K170187 · Uvbiotek, LLC · GEX · Jul 28, 2017 · General, Plastic Surgery
Device Facts
Record ID
K170187
Device Name
Photodynamic Therapy Device
Applicant
Uvbiotek, LLC
Product Code
GEX · General, Plastic Surgery
Decision Date
Jul 28, 2017
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4810
Device Class
Class 2
Attributes
Therapeutic, Real-World Evidence
Real-World Evidence
Submission
Device
Sponsor
RWD Sources
RWE Use Summary
Key Tags
K170187 · Jul 28, 2017
Photodynamic Therapy Device
Uvbiotek, LLC
Human volunteer thermal performance testing
Thermal performance testing was conducted on human volunteers to verify that the device maintains skin temperature below 41 degrees Celsius during operation.
Thermal safety; Human volunteer testing
Clinical Evidence
Study Design
Population
Comparator
Key Endpoints
Thermal performance test; Human volunteer testing; Follow-up/Duration: 20 minutes
Human volunteers
Not applicable for this study
Skin temperature maintenance (below 41 degrees C)
Indications for Use
The Photodynamic Therapy Device combination of Red (633nm=10mm) and Blue (417nm=10mm) is intended to emit energy in the red, blue regions of the spectrum to treat dermatological conditions, specifically indicated to treat mild to moderate acne vulgaris.
Device Story
The Photodynamic Therapy Device (KN-7000A) is a portable LED-based phototherapy system used in clinical settings to treat mild to moderate acne vulgaris. The device consists of a main frame, an irradiator, and a lifting stand. It emits red (633nm) and blue (417nm) light to the patient's skin. Operators (clinicians) set treatment parameters via a display screen interface. Patients must remove cosmetics, wash their face, and wear protective eyewear during the procedure. The irradiator is positioned 6cm from the treatment area. Treatment protocols involve alternating red and blue light irradiation for specified durations (13-30 minutes depending on the head type), twice weekly for 8 sessions. The device uses microprocessor control to manage light output. By delivering specific light energy, the device aims to reduce the appearance of acne, providing a non-invasive therapeutic option for dermatological management.
Clinical Evidence
Bench testing only. Compliance with AAMI/ANSI ES60601-1, IEC60601-1-2, and IEC60601-2-57 standards. Thermal performance testing on human volunteers confirmed skin temperature remains below 41°C after 20 minutes of use. Software verification performed per FDA guidance.
Technological Characteristics
Portable LED-based light therapy device. Emits red (633±10nm) and blue (417±10nm) light. Microprocessor-controlled. Operates at 100-240V, 50/60Hz. Effective irradiance area 800cm². Non-sterile. Standards: IEC60601-1, IEC60601-1-2, IEC60601-2-57.
Indications for Use
Indicated for patients with mild to moderate acne vulgaris.
Regulatory Classification
Identification
(1) A carbon dioxide laser for use in general surgery and in dermatology is a laser device intended to cut, destroy, or remove tissue by light energy emitted by carbon dioxide.(2) An argon laser for use in dermatology is a laser device intended to destroy or coagulate tissue by light energy emitted by argon.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged in a circular fashion around a symbol. The symbol is a stylized representation of three human profiles facing right, with a wing-like shape extending from the first profile.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
July 28, 2017
UVBIOTEK, LLC Zhou Jinghua Guangzhou Junyi Information Technology Co, Ltd. Room 215, Huaming Building, Chebei Road Guangzhou, Guangdong, China 511660
Re: K170187
Trade/Device Name: Photodynamic Therapy Device Regulation Number: 21 CFR 878.4810 Regulation Name: Laser surgical instrument for use in general and plastic surgery and in dermatology Regulatory Class: Class II Product Code: GEX Dated: July 3, 2017 Received: July 3, 2017
Dear Zhou Jinghua:
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, Jennifer R. Stevenson -S3
For Binita S. Ashar, M.D., M.B.A., F.A.C.S. Director Division of Surgical Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
### Indications for Use
510(k) Number (if known) K170187
Device Name Photodynamic Therapy Device
Indications for Use (Describe)
The Photodynamic Therapy Device combination of Red (633nm=10mm) and Blue (417nm=10mm) is intended to emit energy in the red, blue regions of the spectrum to treat dermatological conditions, specifically indicated to treat mild to moderate acne vulgaris.
Type of Use (Select one or both, as applicable)
× Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
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## Section 5 - 510(k) Summary
Date of Summary Preparation: July 14/2017
#### 1. Submitter's Identifications
Submitter's Name: UVBIOTEK, LLC Address: 3 Depot Street, Hudson Falls, NY 12839, United States Contact Person: Dave Oberhelman Contact Title: Plant Manager Contact E-mail Address: DOberhelman@medteklighting.com Telephone: 518-747-3310 Fax: 518-747-2294
#### 2. Correspondent's Identifications
Correspondent's Name: Guangzhou Junyi Information Technology Co., Ltd. Address: Room 215, Huaming Building, Chebei Road, Guangzhou, P.R. China ZIP Code: 511660 Contact Person: Zhou Jinghua Contact Title: Regulation Control Manager Contact E-mail Address: kernel 2016@126.com Telephone: +86-20-82329549 Fax: +86-20-82329549
#### 3. Name of the Device
Device Classification Name: Powered Laser Surgical Instrument Product Name: Laser Surgical Instrument for Use in General and Plastic Surgery and in Dermatology Trade Name: Photodynamic Therapy Device Model: KN-7000A Classification Panel: General & Plastic Surgery Product Code: GEX Device Classification: Class II
#### 4. The Predicate Devices
K083183 Aklarus Phototherapy System
#### 5. Device Description
The Photodynamic Therapy Device KN-7000A is a portable device which uses specific wavelengths of light, produced by light emitting diodes (LEDs), to manage aesthetic conditions. The device produces light in the red light region of the light spectrum (633±10mm) and/or in the
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blue light region of the light spectrum (417±10nm), intended to help reduce the appearance of mild to moderate acne. There are three irradiators available, Blue LED, Red LED and Blue/Red LED.
This device is mainly made up of the main frame, the irradiator, and the lifting stand.
After installing the KN-7000A Photodynamic Therapy Device, the phototherapy patient should be instructed to remove cosmetics, wash their face with water and wipe it dry before therapy. The special protective eyewear should be used to cover both eyes to prevent possible injury by the irradiator. Set treatment parameters on the main interface of the screen, operate the irradiator and make sure that the correct operating distance (6cm±1cm) from the patient's treatment area.
When using pure red, pure blue treatment head alternate irradiation, pure red LEDs irradiates 15 minutes per treatment, pure blue LEDs irradiates 13 minutes per treatment, twice weekly, 8 times per course of treatment; When using red and blue combination treatment head alternate irradiation, red LEDs irradiates 30 minutes per treatment, blue LEDs irradiates 22 minutes per treatment, twice weekly, 8 times per course of treatment.
#### 6. Intended Use of Device
7. Summary of Substantial Equivalence
The Photodynamic Therapy Device combination of Red (633nm±10nm) and Blue (417nm±10nm) is intended to emit energy in the red, blue regions of the spectrum to treat dermatological conditions, specifically indicated to treat mild to moderate acne vulgaris.
| | Proposed Device | Predicate device | Comparison |
|-------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510k Number | K170187 | K083183 | ----- |
| Product Code | GEX | ILY GEX | Same |
| Proprietary<br>Name | Photodynamic Therapy<br>Device | Aklarus Phototherapy<br>System | ----- |
| Model | KN-7000A | Aklarus Phototherapy<br>System | ----- |
| Manufacturer | Xuzhou Kernel Medical<br>Equipment Co., Ltd. | Hill Laboratories | ----- |
| Indications for<br>use | The Photodynamic Therapy<br>Device combination of Red<br>(633nm $\pm$ 10nm) and Blue<br>(417nm $\pm$ 10nm) is intended<br>to emit energy in the red,<br>blue regions of the<br>spectrum to treat<br>dermatological conditions,<br>specifically indicated to<br>treat mild to moderate acne<br>vulgaris. | The Aklarus Blue (420nm<br>$\pm$ 10nm), is generally<br>indicated to treat<br>dermatological conditions<br>and specifically indicated<br>to treat moderate<br>inflammatory acne<br>vulgaris.<br>The Aklarus combination<br>of Red (628nm $\pm$ 10nm)<br>and Blue (420nm $\pm$ 10nm) | Same. The<br>indications for<br>use of<br>KN-7000A are<br>contained in<br>those of the<br>predicate<br>device. |
| | | | |
| | | is intended to emit energy<br>in the red, blue regions of | |
| | | the spectrum to to to treat | |
| | | dermatological conditions, | |
| | | | |
| | | specifically indicated to | |
| | | treat mild to moderate acne | |
| | | vulgaris. | |
| | | The Aklarus Anti-Aging | |
| | | Red (628nm +/-10nm) and | |
| | | Anti-Aging | |
| | | (880nm+/-10nm) | |
| | | Combination is intended to | |
| | | emit energy in the red and | |
| | | infra-red region of the | |
| | | spectrum for for use in | |
| | | dermatology | |
| | | treatment of of periorbital | |
| | | wrinkles. | |
| | | The | |
| | | (880nm | |
| | | intended to emit energy in | |
| | | the IR spectrum to provide | |
| | | topical heating for the | |
| | | purpose of elevating tissue | |
| | | temperature;<br>the | |
| | | temporary relief of minor | |
| | | muscle and joint pain, | |
| | | | |
| | | arthritis and muscle spasm; | |
| | | relieving | |
| | | promoting the relaxation of | |
| | | muscle tissue;<br>and<br>to | |
| | | temporarily increase local | |
| | | blood circulation where | |
| | | applied. | |
| Structural | Portable | Portable | Same |
| configuration | | | |
| Components | frame,<br>irradiator,<br>Main | Main<br>frame,<br>irradiator, | Same |
| | lifting stand | lifting stand | |
| | | | Similar. |
| Wavelength | | Red 628nm±10nm | Wavelength<br>of |
| | Red light 633±10nm | Blue 420nm±10nm | red<br>and<br>blue |
| | Blue light 417±10nm | Infrared 880nm±10nm | light<br>between |
| | | | KN-7000A and |
| | | | the<br>predicate |
| | | | |
| Power Supply | 100-240V, 50/60Hz±2%, 300VA | 110-120V, 60Hz, 150VA | Similar.<br>The voltage range of KN-7000A is wider than that of the predicate device. |
| Recommended<br>method of<br>therapy | When using pure red, pure blue treatment head alternate irradiation, pure red LEDs irradiates 15 minutes per treatment, pure blue LEDs irradiates 13 minutes per treatment, twice weekly, 8 times per course of treatment; When using red and blue combination treatment head alternate irradiation, red LEDs irradiates 30 minutes per treatment, blue LEDs irradiates 22 minutes per treatment, twice weekly, 8 times per course of treatment. | Twice weekly, 20 minutes per treatment | Similar.<br>Recommended method of therapy of KN-7000A is more specific than that of the predicate device.<br>The time of treatment is related to the irradiance dose, because the irradiance dose of red light and blue light of KN-7000A are same to the predicate device, the difference do not affect the effectiveness and safety. |
| Effective<br>irradiance | Red light 633±10nm<br>Blue light 417±10nm<br>(1)Red head:<br>60mW/cm²±10mW/cm²<br>52J/cm²<br>48W | (1)Red 628nm<br>20W +/- 3W<br>Standard dose 52J/cm²<br>43mW/cm²<br>(2)Blue 420nm<br>10W+/-3W<br>Standard dose 26J/ cm² | Similar.<br>The wavelength of red light and blue light of KN-7000A are slightly different form those of |
| | | | |
| | (2)Blue head:<br>$35mW/cm^2 \pm 10mW/cm^2$<br>$26J/cm^2$<br>28W | 22 mW/cm²<br>(3)Infrared 880nm<br>16W +/- 3W<br>Standard dose 42 J/cm²<br>35mW/cm² | the predicate device.<br>The irradiance dose of red light and blue light of KN-7000A are same to the predicate device, so those differences do not affect the effectiveness and safety. |
| | (3)Red/Blue head:<br>●Red LEDs<br>$30mW/cm^2 \pm 10mW/cm^2$<br>$52J/cm^2$<br>24W<br>●Blue LEDs<br>$20mW/cm^2 \pm 10mW/cm^2$<br>$26J/cm^2$<br>16W | | Similar.<br>The effective irradiance area of KN-7000A is larger than that of the predicate device. The effective irradiance area is related to the size of the treatment head, which does not affect the effectiveness and safety. |
| Effective<br>irradiance area | $800cm^2 \pm 10%$ | $465cm^2 \pm 10%$ | |
| Working<br>distance | 6cm±1cm | 1cm | Same |
| Operation<br>interface | Display screen | Display screen | Same |
| Safety<br>Classification | Class I | Class I | Same |
| Operation<br>Mode | Continuous operation | Continuous operation…
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.