The Legion™ System is indicated for emulsification, separation, and aspiration of cataracts, residual cortical material and lens epithelial cells, vitreous aspiration and cutting associated with anterior vitrectomy, bipolar coagulation, and intra-ocular lens injection. The AutoSert™ IOL Injector Handpiece is intended to deliver qualified AcrySof™ intraocular lenses into the eye following cataract removal. The AutoSert™ IOL Injector Handpiece achieves the function of intraocular lenses. The AutoSert™ IOL Injector Handpiece is indicated for use with AcrySof™ lenses SN60WF, SN6AT3 through SN6AT9, as well as approved AcrySof™ lenses that are specifically indicated for use with this inserter, as indicated in the approved labeling of those lenses.
Device Story
Tabletop console for anterior segment ophthalmic surgery; performs phacoemulsification, irrigation/aspiration, anterior vitrectomy, bipolar coagulation, and IOL injection. Inputs: ultrasonic/torsional signals to handpieces; fluidic pressure/vacuum monitoring via FMS cassette. Outputs: emulsified lens material aspiration; controlled irrigation; IOL delivery; coagulation energy. Operated by surgeons in clinical settings. Uses gravity-based irrigation; supports reusable vitrectomy handpieces and Alcon phacoemulsification handpieces. FMS module manages fluidics and pressure sensing. MultiPak FMS option allows day-use for up to 12 procedures with cross-contamination prevention features. Benefits: enables efficient cataract removal and IOL implantation through integrated, compact system.
Clinical Evidence
Bench testing only. Performance data verified compatibility with Alcon handpieces, ultrasound frequency (longitudinal/torsional), aspiration/vacuum accuracy, occlusion break surge performance, coagulation power, and anterior vitrectomy probe cut quality. Biocompatibility, sterility, and electromagnetic compatibility/electrical safety were verified per FDA-recognized standards.
Technological Characteristics
Tabletop console; gravity-based irrigation; peristaltic aspiration. Uses FMS cassette (single-use or MultiPak) with non-invasive pressure/vacuum sensors. Supports OZIL torsional and longitudinal ultrasonic phacoemulsification. Connectivity: electrical ports for handpieces, vitrectomy cutter, IOL injector, and coagulation accessory. Materials: patient-contact components biocompatibility verified. Sterilization: validated for kits/paks.
Indications for Use
Indicated for patients undergoing anterior segment ophthalmic surgery requiring cataract extraction, anterior vitrectomy, bipolar coagulation, or intraocular lens (IOL) implantation.
Regulatory Classification
Identification
A phacofragmentation system is an AC-powered device with a fragmenting needle intended for use in cataract surgery to disrupt a cataract with ultrasound and extract the cataract.
Predicate Devices
CENTURION™ Vision System (Active Sentry™) (K161794)
Submission Summary (Full Text)
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November 1, 2019
Alcon Research, LLC Nickerson Hill Associate Director, Global Regulatory Affairs 6201 South Freeway Fort Worth, TX 76134
Re: K191650
Trade/Device Name: LEGION System Regulation Number: 21 CFR 886.4670 Regulation Name: Phacofragmentation System Regulatory Class: Class II Product Code: HQC Dated: September 26, 2019 Received: September 27, 2019
Dear Nickerson Hill:
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. Although this letter refers to your product as a device. please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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.
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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 of medical devicerelated adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidanceregulatory-information/postmarketing-safety-reporting-combination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-devices/medical-devicesafety/medical-device-reporting-mdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medical-device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally. you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance/contact-us-division-industry-andconsumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
for Tieuvi Nguyen, PhD Acting Director DHT1A: Division of Ophthalmic Devices OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Ouality 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)
K191650
Device Name
LEGION System
Indications for Use (Describe)
The Legion™ System is indicated for emulsification, separation, and aspiration of cataracts, residual cortical material and lens epithelial cells, vitreous aspiration and cutting associated with anterior vitrectomy, bipolar coagulation, and intra-ocular lens injection. The AutoSert™ IOL Injector Handpiece is intended to deliver qualified AcrySof™ intraocular lenses into the eye following cataract removal.
The AutoSert™ IOL Injector Handpiece achieves the function of intraocular lenses. The AutoSert™ IOL Injector Handpiece is indicated for use with AcrySof™ lenses SN60WF, SN6AT3 through SN6AT9, as well as approved AcrySof™ lenses that are specifically indicated for use with this inserter, as indicated in the approved labeling of those lenses.
X Prescription Use (Part 21 CFR 801 Subpart D)
_ Over-The-Counter Use (21 CFR 801 Subpart C)
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#### 5 510(k) Summary K191650
This summary document has been prepared in accordance with 21 CFR 807.92.
#### Submitter of the 510(k) I.
| Company: | Alcon Research, Ltd. (on behalf of Alcon Laboratories, Inc)<br>6201 South Freeway<br>Fort Worth, TX 76134-2099, USA |
|-------------------------|---------------------------------------------------------------------------------------------------------------------|
| Primary Contact Person: | Nickerson Hill, Associate Director, Global Regulatory Affairs |
| Phone: | 817-302-5700 |
| Email: | Nickerson.hill@alcon.com |
| Date Prepared: | June 19, 2019 |
## II. Devices Subject to this 510(k)
| Trade Name: | LEGION™ System |
|------------------------|----------------------------|
| Common Name: | Phacofragmentation Unit |
| Classification Name: | Phacofragmentation Unit |
| Device Classification: | Class II – 21 CFR 886.4670 |
| FDA Panel: | Ophthalmic |
| Product Code: | HQC |
### III. Predicate Device
| Trade Name: | CENTURION™ Vision System (Active Sentry™) |
|------------------------|-------------------------------------------|
| 510(k) Number: | K161794 |
| FDA Clearance Date: | April 14, 2017 |
| Submitter: | Alcon Research, Ltd. |
| Common Name: | Phacofragmentation Unit |
| Classification Name: | Phacofragmentation Unit |
| Device Classification: | Class II - 21 CFR 886.4670 |
| FDA Panel: | Ophthalmic |
| Product Code: | HQC |
## IV. Device Description
The LEGION™ System is intended for use in anterior segment ophthalmic surgery procedures that require simultaneous lens extraction via phacoemulsification, irrigation and aspiration, and associated procedures such as anterior vitrectomy, coagulation and intraocular lens (IOL) insertion.
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The LEGION™ System consists of a standalone tabletop console, which performs the core functionalities for cataract lens extraction. The LEGION™ System's console provides two electrical connector ports that support the CENTURION™ series of ultrasound handpieces, an electric vitrectorny cutter, the Alcon AutoSert™ IOL Injector and a Coagulation accessory port on both sides of the Fluidics module. The OZIL torsional technology of Alcon's phacoemulsification handpieces and tips operates with ultrasonic torsional oscillations which can be used exclusively. combined or alternated with traditional longitudinal phacoemulsification. The traditional modalities of ultrasonic power control including continuous, pulsed, and burst application of ultrasonic power, as well as duty cycle management are available.
The same fluidics module and overall fluid management system (FMS) design of the predicate device (CENTURION™ Vision System) is used on the LEGION™ System. The FMS is an interface between the LEGION™ System Console (Fluidics Module) and the surgical handpieces, used to regulate irrigating fluid to the handpiece, aspirate fluid and debris from the handpiece, monitor irrigation and aspiration pressure and deposit the fluid and debris in a sealed drainage bag This single assembly contains a rigid plastic fluidic chamber, non-invasive pressure/vacuum sensor, drain bag, irrigating fluid administration line, as well as irrigation and aspiration handpiece tubing.
Two types of FMS can be used with the LEGION™ System: Single Use and MultiPak FMS. The MultiPak FMS is intended to be a day-use cassette for up to 12 consecutive procedures (patients). The primary difference between the single use and MultiPak FMS is the ability to replace the single use sterile irrigation (1/A) manifold and drain bag. Several design aspects have been implemented to reduce the risk of cross-contamination when using the MultiPak FMS.
The LEGION™ System utilizes gravity-based irrigation (i.e. irrigation pressure derived from the height of the irrigation fluid bag or bottle). The LEGION™ System can be used in conjunction with a manual IV pole, or can be used with the optional LEGION™ cart, which is equipped with a powered IV pole.
The LEGION™ System supports anterior vitrectomy procedures via compatibility with the reusable LEGION™ anterior vitrectomy handpiece and consumable vitrectomy probe. The reusable anterior vitrectomy handpiece drives the guillotine-style consumable vitrectomy probe to achieve anterior vitrectomy functionality.
The LEGION™ System provides bipolar coagulation capability via support for Alcon coagulation handpieces and tips, with a power rating identical to the predicate device.
#### V. Indications for Use
The LEGION™ System is indicated for emulsification, separation, irrigation, and aspiration of cataracts, residual cortical material and lens epithelial cells, vitreous aspiration and cutting associated with anterior vitrectomy, bipolar coagulation, and intra-ocular lens injection. The
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AutoSert™ IOL Injector Handpiece is intended to deliver qualified AcrySof™ intraocular lenses into the eye following cataract removal.
The AutoSert™ IOL Injector Handpiece achieves the functionality of injection of intraocular lenses. The AutoSert™ IOL Injector Handpiece is indicated for use with AcrySof™ lenses SN60WF, SN6AD1, SN6AT3 through SN6AT9, as well as approved AcrySof™ lenses that are specifically indicated for use with this inserter, as indicated in the approved labeling of those lenses.
### VI. Comparison to Technological Characteristics of the Predicate Device
The technological characteristics of the LEGION™ System are equivalent to those of the predicate device. The LEGION™ System has the same intended use as its predicate, and is compatible with the same Alcon phacoemulsification and Irrigation (I/A) tips and handpieces. The LEGION™ System also supports anterior vitrectomy procedures via the LEGION™ vitrectomy handpiece and probe, which achieves this action via a guillotine-style cutter. The LEGION™ System also uses the same Fluid Management System (FMS) technology as its predicate.
The LEGION™ System is primarily differentiated from its predicate by its smaller size, and by the removal of some features. Additionally, the LEGION™ System is compatible with an FMS MultiPak, designed to support use over multiple surgeries in a single day.
#### VII. Performance Data
Data and information on the LEGION™ System in the present 510(k) submission demonstrate:
- . Compatibility with Alcon phacoemulsification handpieces and tips
- . Ultrasound frequency (longitudinal and torsional) consistent with the predicate device
- Compatibility with Alcon I/A handpieces and tips .
- . Peristaltic aspiration in accordance with design requirements
- Vacuum range in accordance with design requirements
- Accuracy of: ●
- o Aspiration rate
- o Pressure sensing (irrigation and aspiration)
- o Vacuum control
- Occlusion Break Surge performance ●
- . Verification of effectiveness of design aspects preventing cross-contamination during use of the FMS MultiPak
- Anterior vitrectomy probe cut rate and quality .
- Coagulation power rating ●
- Compatibility with Alcon IOL injection handpiece ●
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- . Biocompatibility of the patient-contact aspects of the LEGION System proposed herein in accordance with the intended use of the devices
- Sterility and performance of the Anterior Vitrectomy Kit and FMS Paks over the claimed . shelf life
- Electromagnetic compatibility and electrical safety of the LEGION System in accordance . with FDA-recognized standards
# VIII. Conclusions
Data and information summarized herein demonstrate substantial equivalence of the LEGION™ System to the claimed predicate device.
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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.
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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.
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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.
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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.
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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
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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.
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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.