The ProStim Reusable Neurostimulation Electrodes are intended for use as a disposable, conductive adhesive interface between the patient's skin and the Electrical Stimulator. ProStim Reusable Neurostimulation Electrodes are designed and intended to be used with marketed Electrical Stimulators, i.e. TENS (Transcutaneous Electrical Nerve Stimulation), MENS (Microcurrent Electrical Nerve Stimulation), EMS (Electrical Muscular Stimulation), IF (Interferential) or PGF (Pulsed Galvanic Stimulation).
Device Story
ProStim Reusable Neurostimulation Electrodes are non-sterile, disposable, laminated flexible structures. They function as a conductive interface between patient skin and external electrical stimulators (TENS, MENS, EMS, IF, or PGF). The device consists of a nonwoven tape or polyethylene foam/polypropylene substrate, a conductive plastic film, and a biocompatible conductive hydrogel. The hydrogel provides both adhesion and electrical coupling, eliminating the need for external securing materials. The electrode includes a 6-inch lead wire with a 0.080-inch female socket compatible with standard neurostimulation devices. Designed for single-patient, multiple-application use. Healthcare providers or patients use the device to deliver electrical stimulation for therapeutic purposes. Effectiveness is verified through impedance testing, ensuring comparability to predicate devices.
Clinical Evidence
Bench testing only. No clinical data provided. Evidence consists of biocompatibility testing (Cytotoxicity, Sensitization, and Primary Skin Irritation) per ISO 10993-1 and comparative impedance testing against predicate devices to demonstrate functional equivalence.
Technological Characteristics
Laminated flexible structure: nonwoven tape/polyethylene foam/polypropylene substrate, conductive plastic film, and biocompatible conductive hydrogel. 6-inch lead wire with 0.080-inch female socket. Passive electrical interface. Biocompatibility per ISO 10993-1. Non-sterile.
Indications for Use
Indicated for use as a conductive adhesive interface between patient skin and electrical stimulators (TENS, MENS, EMS, IF, or PGF) for patients requiring neurostimulation therapy.
Regulatory Classification
Identification
A cutaneous electrode is an electrode that is applied directly to a patient's skin either to record physiological signals (e.g., the electroencephalogram) or to apply electrical stimulation.
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K052875
# DEC 2 7 2005
### Exhibit #1
### 510(k) Summary
| Submitter's name: | Dan Woody<br>Summit Manufacturing, L.L.C.<br>1307 N. Glenville Dr.<br>Richardson, TX 75081<br>Phone: 972-235-9212<br>FAX: 972-235-0421<br>E-mail Address: Dan.Woody@namedical.com |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact person: | Dan Woody |
| Date prepared: | October 4, 2005 |
| Device Name: | ProStim Reusable Neurostimulation Electrodes |
| Classification Name: | Neurostimulation Electrodes |
| Predicate devices: | K050469 (Naimco, Inc.)<br>K010431 (Lead-Lok, Inc.) |
ProStim Reusable Neurostimulation electrodes arc non-Device Description: sterile, disposable laminated. flexible structures composed of materials commonly used in this application:
> First Layer-White spun laced nonwoven tape or White 1/32" thick Polyethylene foam or a polypropylene substrate, coated with biocompatible adhesive.
Second Layer- Conductive plastic film.
Third Layer-Biocompatible conductive hydrogel coupling media (
The electrodes are designed for single-patient/multiple application use. Because of the adhesive nature of the biocompatible hydrogel, no securing materials are required to secure the device to the patient's skin. The electrode has one type of connection point that can be used to connect the stimulation device to the electrodes. This connection point is compatible with all standard, marketed Neurostimulation devices.
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Lead wire assembly - 6" wire with .080 in. diameter female socket connected to one side of the wire.
Predicate Technological Characteristics Comparison: ProStim Reusable Neurostimulation electrodes are technologically equivalent to the predicate devices. They are physically and technically similar to those currently being marketed for "Neurostimulation" i.e., TENS (Transcutaneous Electrical Nerve Stimulation), MENS (Microcurrent Electrical Nerve Stimulation), EMS (Electrical Muscular Stimulation), IF (Interferential) and PGS (Pulsed Galvanic Stimulation).
Safety and Effectiveness: ProStim Reusable Neurostimulation electrodes are as safe and effective as the Naimco E-Z stik electrodes (K050469) and Lead-Lok (K010431) which were previously found to be substantially equivalent via 510(k) Premarket Notifications.
The first safety issue considered was whether the gel, which is used to adhere the electrode to the skin and which is the only portion of the electrode to maintain skin contact, would cause any skin irritation. The Katecho KM 10 Series of gels (file number K00870) and the Amgel 700 Series gels (file number K983741), which may be used in this family of electrodes, have passed the required skin sensitivity testing criteria as specified in the Tripartite Biocompatibility Guidance for Medical Devices and ISO 10993-1 requirements for skin contact. These tests include Cytotoxicity, Sensitization, and Primary Skin Irritation Tests.
Because there are no published performance standards for Neurostimulation electrodes, Summit Manufacturing, L.L.C. uses impedance levels as the criteria for effectiveness testing. Results of the impedance testing revealed that the subject device's impedance values were comparable to the other predicate device(s) impedance values.
Based on the aforementioned information, ProStim considers its Reusable TENS/NMES electrodes to be as safe and effective as the predicate devices, as well as multiple other TENS/NMES electrodes currently being marketed including those manufactured by: Uni-Patch(k962910), MSB Limited (K980229), Axelgaard (K983741), Selective Med components, Inc. (k946230).Medtronic, Inc. (K875284), Medical Design & Manufacturing Corp. (K895604), and Labeltape Meditect. Inc. (K900656,K902719 and K894043).
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a stylized caduceus symbol, which is a staff with two snakes entwined around it. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the caduceus symbol.
Public Health Service
DEC 2 7 2005
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Summit Manufacturing, L.L.C. c/o Ms. Susan D. Goldstein-Falk mdi Consultants, Inc. 55 Northern Blvd., Suite 200 Great Neck, New York 11021
Re: K052875
Trade/Device Name: ProStim Reusable Neurostimulation Electrodes Regulation Number: 21 CFR 882.1320 Regulation Name: Cutaneous electrode Regulatory Class: II Product Codes: GXY Dated: October 11, 2005 Received: October 12, 2005
Dear Ms. Goldstein-Falk:
We have reviewed your Section 510(k) premarket notification of intent to market the device in the device in We nave reviewed your Section 310(tr) prehistantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, enclosure) to regarly mankelou prodreate a Amendments, or to devices that have been reclassified in the ellacinent date of the Mediour Do researl Food, Drug, and Cosmetic Act (Act) that do not require accordance with the provisions of the Fouolar Food, I reg, therefore, market the device, subject to approval of a provisions of the Act. The general controls provisions of the Act include the general connels providents of any 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 If your device is classified (see above) into ense lations affecting your device can be found in the Subject to such additional controlly - Entralignation, 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 Please be advised mat 1 DA 3 issuance of a saceannal securements of the Act or any Foderal statutes and regulations administered by other Federal agencies. You must comply with all the Federal Statues and Tegulations administered of vegistration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set
CFK Fall 801), good manufacturing praction (21 CFR Part 820), and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
This letter will allow you to begin marketing your device as described in your Section 5 10(k) premarkete notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate hourication. The 112A inding of substantal equive and thus, permits your device to proceed to the market.
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Page 2 – Mrs. Susan Goldstein-Falk
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact and If you desire specific advice tor your develop on on also regulation entitled, "Mishranding by the Office of Compliance at (240) 270-0720. Also, presentation of the general information on
reference to premarket notification" (21CFR Part 807.97). Your may of any mate reference to premarket notification (21) I I Pair of Small Manufacturers, International and your responsibilities under the Act non the DIVIsion of Sharless of Collection of Coll ) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely yours,
Mark N. Melkerson
ﻖ Acting Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
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# Exhibit B
Page __ 1 __ of __ 1
510(k) Number (if known):
K052875
### Device Name: ProStim Reusable Neurostimulation Electrodes
## Indications For Use:
The ProStim Reusable Neurostimulation Electrodes are intended for use as a disposable, conductive adhesive interface between the patient's skin and the Electrical Stimulator. ProStim Reusable Neurostimulation Electrodes are designed and intended to be used with marketed Electrical Stimulators, i.e. TENS (Transcutaneous Electrical Nerve Stimulation), MENS (Microcurrent Electrical Nerve Stimulation), EMS (Electrical Muscular Stimulation), IF (Interferential) or PGF (Pulsed Galvanic Stimulation).
Prescription Use X (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)
202
(Division Sign-Off) Division of General, Rest utive, and Neurological Devices
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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.