A HaloLite Adaptive Aerosol Delivery, (AAD) system, a handheld nebulizer system including a dedicated compressor is designed to aerosolize commonly prescribed liquid medication (except Pentamidine) for inhalation by the patient in the home care, nursing home or hospital environment. The new dedicated compressor provides a compressed air source similar to the original predicate device compressed air sources, Invacare Mobilaire and regulated wall air.
Device Story
HaloLite AAD system is a portable, single-patient-use nebulizer; delivers aerosolized liquid medication. System comprises hand-piece with pressure transducer, microprocessor control, medication chamber, and dedicated compressor. Device analyzes patient breathing patterns to determine aerosol pulse time; pulses aerosol during inspiration only; monitors breathing to adapt to changes throughout treatment. System indicates treatment completion when preset dose delivered. Used in home, hospital, or nursing home settings; operated by patient or clinician. Output is aerosolized medication; helps healthcare providers ensure precise, reproducible drug delivery; benefits patient through optimized inhalation therapy.
Clinical Evidence
No clinical data provided. Substantial equivalence is based on bench testing and comparison of technological characteristics and performance specifications against predicate devices.
Technological Characteristics
Handheld nebulizer system; microprocessor-controlled; breath-actuated. Components: hand-piece, pressure transducer, medication chamber, dedicated compressor. Dynamic pressure at nebulizer jet: 1.75 bar. Gas source: compressed air. Single-patient, multi-use. Provided clean, non-sterile. No applicable performance standards under Section 514.
Indications for Use
Indicated for patients requiring nebulized drug delivery via a mouthpiece in home, hospital, or nursing home settings. Contraindicated for use with Pentamidine.
Regulatory Classification
Identification
A nebulizer is a device intended to spray liquids in aerosol form into gases that are delivered directly to the patient for breathing. Heated, ultrasonic, gas, venturi, and refillable nebulizers are included in this generic type of device.
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Medic-Aid Limited Heath Place, Bognor Regis, West Sussex, UK PO22 9SL Telephone (01243) 840888 Fax (01243) 846100
K991685
Image /page/0/Picture/2 description: The image shows the logo for MEDIC-AID. The logo consists of two black triangles that are next to each other, forming a mountain-like shape. Below the triangles is the text "MEDIC-AID" in black, sans-serif font, with a registered trademark symbol next to the word "AID".
### Non-Confidential Summary of Safety and Effectiveness
page 1 of 3 May 14, 1999
Medic-Aid Ltd. Heath Place Bognor Regis, West Sussex PO22 9SL United Kingdom
| Tel - 011-44-1243-840888 | Fax - 011-44-1243-846100 |
|----------------------------|----------------------------------------------------|
| Official Contact: | Ed Walters, Quality Manager |
| Proprietary or Trade Name: | HaloLite ™ AAD with Dedicated Compressor System |
| Common/Usual Name: | Nebulizer |
| Classification Name: | Nebulizer, Direct Patient Interface |
| Predicate Devices: | Medic-Aid HaloLite ADD System - K981772 |
| | Invacare - Medi-Pump Mobilaire (50 psi Compressor) |
| | K950867 |
#### Device Description:
The Medic-Aid HaloLite AAD system with dedicated compressor is a single patient use, prescribed portable nebulizer designed to deliver a precise and reproducible dose of aerosolized liquid medication. The device consists of a hand-piece containing a pressure transducer, a microprocessor control system, a medication chamber, and dedicated compressor to provide a compressed air source. Other compressed air sources can be -Invacare Mobilaire (50 psi compressor) and regulate wall compressed air.
The HaloLite system analyses the patient's breathing pattern to determine the aerosol pulse time. The system then pulses aerosol during inspiration only. Each pulse of aerosol is matched according to the inspiratory time. HaloLite continues to monitor the breathing pattern in order to adapt to changes in breathing throughout the treatment. When the preset dose has been delivered, the system indicates that the treatment is complete.
AUG 13 1099
Page 2 - 2
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### Non-Confidential Summary of Safety and Effectiveness
page 2 of 3 May 14, 1999
| 1. Intended use - | Aerosolization of commonly prescribed liquid drug (except Pentamidine) for inhalation by the patient. |
|-------------------------|-------------------------------------------------------------------------------------------------------|
| 2. Environment of Use - | Single patient / multi-use for Home, Hospitals and Nursing Homes |
| 3. Patient Population - | Patients requiring nebulized drug delivery via a mouthpiece. |
### Comparison to Other Legally Marketed Predicate Devices
The following comparison table details the primary attributes of the intended device and legally marketed predicate devices. The most significant attributes have been listed.
| | 20<br>2000 | |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|--|
| アイディース (comment) starter (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c)<br>Callery | | |
| A STATE A STATE A BREAK A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEATH A BEACH AND A BEACH AND A BEACH AND A | | |
| All Children<br>Carl September 200<br>AND STORES OF COLLECTION<br>LOLA STATUS COLLECTION COLLEGION CONSULTION CONSULTION CONSULTION CONSULTION CONSULTION CONSULTION CONSULTION CONTRACTOR COLLECTION CONTRACTOR CONTRACTOR CONTRACTOR CONTRACTO | | |
| RECORD OR COLORICOLOGY OOR JULINER<br>2.5 ALDESS 3.0 SMAN | | |
| And State of Status and | | |
| ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘ | And Comment | |
| Albert of the Children | | |
| And Court of Street of Street, Inc.<br>And Control Concession Come of Children Company Company Company Comments of Children Comments of Children Comments of Children Comments of Children Comments of Children Comme<br>11/2019-11-20 | 1999 | |
| in th<br>Company of the program and the comments of the county of<br>Same of the consisted on the consisted on the contraction of the contribution of the comments of | | |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | |
| ﺍﻟﻤﺴﺎﻋﺪﺓ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴﺘﻮﻯ ﺍﻟﻤﺴ<br>Company of the country of the county of the county of<br>STATE OF CONSULT OF CONSULTION OF | | |
| Control Concession Company Construction of Children | | |
| Contract<br>The first of the country of the county of<br>DOCK CARD FOR COLL | | |
| And Control Controller | | |
| 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 | Age | |
| 177507 741<br>and the contraction of the production of the contribution of the county of the county | | |
| The first of the first of the first of the first of the first of the first of the first of the first of the first of the first and<br>CONSULTION COLLECTION | | |
## Use |
| Intended to nebulize drugs | Yes | Yes | Yes |
|--------------------------------------------------------|-----|-----|-----|
| Synchronized Delivery of<br>Nebulized drug | Yes | Yes | Yes |
| Drug Delivery on demand | Yes | Yes | Yes |
| Used in hospitals, home care,<br>nursing home settings | Yes | Yes | Yes |
| Single Patient / Multi-use | Yes | Yes | Yes |
- Design July 2017 11:40 11 -
| Dynamic Pressure at<br>Nebulizer Jet | 1.75 bar | 1.75 bar | 1.75 bar |
|--------------------------------------|----------------|----------------|----------------|
| Gas Source - Compressed Air | Yes | Yes | Yes |
| Software Driven | Microprocessor | Microprocessor | Microprocessor |
{2}------------------------------------------------
# Non-Confidential Summary of Safety and Effectiveness
page 3 of 3 May 14, 1999
| Attribute | HaloLite AAD<br>Compressor<br>System | HaloLite AAD<br>System<br>K981772<br>+ Wall supply<br>driving gas | HaloLite AAD<br>System<br>K981772<br>+ Medi-Pump<br>K950867 |
|----------------------------------------|-------------------------------------------------------|-------------------------------------------------------------------|-------------------------------------------------------------|
| Design | | | |
| Drug delivery triggered by | Patient<br>Inhalation<br>Airway<br>Pressure<br>Signal | Patient<br>Inhalation<br>Airway<br>Pressure<br>Signal | Patient<br>Inhalation<br>Airway<br>Pressure<br>Signal |
| Used with Mouthpiece | Yes | Yes | Yes |
| Materials | | | |
| No significant changes | | | |
| Packaging | | | |
| Provided clean, non-sterile | Yes | Yes | Yes |
| Performance Standards / Specifications | | | |
| None applicable under Section 514 | Yes | Yes | Yes |
# Differences Between Other Legally Marketed Predicate Devices of Children
There are no differences in performance, safety, or efficacy between the new dedicated compressor and the Invacare compressor or regulated wall gas.
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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a stylized representation of a human figure with three flowing lines forming the body and head. The figure is positioned within a circle, and the text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" is arranged around the circumference of the circle.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
AUG 1 3 1999
Mr. Paul E. Dryden Medic-Aid, Inc. c/o ProMedic, Inc. 6329 W. Waterview Court McCordsville, IN 46055-9501
Re: K991685 HaloLite ADD System with Compressor Regulatory Class: II (two) Product Code: 73 CAF Dated: May 14, 1999 Received: May 17, 1999
Dear Mr. Dryden:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 A substantially equivalent determination assumes compliance to 895. with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in requlatory action. In addition, FDA may publish further announcements concerning your device in the Federal Reqister. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or requlations.
{4}------------------------------------------------
Page 2 - Mr. Paul E. Dryden
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Thomas J. Callahan
Thomas J. Callahan, Ph.D. Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
#### INDICATIONS FOR USE
Page 1 of 1
Pursuant to the Notice of February 6, 1996 regarding listing of Indications for Use on a separate sheet, the following is per that request.
| 510(k) Number: | K991685 (To be assigned) |
|----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device Name: | HaloLite AAD System with Compressor (modification) |
| Intended Use : | A HaloLite Adaptive Aerosol Delivery, (AAD) system, a handheld nebulizer system including a dedicated compressor is designed to aerosolize commonly prescribed liquid medication (except Pentamidine) for inhalation by the patient in the home care, nursing home or hospital environment. |
| | The new dedicated compressor provides a compressed air source similar to the original predicate device compressed air sources, Invacare Mobilaire and regulated wall air. |
Concurrence of CDRH, Office of Device Evaluation (ODE)
Jacinta A. Weatherspoon
(Division Sign-Off) Division of Cardiovascular, Respiratory, and Neurological Devices
510(k) Number
Prescription Use J (Per CFR 801.109)
or
Over-the-counter use ___
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Part 1 — Search, results, and everyday workflows 16 min
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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.
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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.
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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.
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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.
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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.
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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.