K991628 · Esc Medical Systems, Inc. · GEX · Aug 9, 1999 · General, Plastic Surgery
Device Facts
Record ID
K991628
Device Name
MODIFIED LX-20 CO2 LASER SYSTEM FAMILY, LX-20SA
Applicant
Esc Medical Systems, Inc.
Product Code
GEX · General, Plastic Surgery
Decision Date
Aug 9, 1999
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4810
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The modified LX-20 Laser System Family is a general surgical instrument used to vaporize, incise, excise, ablate, or photo coagulate soft tissue in surgical procedures in the listed surgical specialties. The system may be effectively utilized for those applications recognized as within the accepted indications for use of C0, laser devices performed within the listed specialties and which require power densities as calculated by power and spot size referenced in the power density charts in the operator's manual.
Device Story
The Luxar modified LX-20 is a CO2 surgical laser system emitting 10.6-micron infrared energy. It utilizes an RF-excited lasing tube to generate laser energy, which is delivered to soft tissue via a knuckled beam delivery assembly, articulated arm, or hollow fiber waveguide, terminating in sterile handpieces or tips. Operated by physicians in clinical or surgical settings, the device allows for precise tissue interaction—vaporization, incision, excision, ablation, or photocoagulation. The modified version incorporates an additional articulated arm from the Sharplan 20C laser to expand accessory compatibility. The healthcare provider controls the laser output to perform procedures across multiple specialties, including gynecology, dermatology, and ENT. The device benefits patients by providing a versatile, minimally invasive tool for soft tissue surgery, reducing the need for traditional scalpel-based interventions.
Clinical Evidence
No clinical data were presented. Substantial equivalence is based on technological similarities and identical intended use to the predicate devices.
Technological Characteristics
CO2 laser system; 10.6-micron wavelength; RF-excited lasing tube; articulated arm and hollow fiber waveguide delivery; microprocessor-controlled; 4 console configurations (LX-20SI, LX-20SP, LX-20LP, LX-20SA).
Indications for Use
Indicated for soft tissue vaporization, incision, excision, ablation, or photocoagulation in gynecology, laparoscopy, dermatology, dental/oral surgery, orthopedics, general surgery, otorhinolaryngology, and podiatry. Applicable to a broad range of surgical procedures including tumor/lesion removal, cyst treatment, and various ablative dermatological and ENT procedures.
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
Luxar LX-20 C0, Surgical Laser System Family (K960475)
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AUG - 9 1999
991628
# 13.0 510(K) SUMMARY
# Page 1 of 2
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990.
- Submitter's name, address, telephone, fax, & contact person 1.
ESC Medical Systems Yokneam Industrial Park, PO Box 240, Yokneam 20692, Israel Phone: 972-4-959-9000 Fax: 972-4-959-9050 Zvi Ladin, Vice President Clinical Applications and Regulatory Affairs
- Date summary prepared: 2. January 15, 1999
- Product trade or proprietary name: 3. Luxar modified LX-20 C0, Surgical Laser System
- 4. Product common name: C0, Laser
#### న్. Product classification name
21C.F.R. § 878.4810 Laser surgical instrument for use in general and plastic surgery and in dermatology
21C.F.R. § 874.4500 Ear, nose and throat microsurgical carbon dioxide laser
21C.F.R. § 884.4550 Gynecologic surgical laser
- Legally marketed predicate device used for equivalency: 6.
Luxar LX-20 C0, Surgical Laser System Family (K960475) and Sharplan 20C C02 Laser (K963229 and K935563).
- 7. Description:
The Luxar modified LX-20 Surgical Laser System produces laser (infrared) energy at a wavelength of 10.6 microns which is directed to soft tissue through a knuckled beam delivery assembly, articulated arm or articulated arm plus hollow fiber waveguide, handpieces, and sterile delivery tips.
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#### Statement of intended use: 8.
The intended use of the modified LX-20 is identical to that of the LX-20 Laser System Family and the predicate Sharplan 20C, namely the vaporization, incision, excision, ablation, or photocoagulation of soft tissue in the listed surgical specialties of:
- · Gynecology
- · Laparoscopic Surgery Including GYN Laparoscopy
- · Dermatology
- · Dental and Oral surgery
- · Orthopedic
- · General Surgery
- Otorhinolaryngology
- · Podiatry
The Modified LX-20 Laser has harmonized indications for use that are identical to the cleared LX-20 Laser System Family combined with the equivalent Sharplan 20C laser. There are no new indications for use beyond those cleared for the predicate devices, and no clinical data were presented.
#### 9. Technological characteristics:
Basic system operation and performance are unchanged from the cleared LX-20 Laser System Family. The modified LX-20 and the cleared LX-20 Laser System Family share the same RF excited lasing tube, main chassis, power supply, safety systems, microprocessor controller, and much of the same electronics. The modified LX-20 laser system maintains the same 3 base consoles established pursuant to the predicate K960475 - namely the LX-20SI, the LX-20SP, the LX-20LP, and adds the fourth, the LX-20SA. The technological characteristics of the modified LX-20 that are different from the predicate LX-20 Laser System Family are as follows:
The modified unit adds the Sharplan articulated arm from the comparable Sharplan CO, laser. The articulated arm, used unchanged, allows the attachment of the Sharplan series of laser accessories. .
ESC believes that the minor differences in the delivery capabilities of the modified LX-20 and the LX-20 Laser System Family do not raise any new issues of safety and effectiveness.
Advisory: This information was prepared for the sole purpose of compliance with the Safe Medical Devices Act of 1990. It does not imply that the procedures described herein can be performed with the equipment described without substantial risk of personal iniury or death to patients or operators due to operator error or in high risk procedures.
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Image /page/2/Picture/1 description: The image is a black and white logo for the Department of Health & Human Services - USA. The logo consists of a circular border with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized symbol that resembles three human profiles or faces stacked on top of each other, with flowing lines suggesting movement or water.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
AUG - 9 1999
Mr. Zvi Ladin Vice President for Clinical Applications and Regulatory Affairs ESC Medical Systems Ltd. Yokneam Industrial Park P.O. Box 240 Yokneam, 20692 Isreal
Re: K991628
> Trade Name: Luxar Modified LX-20 CO2 Family of Surgical Lasers and Accessories Regulatory Class: II Product Code: GEX Dated: May 9, 1999 Received: May 11, 1999
Dear Mr. Ladin:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). 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 (Premarket Approval), 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 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (OS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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Page 2 - Mr. Zvi Ladin
This letter will allow you to begin marketing your device as described in your 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4595. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
Celia M. Witten, Ph.D., M.D.
Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### Indications for Use - Dermatology
Representative examples: Tattoo removal; port wine hemangioma removal; rhinophyma reduction; telangiectasia removal; keloid reduction; wart removal; basal & squamous cell carcinoma removal; blepharoplasty; xanthalasma removal; removal of neurofibromas, hemangiomas, nevi, and tricoepitheliomas; dermabrasion such as for lentigos, keratoses, actinic keratosis & cheilitis.
# Indications for Use - Dental/Oral Surgery
Representative examples: Gingivectomy; frenum release; removal of soft tissue, cysts, and tumors.
## Indications for Use - Orthopedic
Representative examples: Menisectomy; chondromalacia ablation; partial synovectomy; lateral release; PMMA removal.
# Indications for Use - General Surgery
Representative examples: Hemorthoid removal; skin tag vaporization; pilodidal cyst removal and repair: debridement of decubitus ulcers and statis ulcers; mastectomy, breast biopsy, reduction mammoplasty; cytoreduction for metastatic disease; many dermatological procedures.
# Indications for Use - Otorhinolaryngology (ENT)
Representative examples: Subglottic stenosis vaporization; tonsillectomy; removal of vocal cord papillomas, nodules, and polyps; lymphangioma removal; pulmonary bronchial and tracheal lesion removal: turbinectomy; removal of leukoplakia of larynx; ablation of choanal atresia. Myringotomy/tympanostomy; Laser Assisted Uvulopalatoplasty (LAUP).
#### Indications for Use - Podiatry
Representative examples: Plantar wart vaporization; fungal nail treatment; partial and complete matrixectomy; porokeratoma ablation; Morton's neruoma removal; ingrown nail treatment.
Acollafo
991678
Prescription Use
(Per 21 CFR 801.109)
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510(k) Number (if known): K9916 28
Device Name: _________________________________________________________________________________________________________________________________________________________________
Indications for Use:
### Intended Use
The modified LX-20 Laser System Family is a general surgical instrument used to vaporize, incise, excise, ablate, or photo coagulate soft tissue in surgical procedures in the listed surgical specialties.
The system may be effectively utilized for those applications recognized as within the accepted indications for use of C0, laser devices performed within the listed specialties and which require power densities as calculated by power and spot size referenced in the power density charts in the operator's manual.
### Indications for Use - Gynecology
Representative examples: Condyloma, excision and vaporization, cervical, vulvar, & perineal; vaginal intraepithelial neoplasia ablation (VAIN); vulvar intraepithelial neoplasia ablation (VIN); herpes vaporization; urethral caruncle vaporization; I&D Bartholin's & nubothian cysts.
## Indications for Use - Laparoscopic Surgery
Vaporization, incision, excision, ablation, or photo coagulation of soft tissue in endoscopic and laparoscopic surgery including GYN laparoscopy where delivery of energy by the hollow fiber may be more convenient than delivery of energy by a handpiece. Representative examples: endometriosis ablation; excision of adhesions; salpingotomy; metroplasty,
# (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
| | <div>(Sign-Off)</div> |
|--|-------------------------------------------|
| | <div>of General Restorative Devices</div> |
| | <div>(k) Number</div> |
| | K991628 |
| Prescription Use | OR | Over-The-Counter Use |
|----------------------|----|--------------------------|
| (Per 21 CFR 801.109) | | (Optional Format 1-2-96) |
Page 10
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.