The ALN Optional Vena Cava Filter with Hook and without Hook are indicated for the prevention of recurrent pulmonary embolism via placement in the vena cava in the following situations: - Pulmonary thromboembolism when anticoagulants are contraindicated, - Failure of anticoagulant therapy in thromboembolic diseases, - Emergency treatment following massive pulmonary embolism where anticipated benefits of conventional therapy are reduced; and - Chronic, recurrent pulmonary embolism where anticoagulant therapy has failed or is contraindicated. ALN Optional Vena Cava Filters with Hook and without Hook, may be retrieved with the ALN Extraction and /or Repositioning Kits according to the Instructions For Use of these devices. The ALN Optional Vena Cava Filter with Hook may be also retrieved with a standard GooseNeck Snare according to the the Instructions For Use of this medical device.
Device Story
Conical-shaped vena cava filter; 316LVM stainless steel; 9 legs (6 anchoring with distal hooks, 3 centering). Implanted via jugular, brachial, or femoral approach to mechanically trap blood clots in inferior vena cava; prevents emboli from reaching heart/lungs. Optional retrieval hook on apex allows removal via ALN Extraction/Repositioning Kits or standard GooseNeck Snare. Used by physicians in clinical settings. Modification involves updated labeling to include PRESERVE study summary per FDA request.
Clinical Evidence
Includes summary of PRESERVE study, an FDA-directed, multicenter, prospective, open-label, non-randomized trial evaluating safety and efficacy of IVC filters from six manufacturers, including ALN. Study demonstrates IVC filters are safe and effective for treating venous thromboembolism.
Technological Characteristics
Material: 316LVM stainless steel. Design: Conical structure, 55mm high, 9 legs (6 anchoring, 3 centering). Suitable for vena cava diameters up to 32mm. Mechanical filtration principle. Implantation via jugular, brachial, or femoral approach.
Indications for Use
Indicated for patients requiring prevention of recurrent pulmonary embolism due to contraindication to anticoagulants, failure of anticoagulant therapy, emergency treatment of massive pulmonary embolism, or chronic recurrent pulmonary embolism.
Regulatory Classification
Identification
A cardiovascular intravascular filter is an implant that is placed in the inferior vena cava for the purpose of preventing pulmonary thromboemboli (blood clots generated in the lower limbs and broken loose into the blood stream) from flowing into the right side of the heart and the pulmonary circulation.
Special Controls
*Classification.* Class II. The special controls for this device are:(1) “Use of International Standards Organization's ISO 10993 ‘Biological Evaluation of Medical Devices Part I: Evaluation and Testing,’ ” and
(2) FDA's:
(i) “510(k) Sterility Review Guidance and Revision of 2/12/90 (K90-1)” and
(ii) “Guidance for Cardiovascular Intravascular Filter 510(k) Submissions.”
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June 26, 2024
Aln S.a.r.1. Alain Nigon Managing Director 589 chemin du Niel Bormes les Mimosas, 83230 France
Re: K241507
Trade/Device Name: ALN Optional Vena Cava Filter (FB.010500, FF.010995, FJ.120096, FB.HOOK, FF.HOOK, FJ.HOOK) Regulation Number: 21 CFR 870.3375 Regulation Name: Cardiovascular Intravascular Filter Regulatory Class: Class II Product Code: DTK Dated: April 22, 2024 Received: May 28, 2024
Dear Nigon Alain:
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 (the 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 available 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.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device"
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(https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review. the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-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 Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/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/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-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.
Ariel G. Ash-
shakoor -S
Digitally signed by Ariel G. Ashshakoor -S Date: 2024.06.26 11:08:56 -04'00"
For
Gregory O'Connell Assistant Director DHT2C: Division of Coronary and Peripheral Intervention Devices OHT2: Office of Cardiovascular Devices
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Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K241507
#### Device Name
ALN Optional Vena Cava Filter (FB.010500, FF.010995, FJ.120096, FB.HOOK, FF.HOOK, FJ.HOOK)
#### Indications for Use (Describe)
The ALN Optional Vena Cava Filter with Hook and without Hook are indicated for the prevention of recurrent pulmonary embolism via placement in the vena cava in the following situations:
- Pulmonary thromboembolism when anticoagulants are contraindicated,
- Failure of anticoagulant therapy in thromboembolic diseases,
- Emergency treatment following massive pulmonary embolism where anticipated benefits of conventional therapy are reduced; and
- Chronic, recurrent pulmonary embolism where anticoagulant therapy has failed or is contraindicated.
ALN Optional Vena Cava Filters with Hook and without Hook, may be retrieved with the ALN Extraction and /or Repositioning Kits according to the Instructions For Use of these devices.
The ALN Optional Vena Cava Filter with Hook may be also retrieved with a standard GooseNeck Snare according to the the Instructions For Use of this medical device.
| Type of Use (Select one or both, as applicable) | |
|------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------|
| <span style="text-decoration: overline;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) | <span style="text-decoration: overline;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) |
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# Submitter
| 510(k) Submitter | ALN S.A.R.L.<br>Mr. Alain NIGON<br>589 Chemin du Niel<br>83230 BORMES LES MIMOSAS<br>FRANCE<br>Phone: +33 4 94 01 05 01<br>Fax: +33 4 94 01 09 01<br>alain.nigon@aln2b.com |
|---------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact | ALN S.A.R.L.<br>Mrs. Séverine JOLY<br>ALN S.A.R.L.<br>Phone: +33 4 94 01 05 01<br>Fax: +33 4 94 01 09 01<br>severine.joly@aln2b.com |
| Date Prepared | June 25, 2024 |
| Device | |
| Trade Name of the Device | ALN Optional Vena Cava Filter (FB.010500, FF.010995, FJ.120096, FB.HOOK, FF.HOOK, FJ.HOOK) |
| Common Name of the Device | Vena Cava Filter |
| Classification Name | Cardiovascular Intravascular Filter (CFR 870.3375) |
| Product code | DTK |
| Regulatory Class | II |
| Device Panel | Cardiovascular |
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### Device Description
#### The device is unchanged in comparison to the predicate device.
The ALN Optional Vena Cava Filter is a conical-shaped structure made of 316LVM stainless steel and consisting of 9 legs (i.e., 9 filtering elements). The 6 shortest legs (i.e., anchoring legs) are ended with distal hooks and each leg has a different length to avoid intertwining when the filter is introduced into the sheath or released in the vessel. The 3 longest legs (i.e., centering legs) have no hooks and serve to line up the vena cava axis. The loop at the end of the longest one helps to push the filter during its implantation through the femoral vascular approach. All 9 legs are equally involved in capturing and breaking an embolus. The ALN Optional Vena Cava Filter is about 55 mm high and is suitable for vena cava diameters up to 32 mm. The implantation approaches may be jugular, brachial or femoral. The ALN Optional Vena Cava Filter with a Hook is the same ALN Optional Vena Cava Filter with an additional 4mm retrieval hook on the apex of the device.
## Intended Use and Indications for Use
#### The intended use and the indications for Use are unchanged in comparison to the predicate device.
The ALN Optional Vena Cava Filter with Hook and without Hook are indicated for the prevention of recurrent pulmonary embolism via placement in the vena cava in the following situations:
- Pulmonary thromboembolism when anticoagulants are contraindicated,
- Failure of anticoagulant therapy in thromboembolic diseases,
- Emergency treatment following massive pulmonary embolism where anticipated benefits of conventional therapy are reduced; and
- Chronic, recurrent pulmonary embolism where anticoagulant therapy has failed or is contraindicated.
ALN Optional Vena Cava Filters with Hook and without Hook, may be retrieved with the ALN Extraction and/or Repositioning Kits according to the Instructions For Use of these devices.
The ALN Optional Vena Cava Filter with Hook may be also retrieved with a standard GooseNeck Snare according to the Instructions For Use of this medical device.
#### Predicate Device for equivalence
The legally marketed device to which ALN S.A.R.L. is claiming equivalence is ALN Optional Vena Cava Filter:
| Trade Name | ALN Optional Vena Cava Filter and ALN Extraction and/or Repositioning Kit |
|---------------------|---------------------------------------------------------------------------|
| 510(k) Number | K163699 |
| Common Name | Vena Cava Filter and Extraction Kit |
| Classification Name | Cardiovascular Intravascular filter (870.3375) |
| Product Code | DTK |
| Regulatory Class | II |
| Device Panel | Cardiovascular |
Important note: the predicate device ALN Optional Vena Cava Filter was FDA Cleared together with ALN Extraction and/or Repositioning Kit, under the trade name "ALN Optional Vena Cava Filter and ALN Extraction and/or Repositioning Kit". The ALN Extraction and/or Repositioning Kit has been designed for the retrieval of an implanted predicate device ALN Optional Vena Cava Filter. This device modification concerns labeling changes only
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#### ALN S.A.R.L - 510(k) summary - K241507
for the ALN Optional Vena Cava Filter. The labeling for the Extraction and/or Repositioning kit, remains unchanged.
## Technological Characteristics
#### The technological characteristics are unchanged in comparison to the predicate device.
- -Technological principle: the technological principle is unchanged in comparison to the predicate device. The mechanical trapping of blood clots. It is based on the filtering legs constituting the conical-shaped filter and the compression movement in the inferior vena cava, preventing them from reaching the heart and lungs, and reducing the risk of pulmonary embolism.
- -Design: The design is unchanged in comparison to the predicate device. The ALN Optional Vena Cava Filter is a conical-shaped structure consisting of 9 legs at two different levels: an upper level for anchoring (6 shorter legs) and a lower level for centering (3 longer legs). The legs are crimped inside the filter apex. The distal tip of the anchoring legs is curved in a hook shape allowing an active anchorage. Two centering legs with flaked to reduce traumatic risk on the vena wall. One centering leg with a loop allow to push the filter during femoral implantation. The implantation kit includes: the ALN filter in its filter-holder, an introduction system (dilator, introducer sheath, pushing catheter), a puncture needle and a J-guidewire.
- -Raw Materials: The raw material is unchanged in comparison to the predicate device. The ALN Optional Vena Cava Filter is made of 316 LVM stainless-steel.
- -Manufacturing process: the manufacturing process is unchanged in comparison to the predicate device .
- -Packaging and sterilization process: the packaging and sterilization processes are unchanged in comparison to the predicate device.
## Labeling
#### The product labels and the patient card are unchanged in comparison to the predicate device.
#### The Instructions for Use are updated in comparison to the predicate device.
The PRESERVE Study summary is included in the Instruction for Use of each model of ALN Optional Vena Cava Filter, at the FDA's request.
PRESERVE is an FDA-directed multicenter, prospective, open-label, non-randomized trial that studied the safety and efficacy of IVC filters from six manufacturers, including ALN. The study demonstrates inferior vena cava (IVC) filters are safe and effective way to treat venous thromboembolism (VTE).
## Substantial Equivalence
The design, material, components, fundamental technology, intended use and indications for use are unchanged in comparison to the predicate device.
The reason for submitting this Special 510(k) notification is about a labeling change, requested by the FDA to all manufacturer following the PRESERVE study outcomes: inclusion of new clinical data (summary of the PRESERVE study) in the Instruction for Use of the ALN Optional Vena Cava Filter.
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# Conclusion
The comparison of design, material, components, technological characteristics, intended use, and indications for use demonstrate that the modification to the labeling does not raise new questions of safety and effectiveness and supports substantial equivalence of the subject device to the predicate device.
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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.
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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
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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.
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.
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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.
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.