The NeuroStar TMS Therapy System is indicated for the treatment of Major Depressive Disorder in adult patients who have failed to receive satisfactory improvement from prior antidepressant medication in the current episode.
Device Story
NeuroStar TMS Therapy System is a computerized, electromechanical device for non-invasive cortical neuron stimulation. It delivers brief (185 µsec) pulsed magnetic fields to induce electrical currents in the cerebral cortex. The system comprises a mobile console with a software-controlled GUI, a gantry-supported ferromagnetic treatment coil, a laser-guided head support system for coil positioning, and a SenStar Connect consumable for contact sensing and magnetic field monitoring. Operated by trained personnel in inpatient/outpatient clinics or hospitals under physician supervision. The TrakStar system manages patient/treatment data. The device assists clinicians in treating MDD by providing targeted magnetic stimulation; benefits include non-invasive therapy for patients resistant to antidepressant medication.
Clinical Evidence
Bench testing only. Testing included 3D magnetic field mapping, pulse sequence timing, coil positioning accuracy, hardware/software unit and system testing, usability engineering, and electrical safety/EMC testing per IEC 60601-1 and IEC 60601-1-2 standards.
Technological Characteristics
Ferromagnetic iron-core treatment coil with internal cooling fan; laser-guided positioning; biphasic sinusoid pulse type; 185µs pulse width; 1-30 pps stimulation frequency. Connectivity includes TrakStar data management system. Complies with IEC 60601-1:2005 and IEC 60601-1-2:2007. Software-controlled GUI.
Indications for Use
Indicated for adult patients with Major Depressive Disorder who have failed to receive satisfactory improvement from prior antidepressant medication in the current episode.
Regulatory Classification
Identification
A repetitive transcranial magnetic stimulation system is an external device that delivers transcranial repetitive pulsed magnetic fields of sufficient magnitude to induce neural action potentials in the prefrontal cortex to treat the symptoms of major depressive disorder without inducing seizure in patients who have failed at least one antidepressant medication and are currently not on any antidepressant therapy.
Special Controls
*Classification.* Class II (special controls). The special control is FDA's “Class II Special Controls Guidance Document: Repetitive Transcranial Magnetic Stimulation System.” See § 882.1(e) for the availability of this guidance document.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 11, 2016
Neuronetics, Inc. Judy Ways, Ph.D. V.P., Regulatory Affairs and Quality Assurance 3222 Phoenixville Pike Malvern, Pennsylvania 19355
Re: K161519
Trade/Device Name: Neurostar TMS Therapy System Regulation Number: 21 CFR 882.5805 Regulation Name: Repetitive Transcranial Magnetic Stimulation System Regulatory Class: Class II Product Code: OBP Dated: August 12, 2016 Received: August 15, 2016
Dear Dr. Ways:
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. 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 requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical devicerelated 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.
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If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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
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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
William J. Heetderks -A
342 19200300 100 1 1-0010149843
for Carlos L. Peña. PhD. MS
Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K161519
Device Name NeuroStar® TMS Therapy System
#### Indications for Use (Describe)
The NeuroStar TMS Therapy System is indicated for the treatment of Major Depressive Disorder in adult patients who have failed to receive satisfactory improvement from prior antidepressant medication in the current episode.
Type of Use (Select one or both, as applicable)
| <span></span> | Prescription Use (Part 21 CFR 801 Subpart D) |
|---------------|----------------------------------------------|
| <span></span> | Over-The-Counter Use (21 CFR 801 Subpart C) |
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# NEURONETICS
#### 510(k) Summary
#### NeuroStar® TMS Therapy System
| 510(k) Owner: | Neuronetics, Inc.<br>3222 Phoenixville Pike<br>Malvern, PA 19355<br>Phone: 610-640-4202<br>Fax: 610-640-4206 |
|-------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Company Contact: | Judy P. Ways, Ph.D.<br>Vice President,<br>Regulatory Affairs and Quality Assurance<br>Neuronetics, Inc.<br>3222 Phoenixville Pike<br>Malvern, PA 19355<br>Phone: 610-981-4107<br>Fax: 610-640-4206 |
| Date Prepared: | 12 August 2016 |
| Proprietary Name: | NeuroStar® TMS Therapy System |
| Common Name: | Transcranial Magnetic Stimulator |
| Classification<br>Name: | Transcranial Magnetic Stimulator for Treatment of Major<br>Depressive Disorder [21 CFR 882.5805, Product Code OBE |
| Predicate Device: | NeuroStar TMS Therapy® System [K133408] |
#### Device Description:
The NeuroStar TMS Therapy System is a computerized, electromechanical medical device that produces and delivers non-invasive, magnetic stimulation using brief duration (185 usec nominal) rapidly alternating, or pulsed, magnetic fields to induce electrical currents directed at spatially discrete regions of the cerebral cortex. This method of cortical stimulation by application of brief magnetic pulses to the head is known as Transcranial Magnetic Stimulation or TMS. NeuroStar TMS Therapy is a non-invasive tool for the stimulation of cortical neurons for the treatment of adult patients with Major Depressive Disorder (MDD) who have failed to receive satisfactory improvement from prior antidepressant medication as described under Intended Use. The NeuroStar System
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is used for patient treatment by prescription only under the supervision of a licensed physician. It can be used in both inpatient and outpatient settings including physician's offices and clinics, and hospitals.
The NeuroStar TMS Therapy System is an integrated system consisting of a combination of hardware, software, accessories and consumable supplies. It includes a Mobile Console which houses the electronics, includes a software controlled graphical user interface, and gantry that supports the Treatment Coil. The ferromagnetic Treatment Coil delivers NeuroStar TMS Therapy®. The Head Support System provides accurate positioning of the Treatment Coil using a laser-guided alignment system. The SenStar Connect is a non-sterile, multi-use consumable which is applied to the Treatment Coil, provides contact sensing to monitor contact of the treatment coil with the patient's head throughout a treatment session, quality control by monitoring the magnetic field level prior to patient treatment and provides surface field cancellation to reduce stimulation of the scalp. The TMS TrakStar™ practice data management system consists of a standalone computer and data management software that facilitates recording and retrieval of patient and treatment information and communication of data among multiple NeuroStar TMS Systems.
#### Indication/Intended Use:
The NeuroStar TMS Therapy System is indicated for the treatment of Major Depressive Disorder in adult patients who have failed to receive satisfactory improvement from prior antidepressant medication in the current episode.
## Technological Characteristics and Substantial Equivalence:
The NeuroStar TMS Therapy System 3.0 is substantially equivalent to the predicate device (NeuroStar TMS Therapy System, K133408, K160703) for:
- Indication for Use ●
- Principles of Operation
- Design for Delivery of Transcranial Magnetic Stimulation .
- . Performance Specifications
- Materials ●
- Standards ●
The NeuroStar TMS Therapy System 3.0 modifications from the predicate device include enhanced thermal performance of the system, improved ergonomics and reliability in handling of the Treatment Coil, and an improved user work flow for the recording of treatment information to the NeuroStar software. Software password security has been enhanced in NeuroStar 3.0 and the TrakStar data management system.
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| Device Feature | NeuroStar TMS System<br>(K133408) | NeuroStar TMS Therapy<br>System 3.0 |
|--------------------------------------------------|-----------------------------------------------------------------------|-----------------------------------------------------------------------|
| Treatment Level Range | 0.22 SMT to 2.11 SMT<br>(calibrated linear output) | 0.22 SMT to 2.08 SMT<br>(calibrated linear output) |
| Induced Electric Field at 2 cm at 1.0 SMT | 135 V/m (nominal) | 135 V/m (nominal) |
| %MT Range | 80% to 140% MT | 25% to 140% MT |
| Pulses per Second Range | 1 - 30 pps for treatment<br>0.1 - 0.3 pps for MT<br>determination | 1 - 30 pps for treatment<br>0.1 - 0.3 pps for MT<br>determination |
| Stimulation Time Range<br>(Pulse Train Duration) | 1 - 600 Seconds for 1 pps<br>1 - 20 Seconds for >1 pps | 1 - 600 Seconds for 1 pps<br>1 - 20 Seconds for >1 pps |
| Inter-Train Interval Range | 0 - 600 Seconds for 1 pps<br>10 - 60 Seconds for > 1 pps | 0 - 600 Seconds for 1 pps<br>10 - 60 Seconds for > 1 pps |
| Pulse Type | Biphasic Sinusoid | Biphasic Sinusoid |
| Pulse Width | 185µS (nominal) | 185µS (nominal) |
| Pulses per Treatment Session | Maximum: 5000<br>Nominal: 3000 | Maximum: 5000<br>Nominal: 3000 |
| Coil Type | Ferromagnetic, Iron Core | Ferromagnetic, Iron Core<br>with internal cooling fan |
| Coil Positioning System | Integrated into Head Support<br>System, Laser-Aided Coil<br>Placement | Integrated into Head Support<br>System, Laser-Aided Coil<br>Placement |
| Treatment Quality Features | Magnetic Field Level<br>Detection<br>Coil Contact Sensing | Magnetic Field Level<br>Detection<br>Coil Contact Sensing |
#### Table 1 Performance Specifications for NeuroStar System 3.0 and Predicate Device
## Bench Performance Testing:
The following performance tests were conducted to demonstrate the substantial equivalence of NeuroStar 3.0 to the predicate NeuroStar TMS Therapy System.
- . Magnetic field mapping in 3-dimensions, spatial and temporal characteristics, and pulse sequence timing
- Coil positioning accuracy for MT, MT level and treatment location ●
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The following additional tests were conducted to demonstrate that NeuroStar 3.0 meets performance specifications.
- NeuroStar system hardware and software unit, system and user story testing
- Usability engineering testing
- Electrical safety testing to IEC 60601-1:2005 and Electromechanical ● Compatibility (EMC) testing to IEC 60601-1-2:2007, Third Edition
Verification and validation testing demonstrated that the changes to NeuroStar 3.0 do not substantially modify the performance of the device. Therefore, differences in specifications, design, materials and manufacturing process for the NeuroStar TMS System 3.0 do not raise new questions of safety and effectiveness of the device for its indicated use. Labeling changes for NeuroStar 3.0 reflect the device changes and the labeling is otherwise the same as for the predicate device, NeuroStar TMS Therapy System (K133408/K160703).
The NeuroStar TMS Therapy System 3.0 complies with the requirements for TMS systems as defined in the FDA's "Class II Special Controls Guidance Document for Repetitive Transcranial Magnetic Stimulation (rTMS) System", dated 26 July 2011. It complies with the same medical device performance standards applied to the commercial NeuroStar System.
Based on this information, the NeuroStar TMS Therapy System 3.0 is substantially equivalent to the predicate device, NeuroStar TMS Therapy System cleared by the FDA under K133408 and K160713.
'The NeuroStar ® and NeuroStar TMS Therapy® are registered trademarks of TMS Therapy™ and NeuroStar TrakStar™ are trademarks of Neuronetics. Inc. Neuronetics, 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.