The LumenCare Azure is intended for intraluminal brachytherapy and is used for treatment of the lung or other lumen, e.g. bronchus and bile duct. The LumenCare Azure is designed to fit in the working channel of an endoscope.
Device Story
LumenCare Azure is a plastic catheter for intraluminal brachytherapy; used to deliver radiation to body lumens (lung, bronchus, bile duct). Device inserted directly or via endoscope working channel; guide wire recommended to prevent kinking. Once positioned, endoscope removed while catheter immobilized. Catheter connects to Nucletron/Elekta remote afterloaders (microSelectron HDR, Flexitron HDR/Cobalt) via adapter; used with Oncentra Brachy/Prostate planning software. Compatible with CT, X-ray, and cone beam imaging. Used by clinicians in clinical settings for image-based planning and treatment delivery. Benefits include precise radiation delivery to target lumen sites.
Clinical Evidence
No clinical data. Bench testing only. Performance testing included packaging integrity (ASTM F88, F1929, F2096), transport simulation (ASTM D4169), accelerated aging (ASTM F1980), and sterile barrier/sterilization validation (ISO 11607-1/2, ISO 11135). All tests met acceptance criteria.
Technological Characteristics
Plastic catheter, 5F diameter, 140cm or 150cm lengths, round tip. Compatible with remote afterloaders and treatment planning software. Sterile barrier system validated per ISO 11607-1/2. Sterilization via Ethylene Oxide (EO) per ISO 11135 (SAL 10^-6). Packaging integrity tested per ASTM F88, F1929, F2096.
Indications for Use
Indicated for intraluminal brachytherapy treatment of lung or other lumen (e.g., bronchus, bile duct) in adult patients.
Regulatory Classification
Identification
A remote controlled radionuclide applicator system is an electromechanical or pneumatic device intended to enable an operator to apply, by remote control, a radionuclide source into the body or to the surface of the body for radiation therapy. This generic type of device may include patient and equipment supports, component parts, treatment planning computer programs, and accessories.
Predicate Devices
LumenCare Azure Set F6, 150cm, LumenCare Azure Set 5F, 150 cm, LumenCare Azure Set 5F, 140 cm (K132874)
Submission Summary (Full Text)
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**FDA** U.S. FOOD & DRUG
ADMINISTRATION
July 24, 2026
Nucletron B.V.
Loes Vloet-Emonts
Regulatory Affairs Engineer, BL-Q Brachy
3900 Ax Veenendaal, P.O. Box 930
Waardgelder 1
Veenendaal, 3905TH
Netherlands
Re: K262383
Trade/Device Name: LumenCare Azure
Regulation Number: 21 CFR 892.5700
Regulation Name: Remote Controlled Radionuclide Applicator System
Regulatory Class: Class II
Product Code: JAQ
Dated: July 13, 2026
Received: July 13, 2026
Dear Loes Vloet-Emonts:
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.
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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" (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 Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).
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 (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-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (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.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
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-devices/medical-device-safety/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-devices/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-devices/device-advice-comprehensive-regulatory-
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K262383 - Loes Vloet-Emonts
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assistance/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,
Lora D. Weidner, Ph.D.
Assistant Director
Radiation Therapy Team
DHT8C: Division of Radiological
Imaging and Radiation Therapy Devices
OHT8: Office of Radiological Health
Office of Product Evaluation and Quality
Center for Devices and Radiological Health
Enclosure
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| Indications for Use | | |
| --- | --- | --- |
| Please type in the marketing application/submission number, if it is known. This textbox will be left blank for original applications/submissions. | K262383 | ? |
| Please provide the device trade name(s). | | ? |
| LumenCare Azure | | |
| Please provide your Indications for Use below. | | ? |
| The LumenCare Azure is intended for intraluminal brachytherapy and is used for treatment of the lung or other lumen, e.g. bronchus and bile duct. The LumenCare Azure is designed to fit in the working channel of an endoscope. | | |
| Please select the types of uses (select one or both, as applicable). | ☑ Prescription Use (21 CFR 801 Subpart D) ☐ Over-The-Counter Use (21 CFR 801 Subpart C) | ? |
| Please select the age group(s) for which the device(s) is to be used. | ☐ Neonates/Newborns (Birth to < 29 days old) ☐ Infants (29 days old to < 2 years old) ☐ Children (2 years old to < 12 years old) ☐ Adolescents (12 years old to < 22 years old) ☑ Adults (22 years old and greater) | ? |
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SPECIAL 510(K) SUMMARY

K262383
# SPECIAL 510(K) SUMMARY (21 CFR § 807.92)
# I. SUBMITTER
Nucletron B.V.
3900 AX Veenendaal
P.O. Box 930
Waardgelder 1
3905 TH Veenendaal
The Netherlands
Contact
Loes Vloet-Emonts
Loes.Vloet-Emonts@Elekta.com
+31 (318) 557 133
Establishment Registration #:
3002807741
510(k) Number:
K132874
Date prepared:
13 July 2026
# II. DEVICE
Trade Name:
LumenCare Azure
Product Classification:
Class II
Common Name:
LumenCare Azure
Regulation Number:
21 CFR § 892.5700
Classification Name:
System, Applicator, Radionuclide, Remote-Controlled
Product Code:
JAQ
# III. PREDICATE DEVICE
Predicate Device #:
K132874
Predicate Trade Name:
LumenCare Azure Set F6, 150cm,
LumenCare Azure Set 5F, 150 cm
LumenCare Azure Set 5F, 140 cm
Nucletron B.V.
LumenCare Azure - Special 510(k)
July 2026 |
Page 1
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SPECIAL 510(K) SUMMARY
# IV. DEVICE DESCRIPTION
The device will function as catheter for intraluminal brachytherapy treatments. This type of applicator is commonly used for brachytherapy for lumen type body sites.
The device will consist of a plastic catheter which can be fed into a lumen directly or via a biopsy channel of an endoscope to bring the catheter to the treatment area in the required body site.
With the use of an adapter the catheter can be connected directly to an afterloader. The LumenCare Azure can be used:
- During a complete imaging, planning and treatment cycle.
- In combination with the following afterloaders:
o microSelectron HDR
o Flexitron HDR/Cobalt
- In combination with Oncentra Brachy or Oncentra Prostate treatment planning software.
The LumenCare Azure is available in 5F diameter and in two different lengths (140cm, 150cm) with a round tip. The catheter can be used for image based planning, i.e. X-ray (with markers).
The LumenCare Azure is specifically manufactured for the Elekta/Nucletron remote afterloaders. The catheter is connected to the afterloader with an adapter.
Insertion of the catheter can be done directly into a lumen or with an insertion guidance for example an endoscope. To avoid kinking a guide wire is recommended to be used, which is inserted in the catheter before insertion into the lumen.
When the catheter is in position the endoscope is removed gently while holding the catheter in position with the guide wire.
After removal of the endoscope the catheter will be immobilized and the guide wire removed.
The guide wire is not part of the applicator and not delivered with the applicator.

Figure 1 Illustration of the LumenCare Azure
The subject device has the same technological characteristics as the predicate device, except for the packaging configuration.
The modification consists of a change to a single pouch sterile barrier system. No changes were made to:
- device materials
- design or functional characteristics
- sterilization modality
- clinical performance
The modification does not alter the fundamental scientific technology of the device.
# V. INTENDED USE / INDICATIONS for USE
The LumenCare Azure is intended for intraluminal brachytherapy and is used for treatment of lung or other lumen, e.g. bronchus and bile duct. The LumenCare Azure is designed to fit in the working channel of an endoscope.
Nucletron B.V.
LumenCare Azure - Special 510(k)
July 2026 |
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SPECIAL 510(K) SUMMARY
VI. INDICATIONS for USE COMPARISON
The intended use of the device is identical to that of the predicate device cleared under K132874.
VII. COMPARISON OF TECHNOLOGY CHARACTERISTICS WITH THE PREDICATE
The subject device has the same technological characteristics as the predicate device, except for the packaging configuration.
The modification mainly consists of a change to a single pouch sterile barrier system.
No changes were made to:
- device materials
- design or functional characteristics
- sterilization modality
- clinical performance
The device remains compatible with the same imaging modalities (CT, X-ray, and cone beam imaging) as the predicate device.
The modifications do not alter the fundamental scientific technology of the device.
VIII. SUMMARY OF PERFORMANCE TESTING (NON-CLINICAL)
Development, verification and validation activities have been carried out in accordance with design controls as required by FDA's Quality System Regulation (21 CFR § 820.30), applicable ISO 13485 Quality Management System requirements, ISO 14971 Risk Management requirements and other FDA recognized consensus standards (either full or partial applicable). Performance testing was conducted to evaluate the effect of the packaging modification on device safety and effectiveness.
Risks associated with the packaging change were identified and mitigated. Identified risks included:
- loss of sterility
- packaging damage during transport and storage
Verification and validation activities were designed to confirm that these risks are adequately controlled and that no new risks were introduced.
1. Packaging Validation
- Packaging integrity testing performed per:
- ASTM F88 (seal strength)
- ASTM F1929 (dye penetration)
- ASTM F2096 (bubble emission)
- Objective: Confirm sterile barrier integrity of the single pouch system
- Result:
- All acceptance criteria met
- No seal failures or integrity breaches observed
2. Transport Simulation Testing
- Conducted per ASTM D4169 distribution testing
Nucletron B.V.
LumenCare Azure - Special 510(k)
July 2026 |
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# SPECIAL 510(K) SUMMARY
- Simulated real-world shipping and handling conditions
- Objective: Ensure packaging withstands distribution stresses
- Result:
- Packaging maintained integrity post-testing
- No damage impacting sterile barrier function observed
# 3. Accelerated Aging / Shelf-Life Testing
- Conducted per ASTM F1980
- Simulated 5-year shelf life (accelerated aging at elevated temperature)
- Acceptance Criteria:
- Maintenance of packaging integrity
- No material degradation affecting performance
- Result:
- Packaging and device met all dimensional and integrity requirements after aging
- No degradation impacting functionality or sterility
# 4. Sterile Barrier System Validation
- Pouch sealing process validated in accordance with:
- ISO 11607-1
- ISO 11607-2
- Validation included:
- Process Characterization Study (PCS)
- Operational Qualification (OQ)
- Performance Qualification (PQ)
- Result:
- Sealing processes demonstrated reproducibility and consistency
- All sterile barrier system requirements met predetermined acceptance criteria
# 5. Sterilization Validation
- The package system was evaluated
- Ethylene oxide (EO) sterilization validation conducted per ISO 11135
- Included evaluation of the new pouch configuration
- Outcome:
- Sterility Assurance Level (SAL) of 10⁻⁶ achieved
- EO/ECH residuals within allowable limits
- Packaging system compatible with sterilization process
- Sterility risk are effectively mitigated
# Summary of Results
All testing was successfully completed with no failures, deviations, or unresolved issues.
Results demonstrate that:
- identified risks were effectively mitigated
- sterile barrier integrity is maintained
- packaging withstands transport and shelf life conditions
- no new hazards or increased risks were introduced
Nucletron B.V.
LumenCare Azure - Special 510(k)
July 2026 |
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SPECIAL 510(k) SUMMARY
IX. SUSTANTIAL EQUIVALENCE CONCLUSION
The performance testing, conducted within a risk management framework, demonstrates that the change to a single pouch packaging configuration does not adversely affect the safety or effectiveness of the device. All identified risks have been appropriately controlled and verified, and no new risks were introduced.
The subject device remains substantially equivalent to the predicate device, as the modification:
- maintains sterility and device integrity
- preserves imaging compatibility and performance
- does not introduce new or increased risks
- does not affect intended use or technological characteristics
Therefore, the subject device is considered substantially equivalent to the predicate device.
Nucletron B.V.
LumenCare Azure - Special 510(k)
July 2026 |
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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.
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
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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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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.