K221210 · Nanovibronix, Inc. · PFW · Nov 23, 2022 · Physical Medicine
Device Facts
Record ID
K221210
Device Name
PainShield MD PLUS
Applicant
Nanovibronix, Inc.
Product Code
PFW · Physical Medicine
Decision Date
Nov 23, 2022
Decision
SESE
Submission Type
Special
Regulation
21 CFR 890.5300
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The PainShield MD PLUS is intended to apply ultrasonic energy to generate deep heat within body tissues for the treatment of selected medical conditions such as relief of pain, muscle spasms, and joint contractures.
Device Story
PainShield MD PLUS is an ultrasonic diathermy device; generates continuous wave (CW) ultrasound at 90 kHz; utilizes two 6 cm² disk-shaped transducers (Lead Zirconate-Titanate PZT) integrated into self-adhering patches. Driver unit is battery-powered, rechargeable, and portable; intended for home healthcare environment. Device applies deep heat to tissues to treat pain, muscle spasms, and joint contractures. User applies patches to skin; no ultrasound gel typically required, though optional for hairy sites. Therapy cycle involves 30-minute active/idle phases for 3-hour duration. Output monitored via LED/buzzer indicators and digital LCD timer. Benefits include non-invasive pain relief and muscle relaxation; allows treatment of less accessible areas like heel, Achilles tendon, and wrist.
Clinical Evidence
Bench testing only. Device passed IEC 60601-1 (safety), IEC 60601-1-2 (EMC), IEC 60601-1-11 (home healthcare environment), and ISO 10993-1 (biocompatibility) standards. Software verification and validation testing also passed.
Indicated for patients requiring deep heat therapy for relief of pain, muscle spasms, and joint contractures.
Regulatory Classification
Identification
An ultrasonic diathermy 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.
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November 23, 2022
NanoVibronix, Inc. Hrishikesh Gadagkar Regulatory Affairs 525 Executive Blvd. Elmsford, New York 10523
Re: K221210
Trade/Device Name: PainShield MD PLUS Regulation Number: 21 CFR 890.5300 Regulation Name: Ultrasonic Diathermy Regulatory Class: Class II Product Code: PFW Dated: April 23, 2022 Received: April 27, 2022
Dear Hrishikesh Gadagkar:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
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
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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) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
# Lauren E. Woodard -S
for Amber Ballard, PhD Assistant Director DHT5B: Division of Neuromodulation and Physical Medicine Devices OHT5: Office of Neurological and Physical Medicine Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K221210
Device Name PainShield MD PLUS
Indications for Use (Describe)
The PainShield MD PLUS is intended to apply ultrasonic energy to generate deep heat within body tissues for the treatment of selected medical conditions such as relief of pain, muscle spasms, and joint contractures.
Type of Use (Select one or both, as applicable)X Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
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This summary of 510(K) safety and effectiveness information is being submitted in accordance with the requirement of 21 CFR 807.92.
Date of the summary prepared: November 22, 2022
#### Submitter's Information:
510(k) Owner's Name: NanoVibronix, Inc. Address: 525 Executive Blvd., Elmsford, NY 10523 Phone: (410) 245-0501 Contact Name: Hrishikesh Gadagkar Contact Email: gadagkar@idonea-solutions.com
## Device Information:
Manufacturer: NanoVibronix, Inc. Trade Name: PainShield MD PLUS 510(k) Number: K221210 Product Code: PFW Device Classification: Class II Regulation Number: 21 CFR 890.5300
#### Predicate Device:
Manufacturer: NanoVibronix, Inc. Trade Name: PainShield MD 510(k) Number: K081075 Product Code: PFW Device Classification: Class II Regulation Number: 21 CFR 890.5300
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#### Device Description:
The PainShield MD PLUS is an electrically powered ultrasonic diathermy device intended to relieve pain, muscle spasms, and joint contractures. It is used to apply deep heat to tissues in the body with a transducer/applicator that is incorporated into a bandage-like patch that adheres to the skin.
The PainShield MD PLUS is used to generate continuous wave (CW) ultrasound at 90 kHz, through a reusable applicator/transducer that covers an area of about 6 cm². The small applicators allow treatment of less accessible body parts such as, for example, the heel, the Achilles tendon and the wrist. The device includes the above-mentioned transducers with a cable which connects to a small, rechargeable, battery-powered driver unit and self-adhering patch to apply the transducer on to the skin. The unit is also supplied with a charger used for recharging the battery. Ultrasonic gel is typically not required to be used with the PainShield MD PLUS device. However, for treatment over hairy sites where there might not be adequate sonic coupling between the applicator and the skin, users are instructed to apply standard, FDA-cleared ultrasound gel to the site to improve coupling.
#### Indications for Use:
The PainShield MD PLUS is intended to apply ultrasonic energy to generate deep heat within body tissues for the treatment of selected medical conditions such as relief of pain, muscle spasms, and joint contractures.
| Test | Summary Results |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------|
| IEC 60601-1: 2005 + CORR. 1 (2006) + CORR. 2<br>(2007) + A1:2012 (3rd Edition), Medical Electrical<br>Equipment - Part 1: General Requirements for Basic<br>Safety and Essential Performance | All applicable tests passed. |
| IEC 60601-1-2: 2014, Medical Electrical Equipment -<br>Part 1-2: General Requirements for Basic Safety and<br>Essential Performance, Collateral Standard,<br>Electromagnetic Compatibility | All applicable tests passed. |
| IEC 60601-1-11: 2015 (2nd Edition) General<br>requirements for basic safety and essential performance -<br>Collateral Standard: Requirements for medical electrical | All applicable tests passed. |
#### Test Summary for PainShield MD PLUS:
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| equipment and medical electrical systems used in the<br>home healthcare environment. | |
|------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------|
| Biocompatibility Testing<br>ISO 10993-1: Biological evaluation of medical devices -<br>Part 1: Evaluation and testing within a risk management<br>process. | All applicable tests passed. |
| Software Verification and Validation | All applicable tests passed. |
### Comparison to Predicate Device:
The technological characteristics, features, specifications, materials, mode of operation, and intended use of PainShield MD PLUS System is substantially equivalent to the predicate device (PainShield MD).
The differences between the PainShield MD PLUS and the predicate device do not raise new issues of safety or effectiveness.
| Parameter | PainShield MD PLUS | PainShield MD |
|-----------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510(k) Number | K221210 | K081075 |
| Indications for<br>Use | The PainShield MD PLUS is<br>intended to apply ultrasonic energy<br>to generate deep heat within body<br>tissues for the treatment of selected<br>medical conditions such as relief of<br>pain, muscle spasms, and joint<br>contractures. | The PainShield MD diathermy<br>device is intended to apply<br>ultrasonic energy to generate deep<br>heat within body tissues for the<br>treatment of selected medical<br>conditions such as relief of pain,<br>muscle spasms, and joint<br>contractures. |
| Classification | Class II<br>21 CFR 890.5300<br>Ultrasonic Diathermy | Class II<br>21 CFR 890.5300<br>Ultrasonic Diathermy |
| Product Code | PFW | PFW |
| Principle of<br>Operation | Device applies deep heat to tissues | Device applies deep heat to tissues |
| | | |
| | | |
| Major System<br>Components | (Ultrasound) Driver<br>Separate (Ultrasound) Actuator and<br>Self-adhesive Patch<br>AC Adapter | (Ultrasound) Driver<br>Actuator and Self-adhesive Patch<br>Not Publicly Available |
| Performance Specifications | | |
| Energy source<br>frequency | 90 kHz | 90 kHz |
| Output power: | 400 mW | Not Publicly Available |
| Output modes | CW | Not Publicly Available |
| Output channels | 2 | Not Publicly Available |
| Transducer | Two 6 cm² disk shaped transducers | One 6 cm² disk shaped transducer |
| Transducer<br>material | Lead Zirconate-Titanate PZT | Not Publicly Available |
| Maximum Beam<br>Non-Uniformity<br>Ratio | 6.0:1 | Not Publicly Available |
| Effective<br>Radiating Area | 6 cm² | 6 cm² |
| Therapy Cycle | For each actuator, alternate between<br>30 minutes Active Phase followed by<br>30 minutes of Idle Phase for a total<br>duration of 3 hours. Treatment can be<br>shut off anytime manually. | Not Publicly Available |
| Physical Size and Controls | | |
| | Height: 113 mm<br>Width: 39.4 mm<br>Depth: 12.6 mm | Not Publicly Available |
| Weight | ~227 grams | Not Publicly Available |
| Display: | LED and buzzer status indicators and<br>digital LCD timer display. | Not Publicly Available |
| Battery type<br>recommended: | Rechargeable lithium ion battery | Rechargeable battery |
| Battery Voltage: | 7.4 V | Not Publicly Available |
| Battery Life: | 3 hours continuous operation | Not Publicly Available |
| Mode of<br>operation | Continuous wave | Not Publicly Available |
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The technological characteristics, features, specifications, materials, mode of operation, and intended use of PainShield MD PLUS is substantially equivalent to the predicate device (PainShield MD). The differences between the PainShield MD PLUS and the predicate device (such as two actuators, separation of the actuator, and self-adhesive patch) do not raise new issues of safety or effectiveness. The second actuator available with PainShield MD PLUS is intended to increase the physical area over which the therapy is made available. The tandem operation of the two actuators does not introduce new safety concerns for the user. The separation of the actuator and the self-adhesive patch improves the ability to reuse the actuator and replace the self-adhesive patch after each use.
#### Conclusion:
The PainShield MD PLUS is substantially equivalent to the predicate device (PainShield MD manufactured by NanoVibronix, Inc.).
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.