K041943 · Photo Medex, Inc. · GEX · Oct 14, 2004 · General, Plastic Surgery
Device Facts
Record ID
K041943
Device Name
XTRAC XL, MODEL AL8000
Applicant
Photo Medex, Inc.
Product Code
GEX · General, Plastic Surgery
Decision Date
Oct 14, 2004
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4810
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The intended use is targeted UVB phototherapy for treatment of the skin conditions including psoriasis, vitiligo, atopic dermatitis, and leukoderma.
Device Story
XTRAC XL2 Excimer Laser System (Model AL8000) is a self-contained, compact UVB laser light source. It utilizes a XeCl gas mixture to generate monochromatic 308nm UVB light. System components include a touch-screen display, fiberoptic cable, handpiece, and foot-switch. Operated by clinicians in a clinical setting, the device delivers an operator-selected dose of targeted ultraviolet light to skin lesions. The laser is housed in a protective interlocked enclosure and powered by standard AC wall outlets. By delivering precise, dose-controlled phototherapy, the device assists in the treatment of specific dermatological conditions, offering improved ergonomics and reduced maintenance compared to previous models.
Clinical Evidence
No clinical data provided. The manufacturer states that the device performs in an identical manner to previously cleared predicate devices and that duplicative clinical data is not required.
Technological Characteristics
XeCl excimer laser source; monochromatic 308nm UVB output; fiberoptic delivery with handpiece; touch-screen interface; AC power; interlocked protective housing. Complies with EN 60601 series, UL 2601-1/UL60601-1, and 21 CFR 1040.10/1040.11. Risk management per EN ISO 14971.
Indications for Use
Indicated for targeted UVB phototherapy in patients with psoriasis, vitiligo, atopic dermatitis, and leukoderma.
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.
Predicate Devices
Excimer Laser Phototherapy System, model AL7000, AccuLase (K992914)
XTRAC Excimer Laser System, Model AL7000 (K003705)
XTRAC Excimer Laser System, Model AL7000 (K011382)
XTRAC Excimer Laser System, Model AL7000 (K020847)
XTRAC XL Plus Excimer Laser System, Model AL7000 (K031451)
Submission Summary (Full Text)
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K041943
## 510(k) SUMMARY PhotoMedex, Inc. XTRAC XL2 Excimer Laser System, Model AL8000
#### 1. GENERAL
| • Submitter: | PhotoMedex, Inc.<br>2431 Impala Drive<br>Carlsbad, CA 92008 |
|--------------|-------------------------------------------------------------|
|--------------|-------------------------------------------------------------|
- Bob Rose ● Contact Person:
- July 16, 2004 Date Prepared: .
## 2. DEVICE NAME
- Laser surgical instrument for use in general and plastic Classification name: . surgery and in dermatology (21 CFR §878.4810)
- Common or usual name: XeCl excimer laser .
- Trade or proprietary name: XTRAC XL2 Excimer Laser System, Model AL8000 .
## 3. PREDICATE DEVICES
#### Excimer Laser
- Excimer Laser Phototherapy System, model AL7000, AccuLase . (PhotoMedex), cleared via 510(k) K992914
- XTRAC Excimer Laser System. Model AL7000, PhotoMedex, Inc., cleared . via 510(k) K003705
- XTRAC Excimer Laser System. Model AL7000, PhotoMedex, Inc., cleared . via 510(k) K011382
- XTRAC Excimer Laser System. Model AL7000, PhotoMedex, Inc., cleared . via 510(k) K020847
- XTRAC XL Plus Excimer Laser System. Model AL7000, PhotoMedex, Inc. . cleared via 510(k) K031451
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## 4. DEVICE DESCRIPTION
The XTRAC XL2 Excimer Laser System Model AL8000 is a complete self-contained compact UVB laser light source, which utilizes a XeCl gas mixture to generate an operator selected dose and target-specific ultraviolet light at monochromatic operater services ann. The laser system consists of a touch-screen display, an advanced fiberoptic cable attached to a handpiece, and a foot-switch to initiate exposure. The laser is enclosed in a protective interlocked housing. The unit is designed to operate on standard AC power available from wall outlets and can accommodate US, European and other nominal supply voltages and operating frequencies.
#### 5. INTENDED USE
The intended use is targeted UVB phototherapy for treatment of the skin conditions including psoriasis, vitiligo, atopic dermatitis, and leukoderma.
## 6. SUBSTANTIAL EQUIVALENCE
The application of the Excimer Laser phototherapy has been proven to be substantially equivalent to current legally marketed devices in the treatment of indications previously cleared by CDRH (ODE). PhotoMedex has been granted mercently provised 1 1 K003705, K011382, K020847, and K031451 for this method of phototherapy generation.
The intended use for the PhotoMedex XTRAC XL2 Excimer Laser System, Model AL8000, and the identified predicate devices are identical in that they are all excimer lasers used to produce monochromatic (308nm) UVB light for the purpose of targeted, dose controlled UVB (dermatological) phototherapy. The differences between the XTRAC XL2 Excimer Laser System Model AL8000, and the identified predicates are limited to a reduction in product size and weight, improved ergonomics for the user, enhanced operating parameters, and additional minor internal improvements to reduce (required) maintenance costs. We believe the inclusion of these features does not affect the device's safety or intended use as compared to the identified predicates.
## 7. CLINICAL PERFORMANCE TESTING
All clinical indications requested in this application have been previously cleared in the identified predicate devices. The XTRAC XL2 Excimer Laser System Model AL8000 does not introduce any new indications for use, and will perform in an identical manner as the identified predicates, therefore PhotoMedex believes duplicative clinical data is not required as a condition of granting market clearance for the XTRAC XL2 Excimer Laser System Model AL8000.
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## 8. PRODUCT PERFORMANCE TESTING
Testing and certification relevant to the XTRAC XL² Excimer Laser System Model I coung and certificance to current applicable international EN 60601 series of standards, 21 CFR Part 1040.10 & 1040.11 Performance Standards for Light-Emitting Products and also includes UL 2601-1/UL60601-1 Medical Electrical Equipment classified device. Products are produced and distributed within a facility that has been registered by FDA to manufacture medical devices. The XTRAC XL2 Excimer Laser System Model AL8000 also is reviewed for risk management utilizing EN ISO 1497, Application of risk management to medical devices ensuring all aspects of the device are reviewed for potential hazards.
#### 9. CONCLUSIONS
PhotoMedex believes the XTRAC XL² Excimer Laser System Model AL8000 is substantially equivalent to the identified predicates in that it does not introduce any new issues of safety or efficiency as compared to the predicates. The Indications for use, methods of operation and power source is identical to the predicate.
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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an abstract symbol that resembles an eagle or a stylized human figure with outstretched arms. The symbol is composed of three curved lines that create a sense of movement and dynamism.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
OCT 1 4 2004
Mr. Bob Rose Director of Regulatory Affairs and Quality Assurance PhotoMedex, Inc. 2431 Impala Drive Carlsbad, California 92008
Re: K041943
K041743
Trade/Device Name: XTRAC XL2 Excimer Laser System Model AL8000 Regulation Number: 21 CFR 878.4810 Regulation Name: Laser surgical instrument for use in general and plastic surgery and in dermatology Regulatory Class: II Product Code: GEX Dated: July 16, 2004
Dear Mr. Rose:
Received: July 19, 2004
We have reviewed your Section 510(k) premarket notification of intent to market the device we nave reviewed your bection of the device is substantially equivalent (for the indications ferenced above and have acterimed ally marketed predicate devices marketed in interstate for use stated in the encreate) (c 10gars) the enactment date of the Medical Device Amendments, or to comments prior to May 20, 1976, the excordance with the provisions of the Federal Food, Drug, devices that have been recuire approval of a premarket approval application (PMA). alla Costience Act (110) that do november to the general controls provisions of the Act. The 1 ou may, merciole, market the do received, courements for annual registration, listing of general controls provisions of viactice, 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 If your device is classified (600 world). Existing major regulations affecting your device can thay be subject to such additions, 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 I Toast oc advised that I Dr o restion that your device complies with other requirements of the Act that I DA has made a determinations administered by other Federal agencies. You must or any I caetar statutes and equirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set OF N Fart 877), Morellans (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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Page 2 - Mr. Bob Rose
This letter will allow you to begin marketing your device as described in your Section 5 10(k) I his letter will anow you to begin marketing your aceries of your device to a legally premarket notification. The PDA midning of castification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please If you desire specific acritorior your as (240) 276-0115. Also, please note the regulation entitled, a conlact the Office of Complance at (21 t m = (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small other gelleral information on your response Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely vours,
Mark N. Milliken
Celia M. Witten, Ph.D., M.D. Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
K 041943 510(k) Number (if known):
XTRAC XL² Excimer Laser System Model AL8000 Device Name:
Indications For Use:
UVB Phototherapy for psoriasis, vitiligo, atopic dermatitis, and leukoderma
Mahh N. Millerm
Division of General, Restorative, and Neurological Devices
**510(k) Number** K041943
Prescription Use (Part 21 CFR 801 Subpart D) AND/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)
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.