K141861 · Jeisys Medical, Inc. · ILY · Jan 7, 2015 · Physical Medicine
Device Facts
Record ID
K141861
Device Name
HILTHERA 4.0
Applicant
Jeisys Medical, Inc.
Product Code
ILY · Physical Medicine
Decision Date
Jan 7, 2015
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.5500
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
To provide topical heating for the purpose of elevating tissue temperature for temporary relief of muscle and joint pain and stiffness, arthritis pain or muscle spasm, the temporary increase in local blood circulation and/or promoting relaxation of muscle.
Device Story
Hilthera 4.0 is an ND:YAG laser system providing topical heating for pain relief and muscle relaxation. Device consists of a main control unit with a display and a contact handpiece connected via a 1000 um fiber optic cable. Operator programs therapy parameters via the control unit interface; system delivers pulsed 1064nm laser energy to target tissue. Aiming beam (655nm diode) assists in positioning. Used in clinical settings by trained operators. Output is thermal energy; clinical benefit is temporary relief of musculoskeletal pain and stiffness through increased local circulation and muscle relaxation.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench testing, including software verification and validation, and electrical safety and electromagnetic compatibility (EMC) testing.
Technological Characteristics
ND:YAG laser system; 1064nm wavelength; pulsed mode (100-150us pulse width, 10-30 Hz repetition rate); 10W max power; 0.15-1.2 J/cm2 fluence; 5mm spot size; 1000 um fiber optic delivery; 655nm diode aiming beam. Power: 230 VAC, 50/60 Hz. Dimensions: 40cm x 92.1cm x 128.2cm; Weight: 80kg. Complies with electrical safety and EMC standards.
Indications for Use
Indicated for patients requiring topical heating for temporary relief of muscle and joint pain, stiffness, arthritis pain, muscle spasm, increased local blood circulation, and muscle relaxation.
Regulatory Classification
Identification
An infrared lamp is a device intended for medical purposes that emits energy at infrared frequencies (approximately 700 nanometers to 50,000 nanometers) to provide topical heating.
Special Controls
*Classification.* Class II (special controls). The device, when it is an infrared therapeutic heating lamp, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 890.9.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
January 7, 2015
Jeisys Medical Incorporated % Ms. Priscilla Chung LK Consulting Group USA Incorporated 2651 East Chapman Avenue, Suite 110 Fullerton, California 92831
Re: K141861
Trade/Device Name: Hilthera 4.0 Therapeutical Laser System Regulation Number: 21 CFR 890.5500 Regulation Name: Infrared Lamp Regulatory Class: Class II Product Code: ILY Dated: July 3, 2014 Received: July 10, 2014
Dear Ms. Chung:
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
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device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please 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/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of 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,
# David Krause -S
Binita S. Ashar, M.D., M.B.A., F.A.C.S. for Director Division of Surgical Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K141861
Device Name
Hilthera 4.0 Therapeutical Laser System
#### Indications for Use (Describe)
To provide topical heating for the purpose of elevating tissue temperary relief of muscle and joint pain and stiffness, arthritis pain, or muscle spasm, the temporary increase in local blood circulation and/or promoting relaxation of muscle.
Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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#### FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
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# 510(k) Summary
# 1. Submission Sponsor
Jeisys Medical, Inc. 307 Daeryung Techno Town 8th Gamasan-ro 96, Geumcheon-Gu, Seoul 153-775 Korea Phone: (82) 2.2603.6417 Fax: (82) 2.2603.6447 Contact: kyung won- Hwang, RA Manager
# 2. Submission Correspondent
Priscilla Chung LK Consulting Group USA Inc. 2651 E Chapman Ave Ste 110, Fullerton CA 92831 Email: juhee.c@lkconsultinggroup.com
#### 3. Date Prepared
November 18th, 2014
# 4. Device Identification
Trade/Proprietary Name: Hilthera 4.0 Therapeutical Laser System Common/Usual Name: ND:YAG Laser Classification Regulation: 890.5500 ILY Product Code: Device Class: Class II Classification Panel: Infrared Lamp
#### 5. Predicate Devices
El En SpA – El En HILT Family Laser, K051537
# 6. Device Description
#### - Device Specification
A complete device specification is included in attachment 11 and in the Operator's Manual located in attachment 13 of this submission.
# - Labeling / instructions for use
Complete labeling is located in attachment 13
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#### - Use principles
Use principles are provided in the Device Description located in attachment 13
## 7. Intended Use
To provide topical heating for the purpose of elevating tissue temperature for temporary relief of muscle and joint pain and stiffness, arthritis pain or muscle spasm, the temporary increase in local blood circulation and/or promoting relaxation of muscle.
#### 8. Comparison of Technological Characteristics
The Hilthera 4.0 device shares the same or similar indications for use, device operation, overall technical and functional capabilities, and therefore is substantially equivalent to the predicate devices. The Hilthera 4.0 device is similar in design and function to the predicate devices for the modes of operation and use.
The devices have a control unit that can be programmed utilized for the patient parameters. In addition, they are equipped with manual interface, enabling to operate the device during therapy, and a display, which shows the set and indicated parameters. During operation the devices have an applicator instrument attached to the main unit.
## 9. Substantial Equivalence Discussion
The following table compares the Hilthera 4.0 device to the predicate devices with respect to intended use, technological characteristics and principles of operation, providing more detailed information regarding the basis for the determination of substantial equivalence.
| Manufacturer | El En SpA | Jeisys Medical, Inc. |
|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade Name | Predicate<br>HILT Family Laser | New Device<br>Hilthera 4.0 |
| 510(k) Number | K051537 | Not assigned |
| Intended Use | To provide topical heating for<br>the purpose of elevating tissue<br>temperature for temporary relief<br>of muscle & joint pain &<br>stiffness, arthritis pain or muscle<br>spasm; the temporary increase in<br>local blood circulation and/or<br>promoting relaxation of muscle. | To provide topical heating for<br>the purpose of elevating tissue<br>temperature for temporary relief<br>of muscle & joint pain &<br>stiffness, arthritis pain or muscle<br>spasm; the temporary increase<br>in local blood circulation and/or<br>promoting relaxation of muscle. |
| Energy Source | ND:YAG laser | ND:YAG laser |
| Laser mode | Pulsed(PW) | Pulsed(PW) |
Table 5A - Comparison of Characteristics
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| Manufacturer | El En SpA | Jeisys Medical, Inc. |
|-----------------------|-----------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------|
| Trade Name | Predicate<br>HILT Family Laser | New Device<br>Hilthera 4.0 |
| Wave length | 1064nm | 1064nm |
| Power Source | 230 VAC, 15A, 50/60 Hz | 230 VAC, 50/60 Hz |
| Power/Energy<br>Range | Maximum 10W | Maximum 10W |
| Fluence | 0.15~0.45 J/cm2 | 0.15~1.2 J/cm2 |
| Pulse width | 60-150us | 100-150us |
| Repetition rate | 10-40 Hz | 10-30 Hz |
| Spot size | Ø 5mm<br>0.2 cm2 | Ø 5mm<br>0.2 cm2 |
| Delivery System | Contact and Non-contact hand pieces connected to the system via a 600 um diameter fiber optic cable | Contact hand pieces connected to the system via a 1000 um diameter fiber optic cable |
| Aiming Beam | Diode 655nm (Red) 1mW | Diode 655nm (Red) 1mW |
| Weight | 40 kG | 80 kG |
| Dimensions | 30 cm x 70 cm x 78 cm | 40 cm x 92.1 cm x 128.2 cm |
# 10. Non-Clinical Performance Data
The device's hardware and software development, verification, and validation have been carried out in accordance with FDA guidelines. The software was tested against the established Software Design Specifications for each of the test plans to assure the device performs as intended. The Device Hazard analysis was completed and risk control implemented to mitigate identified hazards. The testing result supports that all the hardware specifications and software specifications have met the acceptance criteria of each module and interaction of processes. The Hilthera 4.0 device passed all testing and supports the claims of substantial equivalence and safe operation.
The Hilthera 4.0 device complies with the applicable voluntary standards for Electromagnetic Compatibility and Safety. The device passed all the electrical and safety testing according to national and international standards.
#### 11. Clinical Testing
There was no clinical testing required to support the medical device as the indications for use is equivalent to the predicate devices. The verification and validation testing of the device software and electrical safety and EMC testing of the device was found to acceptable and supports the claims of substantial equivalence.
#### 12. Statement of Substantial Equivalence
It has been shown in this 510(k) submission that the difference between the Hilthera 4.0
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device and the predicate device do not raise any questions regarding its safety and effectiveness. The Hilthera 4.0 device, as designed and manufactured, is determined to be substantially equivalent to the referenced predicate device.
# 13. Conclusion
The Hilthera 4.0 device has similar intended use and technological characteristics as the predicate devices.
The information provided in this submission supports the substantial equivalence to the predicate device and that the system is safe and effective for the users/operators.
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.