K042785 · Nidek, Inc. · GEX · Dec 14, 2004 · General, Plastic Surgery
Device Facts
Record ID
K042785
Device Name
MULTI COLOR LASER PHOTOCOAGULATOR, MODEL MC-300
Applicant
Nidek, Inc.
Product Code
GEX · General, Plastic Surgery
Decision Date
Dec 14, 2004
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4810
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Nidek Multi Color Laser Photocoagulator Model MC-300 is indicated to be used in ophthalmic surgical procedures, including retinal and macular photocoagulation, iridotomy and trabeculoplasty.
Device Story
Diode pumped solid state laser (DPSSL) system; generates three treatment wavelengths: 532 nm (green), 561 nm (yellow), and 659 nm (red). System splits pumped laser beam into treatment and aiming beams; aiming beam color matches selected treatment wavelength. Laser energy delivered via fiber-optic cable to delivery units, including slit-lamps or binocular indirect ophthalmoscope (Keeler All Pupil II). Used by ophthalmologists in clinical settings for transpupillary photocoagulation. Protective filters in observation path shield operator from reflected laser light. Device enables precise tissue coagulation for ocular pathologies; improves patient outcomes by facilitating targeted retinal/macular treatment and glaucoma procedures.
Clinical Evidence
Bench testing only. No clinical data presented. Device safety and effectiveness established through design verification, product specifications, and risk analysis in accordance with applicable safety standards.
Technological Characteristics
Diode pumped solid state laser (DPSSL); wavelengths 532 nm, 561 nm, 659 nm. Power output 50-2000 mW; pulse width 0.02-3.00 sec; repetition rate 0.2-1.0 sec. Delivery via fiber-optic cable to slit-lamp or binocular indirect ophthalmoscope. Includes protective filters for operator safety.
Indications for Use
Indicated for patients requiring ophthalmic surgical procedures, specifically retinal and macular photocoagulation, iridotomy, and trabeculoplasty.
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
Nidek Laser Photocoagulator Model GYC-1000 (K032085)
Lumenis Novus Varia Ophthalmic Laser & Delivery Devices (K022181)
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## 510(k) SUMMARY NIDEK GREEN LASER PHOTOCOAGULATOR MODEL MC-300
DEC 1 4 2004
### SUBMITTER INFORMATION 1.
- Nidek Incorporated Company Name: A.. Company Address: 47651 Westinghouse Drive. B. Fremont, CA 94539-7474 Company Phone: C. (510) 353-7722 (510) 226-5750 Company Fax: Hiro Matsuzaki Contact Person: D. Manager, Regulatory Affairs Nidek Incorporated Date Summary Prepared: September 30, 2004 E.
#### DEVICE IDENTIFICATION 2.
| A. | Classification Name: | Ophthalmic Laser, and Powered Surgical Laser<br>Instrument |
|----|-------------------------|------------------------------------------------------------|
| B. | Trade/Proprietary Name: | Nidek Multi Color Laser Photocoagulator Model<br>MC-300 |
| C. | Device Classification: | Class II (per 21 CFR 886.4390 and 878.4810) |
| D. | Product Code: | HQF and GEX |
#### SUBSTANTIAL EQUIVALENCE 3.
The Nidek Multi Color Laser Photocoagulator Model MC-300 is of comparable type and is substantially equivalent to the following predicate devices:
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K042785 p. 2 of 4
| Predicate Device | Manufacturer | 510(k) No. | Date Cleared |
|---------------------------------------------------------------|-------------------------|------------|--------------------|
| Nidek Laser Photocoagulator<br>Model GYC-1000 | Nidek Co. Ltd.<br>Japan | K032085 | October 3,<br>2003 |
| Lumenis Novus Varia<br>Ophthalmic Laser &<br>Delivery Devices | Lumenis, Inc. | K022181 | October 1,<br>2002 |
The fundamental technical characteristics and device specifications of the Nidek Multi Color Laser Photocoagulator Model MC-300 are the same as those of the predicate devices. The Model MC-300 and the predicate devices are all Diode Laser Pumped Solid State Lasers (DPSSL). The Model MC-300 and the predicate device use a variety of delivery systems, including slit lamps, to deliver the laser beam. The Model MC-300 and the predicate devices are indicated for use in surgical treatment of ocular pathology, including retinal photocoagulation, panretinal photocoagulation, intravitreal endophotocoagulation, iridotomy, iridectomy and trabeculoplasty.
#### 4. DEVICE DESCRIPTION
The Nidek Multi Color Laser Photocoagulator Model MC-300 is a diode pumped solid state laser (DPSSL) ophthalmic photocoagulation system that produces three treatment beams: a 532 nm (green) wavelength, a 561 (yellow) wavelength, and a 659 (red) wavelength. The Model MC-300 uses the same wavelength for the aiming beam as the treatment beams, so that the operator can recognize the selected wavelength by the color of the aiming spot. The Model MC-300 splits the pumped laser beam into the aiming and treatment beams so that they can both be controlled separately. The multi-color laser beam is aligned with the respective aiming laser beam in the optical system inside the unit and gathers them in a fiber optic cable. The laser beam is led to the delivery unit via the fiber-optic cable, shaped into the specified spot size in the
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K042785 p. 3 of 4
optical system, and emitted to the affected area (the emission areas of both the therapeutic laser beam and the aiming beam are the same).
The Model MC-300 can be used to coagulate the target tissue efficiently and safely, and the system can be applied to transpupillary photocoagulation procedures using a slit-lamp.
A protective filter may be attached to each delivery unit in the observation optical path so that the operator's eye can be protected from the laser beam if it is reflected from a patient's eye or contact lens during laser emission. The Model MC-300 uses the following delivery units for use in a variety of ophthalmic procedures:
- NIDEK Slit-Lamp Delivery Unit .
- ZEISS Slit-Lamp Attachable Delivery Unit .
- Binocular Indirect Ophthalmoscope Delivery Unit (Keeler All Pupil II Type) .
#### INTENDED USE ડાં
The Nidek Multi Color Laser Photocoagulator Model MC-300 is indicated to be used in ophthalmic surgical procedures, including retinal and macular photocoagulation, iridotomy and trabeculoplasty
#### 6. TECHNOLOGICAL CHARACTERISTICS
A comparison of the technological characteristics of the Nidek Multi Color Laser Photocoagulator Model MC-300 and the predicate devices has been performed, and the results of this comparison demonstrate that the Nidek Multi Color Laser Photocoagulator Model MC-300 has the same basic technological characteristics as the predicate devices and is equivalent to the marketed predicate devices. The
09/30/04
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04
differences between the Nidek Multi Color Laser Photocoagulator Model MC-300 and the predicate devices are insignificant and do not affect the safety or effectiveness of the device.
#### PERFORMANCE DATA 7.
The Nidek Multi Color Laser Photocoagulator Model MC-300 has been designed and will be tested in accordance with applicable safety standards. System and component testing was completed based on product specifications and hazard effects determined from the risk analysis.
#### CONCLUSIONS 8.
Nidek Incorporated has demonstrated through its evaluation of the Nidek Multi Color Laser Photocoagulator Model MC-300 that the device is equivalent to the predicate device with respect to intended use, technological characteristics, and safety and effectiveness.
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Name of Manufacturer: Nidek Co., LTD
Laser Model Name and Number: Nidek Multi Color Laser Photocoagulator Model MC-300
Laser Type: (Circle all that apply) Alexandrite, Argon, CO2, Copper-Vapor(Diode) Dye, Nd: YAG, Erbium, Hol: YAG, Krypton, Ruby, KTP/532, Excimer, HENE, Accessory, Other Coumped solid state
Indications in this application: Ophthalmic surgical procedures, including retinal and macular photocoagulation, iridotomy and trabeculoplasty
FDA Document Control Number: K042785
FDA Product Codes: 79GEX, 86HQF
Reviewer Computer Initials: ABC
Date of Clearance Letter: 12/3/04
Basis of Approval: (Circle all that apply) Predicate Device (PD) Clinical Data (CD), Animal Data (AD), Specifications (SPECS), Bench Cest Data (BTD), Historical Information (HI), Other __________________________________________________________________________________________________________________________
Description of Laser: The Nidek Multi Color Laser Photocoagulator Model MC-300 is an ophthalmic photocoagulation system that uses a diode pumped solid state laser beam with wavelengths of 532 nm (green), 561 nm (yellow) and 659 nm (red) for therapeutic treatment as well as the aiming beams. The system can be used in ophthalmic surgical procedures such as retinal and macular photocoagulation, iridotomy and laser trabeculoplasty. The system can be applied to transpupillary photocoagulation procedures using two types of slit-lamp delivery units. The Binocular Indirect Ophthalmoscope (B.I.O.) Delivery Unit allows the physician to perform laser photocoagulation while observing the fundus with the indirect ophthalmoscope.
Operation Modes: (Circle all that apply) CW Pulsed, Q-Switched, Mode Locked, Contact, Free Beam, Other ________________________________________________________________________________________________________________
Wavelength in Nanometers: 532, 561 and 659
Power/Energy Range (Watts/Joules): 50-2000 mW *
Pulse Width: 0.02-3.00 sec
Repetition Rate: 0.2-1.0 sec in 0.1 sec increments
Delivery System: fiber optic
Comments: * A predicate device for the Nidek GYC-1000 (K030285) is the Nidek GYC-2000 (Model II) (K980547) with a power output of 50-2000 mW in 10 mW increments.
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/5/Picture/1 description: The image shows the logo for the Department of Health & Human Services - USA. The logo is circular, with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter of the circle. Inside the circle is an abstract symbol that resembles an eagle or a bird in flight, composed of three curved lines.
### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
DEC 1 4 2004
Nidek. Incorporated c/o Ms. Carol Patterson Patterson Consulting Group, Inc. 21911 Erie Lane Lake Forest, California 92630
Re: K042785
Trade/Device Name: Nidek Multi Color Laser Photocoagulator Model MC-300 Regulation Number: 21 CFR 878.4810, 21 CFR 886.4390 Regulation Name: Laser surgical instrument for use in general and plastic surgery and in dermatology; Ophthalmic laser Regulatory Class: II
Product Code: GEX, HQF Dated: September 30, 2004 Received: October 6, 2004
Dear Ms. Patterson:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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); 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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Page 2 - Ms. Carol Patterson
This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification 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 contact the Office of Compliance at (240) 276-0115. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer 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 yours,
Miriam C. Provost
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
| 510(k) Number: | K042785<br>(To Be Assigned By FDA) |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device Trade Name: | Nidek Multi Color Laser Photocoagulator Model MC-300 |
| Indications For Use: | The Nidek Multi Color Laser Photocoagulator Model<br>MC-300 is indicated to be used in ophthalmic surgical<br>procedures, including retinal and macular photocoagulation<br>iridotomy and trabeculoplasty. |
Prescription Use _ X (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)
Miriam C. Provost
(Division Sign-Off) Division of General, Restorative, and Neurological Devices
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**510(k) Number** K042785
09/30/04
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.