The AviaFit™ Device is intended for use to help prevent the onset of DVT in patients by stimulating blood flow in the legs (simulating muscle contractions). Furthermore, the unit can be used as an aid in the prophylaxis for DVT by persons traveling, or those expecting to be stationary for long periods of time (> 4 hours). This device can also be used to aid in the prevention of DVT, enhance blood circulation, diminish post-operative pain and swelling, reduce wound healing time, and aid in the treatment and healing of: stasis dermatitis, venous stasis ulcers, arterial and diabetic leg ulcers, chronic venous insufficiency, and reduction of edema in the lower limbs.
Device Story
Portable, battery-operated, calf-mounted device; uses mechanical intermittent compression to simulate muscle contractions. Control unit contains motor, gears, springs, and microprocessor; tugs and releases leg strap to exert pressure on tissue, aiding venous return. Operates in cycles of active pressure followed by release. Used by patients to prevent DVT, reduce edema, and treat leg ulcers. Healthcare providers or patients use device to improve circulation and reduce post-operative pain/swelling. Benefits include reduced DVT risk and accelerated wound healing.
Clinical Evidence
No clinical data. Non-clinical performance testing verified device meets design and performance specifications.
Technological Characteristics
Battery-operated, portable, calf-mounted device. Components: plastic control unit, leg strap, motor, gears, springs, microprocessor. Mechanism: mechanical intermittent compression. Connectivity: standalone. Sterilization: not specified.
Indications for Use
Indicated for patients requiring DVT prophylaxis, enhanced blood circulation, or treatment of venous/arterial/diabetic ulcers, stasis dermatitis, chronic venous insufficiency, and lower limb edema. Suitable for travelers or individuals stationary for >4 hours.
Regulatory Classification
Identification
A compressible limb sleeve is a device that is used to prevent pooling of blood in a limb by inflating periodically a sleeve around the limb.
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K111720
pg 1 of 3
## SECTION 5 - 510(K) SUMMARY
SEP 1 6 2011
# AVIAFIT™ DEVICE
510(k) Number K____________
## Applicant's Name:
| Company name: | FlowMedic Ltd. |
|---------------|--------------------------|
| Address: | 15 Alon Hatavor St. |
| | Industrial Area Caesarea |
| | Caesarea, 38900 |
| | ISRAEL |
| Tel.: | +972 (4) 627-5559 |
| Fax: | +972 (4) 627-5560 |
| E-mail: | info@flowmedic.com |
## Contact Person:
| Contact Name: | Ahava Stein |
|---------------|----------------------------------------------------------|
| Company: | A. Stein – Regulatory Affairs Consulting |
| Address: | 20 Hata'as St. (P.O.B. 124)<br>Kfar Saba 44425<br>ISRAEL |
| Tel.: | +972 (9) 7670002 |
| Fax.: | +972 (9) 7668534 |
| E-mail: | asteinra@netvision.net.il |
## Date Prepared:
Date: June 12, 2011
## Name of the device:
AviaFit™ Device
## Trade or proprietary name, if applicable:
AviaFit™ Device
## Common or usual name:
Compressible Limb Sleeve
б
{1}------------------------------------------------
#### Establishment Registration No .:
3005003051
#### Classification Name:
Compressible Limb Sleeve (21 CFR 870.5800, Product Code JOW)
#### Classification:
FDA has classified Compressible Limb Sleeve devices as Class II devices (product code JOW), which are reviewed by the Cardiovascular Devices Panel.
11720
g 208 3
#### Predicate Device:
The AviaFit™ Device is substantially equivalent to the originally cleared AviaFit™ Device (also manufactured by FlowMedic Ltd. and the subject of 510(k) document no. K071744) and the DVTcare CA5 device (manufactured by Doctor's Orders Inc. and the subject of 510(k) document no. K061125).
#### Device Description:
The FlowMedic AviaFit™ is a battery operated portable device integrating a patented mechanical intermittent compression technology to improve blood circulation in the lower limbs and reduce the risk of deep vein thrombosis, edema and leg discomfort during limited mobility conditions. The device is comprised of an actuator and is externally mounted on the calf.
The anatomical concave shaped control unit is connected to the leg strap and applied to the calf. Using an innovative low power consumption mechanism, the system tugs and releases the leg strap placed around the calf muscle, thus exerting intermittent cycles of external pressure build-up on the tissue, and a subsequent release, thus aiding venous return. Strap tug and release are controlled by a system of gears, springs, a motor and integrated microprocessor contained in the plastic control unit.
The device mimics the muscle activity during walking by acting sequentially in cycles of an active interval of exerting pressure on the muscle, thus augmenting blood flow. followed by a loose state for a period of time, allowing blood flow to return to the limb.
#### Intended Use / Indication for Use:
The AviaFit™ Device is intended for use to help prevent the onset of DVT in patients by stimulating blood flow in the legs (simulating muscle contractions). Furthermore, the unit can be used as an aid in the prophylaxis for DVT by persons traveling, or those expecting to be stationary for long periods of time (> 4 hours). This device can also be used to aid in the prevention of DVT, enhance blood circulation, diminish post-operative pain and
7
{2}------------------------------------------------
KWI720
pg 3 of 3
swelling, reduce wound healing time, and aid in the treatment and healing of: stasis dermatitis, venous stasis ulcers, arterial and diabetic leg ulcers, chronic venous insufficiency, and reduction of edema in the lower limbs.
#### Comparison of Technological Characteristics with the predicate device:
The technological characteristics of the AviaFit™ device are similar to the technological characteristics of the predicate devices including mechanism of action (e.g., compression to simulate muscle contraction), pressure range of compression time and cycle time, treatment site, indicators, power requirements, etc.
#### Non-Clinical Performance Data and Performance Standards
The performance tests performed on the original, cleared and identical AviaFit™ device verified that the operating characteristics and performance of the device are in accordance with its specifications.
#### Clinical Performance Tests:
Not Applicable.
#### Conclusions Drawn from Non-Clinical and Clinical Tests:
The non-clinical tests demonstrated that the AviaFit™ device meets its design and performance specifications.
#### Substantial Equivalence:
The AviaFit™ device has the same intended use as the DVTcare CA5 device. Furthermore, the AviaFit™ device has the same technological characteristics, (i.e., same mechanism of action, and similar design and specifications) as the originally cleared AviaFit™ device and the DVTcare CA5 predicate device. The differences in the new device do not raise new issues of safety or effectiveness. In conclusion, the modified AviaFit™ device is substantially equivalent to the predicate devices and therefore, may be cleared for marketing in the United States.
8
{3}------------------------------------------------
Image /page/3/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo is a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" written around the perimeter. Inside the circle is an abstract image of an eagle.
#### Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
FlowMedic Ltd. c/o Ms. Ahava Stein Regulatory Affairs Consulting 15 Alon Hatavor Street Industrial Arca Caesarea Caesarea, 38900 ISRAEL
CFP 16 2001
Re: K111720
AviaFit™ Device Regulation Number: 21 CFR 870.5800 Regulation Name: Compressible Limb Sleeve Regulatory Class: Class II Product Code: JOW Dated: June 14, 2011 Received: June 20, 2011
Dear Ms. Stein:
We have reviewed your Section 510(k) premarket notification of intent to market the indication We have reviewed your Section 510(ty promation health (for the indications
referenced above and have determined the device is substantials; interstate for use stated in the enclosure) to legally marketed predical devices marketed in interstate for use stated in the encrosity manatiment date of the Medical Device Americal Food. Drug commerce prof to May 20, 1977, the enatified in accordance with the Federal Frod. Drug.
devices that have been reclassified in accordance with the provisions of PMA N devices that nave been recuired in accordance who a premarket approval applications (PMA).
and Cosmetic Act (Act) that do not require approval of a previsions of the Act, The and Cosmetic Act (Act) that to not require approvince in controls provisions of the Act. The Act. The Act. The You may, meretore, market the device, solojost to magines for annual registration, listing of the and general controls provisions of the Fee mondov rounds on and probibitions against links and devices, good mandracturing practice, acomig and information related to contract frability adulteration. Please note: CDRT does not evaluate mombe truthful and not misleading.
{4}------------------------------------------------
#### Page 2 - Ms. Ahava Stein
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 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.lda.gov/AboutFDA/CentersOffices/CDRH/CDRHQffices/ucm115809.html 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 nonification" (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,
LL
Bram D. Zuckerman, M.D.
Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
### SECTION 4 - INDICATIONS FOR USE STATEMENT
510(k) Number (if known): K11172Ø
Device Name:
AviaFit™ Device
#### Indications for use:
The AviaFit 110 Device is intended for use to help prevent the onset of DVT in patients by stimulating blood flow in the legs (simulating muscle contractions). Furthermore, the unit can be used as an aid in the prophylaxis for DVT by persons traveling, or those expecting to be stationary for long periods of time (> 4 hours). This device can also be used to aid in the prevention of DVT, enhance blood circulation, diminish postoperative pain and swelling, reduce wound healing time, and aid in the treatment and healing of: stasis dermatitis, venous stasis ulcers, arterial and diabetic leg ulcers, chronic venous insufficiency, and reduction of edema in the lower limbs.
Prescription Use (Per 21 C.F.R. 801 Subpart D) OR
Over-The-Counter Use (Optional Format Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE) .
5
(Division Sign-Off) Division of Cardiovascular Devices
510(k) Number K111720
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Learn the FDA Browser
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.