K132988 · Lung Assist, Inc. · NHJ · Mar 28, 2014 · Anesthesiology
Device Facts
Record ID
K132988
Device Name
VITAL COUGH
Applicant
Lung Assist, Inc.
Product Code
NHJ · Anesthesiology
Decision Date
Mar 28, 2014
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 868.5905
Device Class
Class 2
Attributes
Therapeutic, Pediatric
Indications for Use
The Vital Cough is intended for use on patients unable to cough or clear secretions effectively due to reduced peak cough expiratory flow resulting from high spinal cord injuries, neuromuscular deficits or severe fatigue associated with intrinsic lung disease. It may be used either with a facemask, mouthpiece, or an adapter to a patient's endotracheal tube or tracheostomy tube. For use in a hospital, institutional setting, or home use given adequate training. For use on adult or pediatric patients.
Device Story
Vital Cough is an electromechanical, microprocessor-controlled cough assist device; used in hospitals, institutions, or homes by clinicians or trained patients. Device utilizes an adjustable blower to generate positive inspiratory pressure and negative expiratory pressure to stimulate cough; includes an oscillator butterfly valve to provide flutter therapy (0-20 Hz) during exhalation to loosen secretions. User interacts via touch screen to set inhalation/exhalation times and pressures. Device output assists in secretion clearance for patients with compromised respiratory function. Benefits include improved airway clearance through mechanical pressure shifts and vibration therapy.
Clinical Evidence
Bench testing only. Compliance with IEC 60601-1 (electrical safety) and IEC 60601-1-2 (EMC). Output air tested for toxicity (none found). Performance characterization included pressure and flow waveform analysis comparing the subject device to the Acapella predicate.
Technological Characteristics
Electromechanical device; metal and polymer housing; touch screen interface. Operates via adjustable blower for positive/negative pressure generation; oscillator butterfly valve for flutter therapy. Universal power (120-240V, 50/60 Hz). Software-controlled. Complies with ISO 9703 for alarm signals.
Indications for Use
Indicated for adult and pediatric patients unable to cough or clear secretions effectively due to reduced peak cough expiratory flow caused by high spinal cord injuries, neuromuscular deficits, or severe fatigue from intrinsic lung disease.
Regulatory Classification
Identification
A noncontinuous ventilator (intermittent positive pressure breathing-IPPB) is a device intended to deliver intermittently an aerosol to a patient's lungs or to assist a patient's breathing.
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## 510(k) Summary, Section 807.92(a)(2)
:
| | K132988 |
|-------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitted by | Lung Assist, Inc.<br>4655 Kirkwood Court<br>Boulder, CO 80301 |
| Contact Person | Lewis Ward<br>Vice President Operations<br>4655 Kirkwood Court<br>Boulder, CO 80301<br>303-516-1024<br>303-530-4774 Fax<br>lwward@qwest.net |
| Date Prepared | March 26, 2014 |
| Product Name | Trade Name: Vital Cough<br>Common Name: Cough Assist Device |
| Classification | Noncontinuous Ventilator<br>868.5905, Product Code NHJ<br>Class II, Anesthesiology Panel |
| Intended Use | The Vital Cough is intended for use on patients unable to<br>cough or clear secretions effectively due to reduced peak<br>cough expiratory flow resulting from high spinal cord<br>injuries, neuromuscular deficits or severe fatigue associated<br>with intrinsic lung disease. It may be used either with a<br>facemask, mouthpiece, or an adapter to a patient's<br>endotracheal tube or tracheostomy tube. For use in a<br>hospital, institutional setting, or home use given adequate<br>training. For use on adult or pediatric patients. |
| Technological Characteristics | The device is an electromechanical software controlled<br>device housed in a metal and polymer case. A touch screen<br>displays outputs and receives commands from the user. The<br>device develops positive and negative pressure through an<br>adjustable blower. In inhale mode the lungs are inflated.<br>The device rapidly shifts to providing negative pressure with<br>the intended goal of rapidly deflating the lungs to stimulate<br>an effective patient cough. A flutter feature developed by an<br>oscillator butterfly valve may be activated during exhalation<br>to assist in loosening and removing secretions. |
| Non-clinical Testing | The Vital Cough complies with the IEC 60601-1 general<br>requirements for electrical safety and IEC 60601-1-2<br>electromagnetic compatibility standards. No toxic substances<br>have been found in the output air of the device. The device<br>conforms to ISO 9703 anesthesia and respiratory care alarm<br>signals, auditory and visual. Characterization by pressure and<br>flow of the Acapella predicate and the Vital Cough with<br>flutter feature is included in this submission. |
... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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| Substantial Equivalence | The Vital Cough with flutter feature is substantially<br>equivalent to the Vital Cough without a flutter feature<br>(K120277) and the Acapella flutter device (K002768) based<br>on comparative testing, compared specifications, waveform<br>characterization and analysis, and indications for use. |
|-------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|-------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Feature | Vital Cough with<br>Flutter | Vital Cough<br>K120277<br>(predicate device) | Acapella<br>K002768<br>(predicate device) |
|---------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Maximum Pressures | +/- 50 cm H2O | +/- 50 cm H2O | Human effort<br>19 cm H2O |
| Maximum Exhalation<br>Peak Flow | 269 LPM | 420 LPM | 71 LPM |
| Flutter Frequency | 0-20 Hz | No flutter | 0-19 Hz |
| Flutter Waveform<br>Technology | Square waveform | No flutter | Square waveform |
| Benefits | Creates a negative expiratory pressure, a positive inspiratory pressure, and vibrations. Improves secretion clearance. Adjustable frequency and pressure. Accommodates patients with very low flow rates. Creates a positive inspiratory pressure | Creates a negative expiratory pressure and a positive inspiratory pressure. Improves secretion clearance. Adjustable pressure. Accommodates patients with very low flow rates. Creates a positive inspiratory pressure | Creates a positive expiratory pressure (PEP) and vibration therapy. Improves secretion clearance. Inhalation without removing device from the patient's mouth. The device performs in any spatial orientation. Allows patients to adjust frequency and pressure. Accommodates patients with very low flow rates. No effect on inspiration |
## Key Feature Comparison, MI/E Device
.
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| Mode of Operation | - Automatic and<br>manual modes<br>- Microprocessor<br>controlled<br>- Limited to 6 cycles | - Automatic and<br>manual modes<br>- Microprocessor<br>controlled<br>- Limited to 6 cycles | - Manual mode<br>- Recommends<br>several cycles |
|-----------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Inhalation,<br>Exhalation, and<br>Pause Times | 0 to 5 seconds, 0.2<br>second increments | 0 to 5 seconds, 0.2<br>second increments | Human effort |
| Line<br>Voltage<br>Frequency | 120-240V universal<br>50/60 Hz | 120-240V universal<br>50/60 Hz | Non-powered |
| Indications | For use on any patient<br>unable to cough or<br>clear secretions<br>effectively due to<br>reduced peak cough<br>expiratory flow,<br>resulting from high<br>spinal cord injuries,<br>neuromuscular deficits<br>or severe fatigue<br>associated with<br>intrinsic lung disease.<br>It may be used either<br>with a facemask or<br>mouthpiece, or with an<br>adapter to a patient's<br>endotracheal or<br>tracheostomy tube | For use on any patient<br>unable to cough or<br>clear secretions<br>effectively due to<br>reduced peak cough<br>expiratory flow,<br>resulting from high<br>spinal cord injuries,<br>neuromuscular deficits<br>or severe fatigue<br>associated with<br>intrinsic lung disease.<br>It may be used either<br>with a facemask or<br>mouthpiece, or with an<br>adapter to a patient's<br>endotracheal or<br>tracheostomy tube | Intended for use as a<br>positive expiratory<br>pressure (PEP)<br>device.<br>Indication for use:<br>For use as a single<br>patient use, hand-<br>held secretion<br>clearance and lung<br>expansion device that<br>creates vibratory<br>positive expiratory<br>pressure when a<br>patient exhales<br>through the device. |
## Summary:
The Vital Cough with flutter is substantially equivalent to the Vital Cough cleared device cleared under K120277 based on intended use, comparative testing, frequency and waveform. The MIE design is in both devices. The added flutter feature has the same indication for use to clear secretions as the original Vital Cough and the Acapella. The pressure and flow differences are due to the Vital Cough MI/E activity. The flutter activity is substantially equivalent. The Vital Cough with flutter is a mechanical device driven by a fan. The Acapella is driven by himan effort. The Vital Cough device does the work for the patient.
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Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center -- WO66-G609 Silver Spring, MD 20993-0002
March 28, 2014
Lung Assist. Incorporation Mr. Lewis Ward Vice President Operations 4655 Kirkwood Court Boulder, CO 80301
Re: K132988
Trade/Device Name: Vital Cough Regulation Number: 21 CFR 868.5905 Regulation Name: Noncontinuous Ventilator (IPPB) Regulatory Class: II Product Codc: NHJ Dated: February 11, 2014 Received: February 25, 2014
Dear Mr. Ward:
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. Ilsting 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 cither 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. Ward
- 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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Small Manufacturers, International and Consumer Assistance at its tollfree 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" (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/Safetw/ReportalProblem/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.
FOR
Erin I. Keith, M.S. Acting Director Division of Anesthesiology, General Hospital, Respiratory. Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
Sincercly yours.
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DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
## Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement below.
510(k) Number (if known) K132988
Device Name Vital Cough
Indications for Use (Describe)
The Vital Cough is intended for use on patients unable to cough or clear secretions effectively due to reduced peak cough expiratory flow resulting from high spinal cord injuries, neuromuscular deficits or severe fatigue associated with intrinsic lung disease. It may be used either with a facemask, mouthpiece, or an adapter to a patient's endotracheal tube or tracheostomy tube. For use in a hospital, institutional setting, or home use given adequate training. For use on adult or pediatric patients.
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) | |
| | Anya C. Harry -S<br>2014.03.28<br>12:53:41 -04'00' |
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FORM FDA 3881 (1/14)
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.