not include the apnea monitor classified in § 868.2377.
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Image /page/0/Picture/0 description: The image shows the logo for NovaSom, a company specializing in innovative sleep solutions. The logo features a stylized graphic above the company name, resembling a spiral or a stylized brain wave pattern. Below the name "NovaSom," the tagline "Innovative Sleep Solutions" is printed in a smaller, sans-serif font.
K110486
AUG 1 2 2011
## SECTION 5: 510(k) SUMMARY
# 510(k) Summary
| Date Prepared: | August 3, 2011 |
|--------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitter:<br>Contact: | NovaSom, Inc.<br>801 Cromwell Park Drive, Suite 108<br>Glen Burnie, MD 21061<br>Phone: 1 (410) 590-0443<br>Facsimile: 1 (410) 590-4403<br>Roger K. Richardson, V.P., Operations<br>1 (410) 590-0443 |
| Trade/Proprietary<br>Name of Device: | ACCUSOM |
| Common Name<br>of Device: | Ventilatory Effort Recorder |
- Class II per 21 CFR 868.2375. Ventilatory Effort Recorder, Classification: Product Code MNR
Legally Marketed
| Predicate Device: | Silent Night V (K000253), manufactured by NovaSom, Inc. (formerly Sleep Solutions, Inc.) |
|-------------------|------------------------------------------------------------------------------------------|
|-------------------|------------------------------------------------------------------------------------------|
#### Description of New ACCUSOM Device:
The ACCUSOM device is a battery and line powered ventilatory effort recorder. The ACCUSOM device is indicated for use in the diagnostic evaluation of adults with possible sleep apnea. The ACCUSOM can score obstructive apneas, which includes mixed apneas. The ACCUSOM device is intended for use in the home and clinic setting.
As with the predicate Silent Night V device, the ACCUSOM is supplied to patients only upon physician order for use in Home Sleep Testing. The ACCUSOM device is positioned on the patient's arm. The sensors are positioned on the patient's body and connect into the ACCUSOM device. The ACCUSOM contains identical functions and the same algorithm as the predicate Silent Night V device (K000253). The indications for use of the ACCUSOM are identical to the Silent Night V (K000253).
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Image /page/1/Picture/0 description: The image shows the logo for NovaSom, a company specializing in innovative sleep solutions. The logo features a stylized, swirling symbol above the company name. Below the name, the tagline "Innovative Sleep Solutions" is displayed in a smaller font.
NovaSom, Inc. (formerly Sleep Solutions, Inc.) owns the 510(k) for the predicate Silent Night V (K000253). The Silent Night V device was cleared in 2000 and has been in use since that time with no adverse or reportable events and no issues related to reliability. The ACCUSOM device is the next generation to the Silent Night V (K000253).
NovaSom, Inc. was formerly known as Sleep Solutions, Inc. The name change to NovaSom, Inc. took place on September 10, 2010. NovaSom, Inc. was last inspected by the FDA in December, 2009 while still under its previous name of Sleep Solutions. Inc.
The ACCUSOM device provides physiological measurements that are identical to the predicate Silent Night V device including:
- Arterial oxygen saturation level (SpO2)) (Sampled every 5 (+/- 0.2 . seconds))
- Pulse Rate (Sampled every 5 (+/- 0.2 seconds)) .
- Respiration effort signal (Sampled every 100 (+/- 0.5 mseconds)) .
- Airflow waveform corrected for ambient room noise (Sampled at 5.2083 kHz, . accurate to 100ppm over the operating temperature range)
As consistent with the predicate Silent Night V device, throughout a typical sleep study, sleep disordered breathing information and statistics are stored into the ACCUSOM memory. The stored information includes time and duration of apneas and hypopneas, blood oxygen saturation levels, pulse rate, respiratory effort level, sound intensity level, epoch numbers, and paused time intervals. The new ACCUSOM device can retain three 8.5-hour sleep studies. Existing software retrieves, scores, displays and prints the collected data on a personal computer platform. A summary report and event log can be provided to the physician to view the sleep data.
The ACCUSOM is a battery-powered device with cables that attach to a nasal sensor, to a respiratory effort sensor, and to a blood oxygen saturation sensor (SpO2). The ACCUSOM contains visual and audible sensor status indicators for the patient's convenience. At the end of each night of testing, the sensors are removed and the ACCUSOM is plugged into a wall outlet to recharge and to upload the previous night's data using the cellular network to NovaSom, Inc. for report preparation. If the cellular network is insufficient in the patient's residence, the ACCUSOM data will be downloaded using the traditional RS232 cable connection upon receipt at NovaSom, Inc.
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Image /page/2/Picture/0 description: The image shows the logo for NovaSom, a company specializing in innovative sleep solutions. The logo features a stylized graphic above the company name, resembling a swirling or orbiting shape. Below the name, the tagline "Innovative Sleep Solutions" is printed in a smaller, sans-serif font.
#### Indications for Use of the New Device:
The ACCUSOM device is indicated for use in the diagnostic evaluation of adults with possible sleep apnea. The ACCUSOM can score obstructive apneas, which includes mixed apneas.
The ACCUSOM device is intended for use in the home and clinic setting.
## Comparison of the Technological Features of the New (Modified) Device and Predicate Device:
The ACCUSOM device and the lawfully marketed predicate Silent Night V device contain similar materials of construction. Features of the ACCUSOM are comparable to those of the predicate Silent Night V device. The main differences include:
- 1. Change in power from AC Power: 120 VAC, 50/60 Hz to AC/DC
- 2. Change in software programming language: From Assembly to C++
- 3. Change in hardware: Combination of Bedside Unit and Patient Module into a single unit
- 4. Additional mode of completed test download: Addition of wireless capability
#### Testing:
Bench performance testing has been conducted to demonstrate that the new ACCUSOM device is substantially equivalent to the predicate Silent Night V device.
NovaSom, Inc. will test to ensure compliance to the requirements of various published standards applicable to this device prior to its introduction to the market.
Because the new ACCUSOM device utilizes the same algorithm as the predicate Silent Night V device, no additional clinical testing has been performed. The clinical studies performed in support of the Silent Night V can be found in the Silent Night V 510(k) submission (K000253) on pages 251 - 275.
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Image /page/3/Picture/0 description: The image shows the logo for NovaSom, a company specializing in innovative sleep solutions. The logo features a stylized, swirling design above the company name. Below the name, the tagline "Innovative Sleep Solutions" is displayed in a smaller font, emphasizing the company's focus on providing advanced solutions for sleep-related issues.
# Conclusion:
The conclusions drawn from the specifications and performance testing of the ACCUSOM device demonstrate that the new ACCUSOM device is at least as safe and as effective and performs as well as or better than the NovaSom, Inc. predicate Silent Night V device, (K000253). For these reasons, we believe the ACCUSOM device is substantially equivalent to the predicate device.
Signed,
Roger K. Richardson, RRT-NP, RPFT Vice President, Operations & Chief Compliance Officer
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Image /page/4/Picture/1 description: The image shows the seal of the Department of Health & Human Services (HHS) of the United States. The seal features a stylized eagle with three lines extending from its head, representing the three branches of government. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" are arranged in a circular pattern around the eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Mr. Roger K. Richardson Vice President, Operations NovaSom, Incorporated 801 Cromwell Park Drive. Suite 108 Glen Burnie. Maryland 21061
AUG 12 2011
Re: K110486
Trade/Device Name: ACCUSOM Ventilatory Effort Recorder Regulation Number: 21 CFR 868.2375 Regulation Name: Breathing frequency monitor Regulatory Class: II Product Code: MNR Dated: August 3, 2011 Received: August 10. 2011
Dear Mr. Richardson:
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.
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Page 2- Mr. Richardson
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 lisuing (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.
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 ucm 1 1 5809.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,
h for
Anthony D. Watson, B.S., M.S., M.B.A. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
cc: DMC - 2 copies ODE DAGID/ARDB - Sugato De 08/11/11 EFW
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Image /page/6/Picture/0 description: The image shows the logo for NovaSom, a company that provides innovative sleep solutions. The logo features a stylized graphic above the company name, which is written in a bold, sans-serif font. Below the company name is the tagline "Innovative Sleep Solutions" in a smaller font. The logo is simple and modern, and it conveys the company's focus on sleep and innovation.
# SECTION 4: INDICATIONS FOR USE
510(k) Number (if known): Kl l 0486
Device Name: ACCUSOM
Indications for Use:
The ACCUSOM device is indicated for use in the diagnostic evaluation of adults with possible sleep apnea. The ACCUSOM can score obstructive apneas, which includes mixed apneas.
The ACCUSOM device is intended for use in the home and clinic setting.
Prescription Use × (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 IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Nayakul for L Schulthers
(Division Sign-Off) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
Page 1 of 1
K110486 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.