K063728 · Alfa Tech Medical Systems, Ltd. · IMG · Apr 4, 2007 · Physical Medicine
Device Facts
Record ID
K063728
Device Name
TNN-DU810 NON-INVASIVE SUBDERMAL THERAPY SYSTEM
Applicant
Alfa Tech Medical Systems, Ltd.
Product Code
IMG · Physical Medicine
Decision Date
Apr 4, 2007
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.5860
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Therapeutic Ultrasound: 1. Pain relief 2. Reduction of muscle spasm 3. Localized increase of blood flow 4. Increase range of motion of contracted joints using heat and stretch techniques Neuromuscular Stimulation: 1. Symptomatic relief of chronic intractable pain, acute post traumatic pain or acute surgical pain 2. Temporary relaxation of muscle spasm 3. Prevention of post-surgical phlebo-thrombosis through immediate stimulation of calf muscles 4. Increase of blood flow in the treatment area. 5. Prevention or retardation of disuse atrophy in post-injury type conditions 6. Muscle re-education 7. Maintaining or increasing range of motion Therapeutic Massager: 1. Relieves muscle spasms 2. Provides temporary relief of minor muscle aches and pains 3. Temporarily improves local blood circulation 4. Temporarily reduces the appearance of cellulite
Device Story
TNN-DU810 is a multi-modal therapy system combining ultrasound diathermy, neuromuscular electrical stimulation (NMES), and vacuum-based therapeutic massage. System includes console, control/display panel, ultrasound transducers, conductive electrodes, and vacuum roller head. Components function independently with no electrical interconnection. Operator (clinician) uses touch screen interface to adjust power, mode, and treatment parameters. Ultrasound provides thermal/mechanical effects for pain and circulation; NMES stimulates muscles for atrophy prevention and re-education; vacuum roller provides mechanical massage for circulation and cellulite appearance reduction. Device used in clinical settings to manage musculoskeletal conditions and post-surgical recovery. Output allows clinicians to deliver targeted physical therapy, potentially improving patient mobility, reducing pain, and managing muscle function.
Clinical Evidence
No clinical data. Substantial equivalence is supported by non-clinical bench testing, including air flow, vacuum pressure, timer accuracy, electrical safety, and EMC testing.
Technological Characteristics
Class I/II equipment, Type BF applied part. Dual-frequency ultrasound (1 MHz/3 MHz), NMES, and vacuum suction. Vacuum system: continuous/pulsed modes, max depression -820 mbar. Ultrasound intensity max 1.5 W/cm². Interface: touch screen with audio feedback. Components: ultrasound applicators, conductive electrodes, vacuum roller head. Software-controlled console. Sterilization: not specified (accessories are standard medical components).
Indications for Use
Indicated for patients requiring pain relief, muscle spasm reduction, increased blood flow, range of motion maintenance, or muscle re-education. Includes treatment for chronic intractable, acute post-traumatic, or acute surgical pain; prevention of post-surgical phlebo-thrombosis; prevention/retardation of disuse atrophy; and temporary reduction of cellulite appearance. Prescription use only.
Regulatory Classification
Identification
An ultrasound and muscle stimulator for use in applying therapeutic deep heat for selected medical conditions is a device that applies to specific areas of the body ultrasonic energy at a frequency beyond 20 kilohertz and that is intended to generate deep heat within body tissues for the treatment of selected medical conditions such as relief of pain, muscle spasms, and joint contractures, but not for the treatment of malignancies. The device also passes electrical currents through the body area to stimulate or relax muscles.
Predicate Devices
The DU857 Dual Frequency Ultrasound Therapy and Muscle Stimulator System (K052340)
Dermosonic Non-Invasive Subdermal Therapy System (K024307)
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# APR 4 - 2007
### Exhibit #1
### 510(K) SUMMARY
This summary of 5l0(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR §807.92.
The assigned 510 (k) numbers is:_
#### 1. Submitter's Identification:
Alfa Tech Medical Systems Ltd. 5A Kaf Tet Be November St. Apt. 29 Ramat Hanassi, Bat-Yam lsrael
Date Summary Prepared: March 12, 2007
### Contact Persons:
Mr. Ilan Feferberg COO Alfa Tech Medical Systems, Ltd. 5A Kaf Tet Be November St. Apt. 29 Ramat Hanassi, Bat-Yam Israel + 972-3 5049039 Tel: + 972-3 5049039 Fax: E-mail: imft@zahav.net.il
Mr. Yossi Ben David Alfa Tech QA Manager + 972-9 7711018 Tel: + 972-9 7711019 Fax: E-mail: yossi@ordos.co.il
#### 2. Name of the Device:
- a. TRADE NAME: The TNN-DU810 Non-Invasive Subdermal Therapy System
- b. CLASSIFIČATION NAME: Ultrasonic Diathermy/Muscle Stimulator/Therapeutic Massager
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- Common or Usual Name: Ultrasound Diathermy/Powered Muscle Stimulator and 3. Therapeutic Massager.
- Predicate Devices Information: 4.
- AlfaTech Medical Systems, Ltd. The DU857 Dual Frequency Ultrasound Therapy . and Muscle Stimulator System, K#052340.
- . Sybaritic Inc., Dermosonic Non-Invasive Subdermal Therapy System, K#024307.
#### Device Description: 5.
י
The TNN-DU810 Non-Invasive Subdermal Therapy System is comprised of the following main components:
- . A system console including software and control electrodes;
- A control and display panel: .
- Device accessories including muscle stimulator electrodes (ME2221, Mettler . Corp., K#013192) and cables, ultrasound transducers (applicators) (ME7513, Mettler Corp.) acoustic gel (Sonigel, Mettler Corp), and cables. The electrodes. ultrasound transducers and acoustic gel have all been cleared under the Mettler Electronics Corp. 510(k). Also included is a Dermosonic vacuum treatment roller head, cleared under the Dermosonic device. K024307.
The TNN-DU810 device has dual frequencies ultrasound therapy, muscle stimulator systems and therapeutic vacuum massager.
The user friendly interface comprises keyboard, touch screen and audio feedback. The screen provides operator information about operation mode and signal intersities. Large control knobs on the touch screen make adjusting power for ultrasound and muscle stimulation.
The system consists of the Alfatech DU857 device (K#052340) and the Dermosonic Therapeutic Vacuum Applicator, a component cleared in the Dermosonic K#024307 ..
The frequency Ultrasound Therapy, Muscle Stimulator System is identical to the DU857. It is important to note that there is no electric connection between the ultrasound therapy, muscle stimulator system and the therapeutic vacuum massager.
Each of the two components of the system (ultrasound plus neuromuscular stimulation) and the therapeutic massager function independently and have no connection between them.
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#### Intended Use: 6.
Therapeutic Ultrasound:
- 1. Pain relief
- 2. Reduction of muscle spasm
- 3. Localized increase of blood flow
- 4. Increase range of motion of contracted joints using heat and stretch techniques
Neuromuscular Stimulation:
- 1. Symptomatic relief of chronic intractable pain, acute post traumatic pain or acute surgical pain
- 2. Temporary relaxation of muscle spasm
- 3. Prevention of post-surgical phlebo-thrombosis through immediate stimulation of calf muscles
- 4. Increase of blood flow in the treatment area.
- 5. Prevention or retardation of disuse atrophy in post-injury type conditions
- 6. Muscle re-education
- 7. Maintaining or increasing range of motion
Therapeutic Massager:
- 1. Relieves muscle spasms
- 2. Provides temporary relief of minor muscle aches and pains
- 3. Temporarily improves local blood circulation
- 4. Temporarily reduces the appearance of cellulite
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### Comparison to Predicate Devices: 7.
Comparison of technological characteristics to a legally marketed predicate device is given in the table below:
Table 1. Comparison of general characteristics to legally marketed predicate Dermosonic Non-Invasive Subdermal Therapy System:
### System.
| Item for comparison | Claimed device | Predicate device 2 |
|----------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510K # | K052340 | K024307 |
| Device Name | TNN-DU810 Non-Invasive<br>Subdermal Therapy System, | Dermosonic Non-Invasive Subdermal<br>Therapy System |
| Intended use | Therapeutic vacuum Massager,<br>Ultrasonic Diathermy and<br>neuromuscular stimulation,<br>including: temporarily improvement<br>local blood circulation and<br>temporarily reduction the<br>appearance of cellulite | Therapeutic vacuum Massager and<br>Ultrasonic Diathermy, including:<br>temporarily improvement local blood<br>circulation and temporarily reduction the<br>appearance of cellulite |
| Design | 1 model<br>2 ultrasound applicators<br>4 conductive electrodes<br>1 vacuum treatment roller head | 1 model<br>1 ultrasound applicators<br>3 vacuum treatment roller head |
| Specifications | Ground current leakage <40<br>micamp. | Not specified |
| Performance | Use friendly interface, easy to<br>operate | Use friendly interface, easy to operate |
| Frequency | 1 MHz±5%<br>3 MHz±5% | 1 MHz±3%<br>3 MHz±3% |
| Modes | Continuous | Continuous<br>Pulsed - 5% duty cycle<br>Pulsed - 10% duty cycle<br>Pulsed - 20% duty cycle |
| Maximum Intensity | 1.5 W/cm² | 2 W/cm² |
| Maximum Treatment<br>Time | 30 minutes - ultrasound<br>30 minutes - electrical stimulation<br>40 minutes - suction treatment | 30 minutes - ultrasound therapy<br>99 minutes - suction treatment |
| Classification | Protective Class I Equipment | Protective Class I Equipment |
| Type of applied part | BF type | BF type |
| Vacuum treatment<br>mode | Continuous or pulsed | Continuous or pulsed |
| Depression level | Pulse mode -820 mbar maximum<br>continuous mode- 125-210mbar | Pulse mode -820 mbar maximum<br>continuous mode- 125-210mbar |
| Vacuum treatment<br>roller head | 61.452 - Dermasonic | 61.452 - Dermasonic |
| | Each of the two components of the<br>system (ultrasound+<br>Neuromuscular Stimulation) and<br>the Therapeutic Massager function<br>independently and have no<br>connection between them. | Each of the two components of the system<br>(ultrasound) and the Therapeutic Massager<br>function independently and have no<br>connection between them. |
| Relaxation time | 0.36, 0.72, 1.08 or 1.44 sec | 0.36, 0.72, 1.08 or 1.44 sec |
| Suction time | 0.36, 0.72, 1.08, 1.44, 1.80. 2.16,<br>2.52, 2.88 or 3.24 sec | 0.36, 0.72, 1.08, 1.44, 1.80. 2.16, 2.52, 2.88<br>or 3.24 sec |
| Vacuum Pressure | 55, 80, 105, 125, 145, 160.185, 210, 240, 260, 260, 280, 310, 330, 365,440, 510, 615, 715 or 820 Mbar | 55, 80, 105, 125, 145, 160.185, 210, 240, 260, 260, 280, 310, 330, 365,440, 510, 615, 715 or 820 Mbar |
| Air Flow | 3500 l/hour | 3500 l/hour |
| Treatment time -<br>therapeutic vacuum<br>massager | 1 to 99 minutes | 1 to 99 minutes |
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### Discussion of Non-Clinical Tests Performed for Determination of Substantial 8. Equivalence as follows:
Performance testing to include: Air Flow Testing, Vacuum Pressure Testing, Timer Testing, etc. Also conducted: Electrical Safety Testing, EMC Testing, Risk Analysis, etc.
#### Discussion of Clinical Tests Performed: 9.
Not Applicable
#### 10. Conclusions:
·
The subject TNN-DU810 device is substantially equivalent to the predicate device (K#024307) in design and function, (using the predicate's own rollers and vacuum suction components) thereby achieving increased blood flow and therefore achieving temporary reduction in the appearance of cellulite.
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/5/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features a stylized depiction of an eagle or bird-like figure with three curved lines forming its body and wings. The logo is surrounded by text that reads "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" in a circular arrangement.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
APR 4 - 2007
Alfa Tech Medical Systems, Ltd. % MDI Consultants, Inc. Ms. Susan D. Goldstein-Faulk Official Correspondent 55 Northern Blvd., Suite 200 Great Neck, New York 11021
Re: K063728
Trade/Device Name: TNN-DU810 Subdermal Therapy System Regulation Number: 21 CFR 890.5860 Regulation Name: Ultrasound and muscle stimulator Regulatory Class: Class II Product Code: IMG, IMG, IMI, IPF, LIH and ISA Dated: March 15, 2007 Received: March 16, 2007
Dear Ms. Goldstein-Faulk:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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); 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.
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Page 2 - Ms. Susan D. Goldstein-Faulk
This letter will allow you to begin marketing your device as described in your Section 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), please contact the Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
Mark N. Melkerson
Mark N. Melkerso Director Division of General, Restorative Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Exhibit B
510(k) Number (if known): _
KO63728
1 Page 1 of of of
## Device Name: The TNN-DU810 Non-Invasive Subdermal Therapy System
### Indications For Use:
Therapeutic Ultrasound:
- 1. Pain relief
- 2. Reduction of muscle spasm
- 3. Localized increase of blood flow
- 4. Increase range of motion of contracted joints using heat and stretch techniques
Neuromuscular Stimulation:
- 1. Symptomatic relief of chronic intractable pain, acute post traumatic pain or acute surgical pain
- 2. Temporary relaxation of muscle spasm
- 3. Prevention of post-surgical phlebo-thrombosis through immediate stimulation of calf muscles
- 4. Increase of blood flow in the treatment area.
- 5. Prevention or retardation of disuse atrophy in post-injury type conditions
- 6. Muscle re-education
- 7. Maintaining or increasing range of motion
Therapeutic Massager:
- 1. Relieves muscle spasms
- 2. Provides temporary relief of minor muscle aches and pains
- 3. Temporarily improves local blood circulation
- 4. Temporarily reduces the appearance of cellulite
Prescription Use × (Per 21 CFR 801 Subpart D)
OR
Over-The Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|--------------------------------------------------------|--|
|--------------------------------------------------------|--|
(Division Sign-Off) Division of General, Restorative, and Neurological Devices
510(k) Number /<063728
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.