The Relieva SpinPlus Balloon Sinuplasty System is intended to: provide a means to access the sinus space and illuminate within and transilluminate across nasal and sinus structures; dilate the sinus ostia and spaces associated with the paranasal sinus cavities for diagnostic and therapeutic procedures; and irrigate from within a target simus for therapeutic procedures and to facilitate diagnostic procedures. For children aged 17 and under, the Relieva SpinPlus Balloon Sinuplasty System is intended to: provide a means to access the sinus space and illuminate within and transilluminate across nasal and sinus structures; dilate sinus ostia and spaces associated with the maxillary sinus for diagnostic procedures; and irrigate from within the maxillary sinus for therapeutic procedures and to facilitate diagnostic procedures.
Device Story
Integrated sinus dilation system; combines handle, guide catheter, sinus balloon catheter, and illuminated guidewire into single device. Used by physicians in clinical settings to access, illuminate, and transilluminate nasal/sinus structures; dilates sinus ostia and spaces; enables irrigation from within target sinus without instrument exchanges. Device provides visual confirmation via transillumination; assists physician in navigating sinus anatomy. Benefits include reduced procedural complexity and ability to perform access, dilation, and irrigation with one device.
Clinical Evidence
Bench testing only. Evaluated simulated use, dimensional attributes, cycle fatigue, balloon burst, bond separation, irrigation flow rate, and wire light output. Biocompatibility and sterilization (AAMI/ANSI/ISO 11135-1:2007) validated. Packaging shelf life established per ASTM F1980-07. No clinical data required.
Technological Characteristics
Integrated handle assembly with sinus guide catheter, balloon catheter, and illuminated guidewire. Sterilization via ethylene oxide (ISO 10993-7:2008). Packaging shelf life 3 months (ASTM F1980-07). Mechanical operation for sinus access and dilation.
Indications for Use
Indicated for patients (including children aged 17 and under) requiring access, illumination, and transillumination of nasal/sinus structures; dilation of sinus ostia and associated spaces (maxillary sinus for children) for diagnostic/therapeutic procedures; and irrigation of target sinuses.
Regulatory Classification
Identification
An ear, nose, and throat manual surgical instrument is one of a variety of devices intended for use in surgical procedures to examine or treat the bronchus, esophagus, trachea, larynx, pharynx, nasal and paranasal sinus, or ear. This generic type of device includes the esophageal dilator; tracheal bistour (a long, narrow surgical knife); tracheal dilator; tracheal hook; laryngeal injection set; laryngeal knife; laryngeal saw; laryngeal trocar; laryngectomy tube; adenoid curette; adenotome; metal tongue depressor; mouth gag; oral screw; salpingeal curette; tonsillectome; tonsil guillotine; tonsil screw; tonsil snare; tonsil suction tube; tonsil suturing hook; antom reforator; ethmoid curette; frontal sinus-rasp; nasal curette; nasal rasp; nasal rongeur; nasal saw; nasal scissors; nasal snare; sinus irrigator; sinus trephine; ear curette; ear excavator; ear rasp; ear scissor, ear snare; ear spoon; ear suction tube; malleous ripper; mastoid gauge; microsurgical ear chisel; myringotomy tube inserter; ossici holding clamp; sacculotomy tack inserter; vein press; wire ear loop; microrule; mirror; mobilizer; ear, nose, and throat punch; ear, nose and throat knife; and ear, nose, and throat trocar.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features the department's name in a circular arrangement around a stylized symbol. The symbol consists of three human profiles facing right, layered on top of each other, with flowing lines beneath them.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
April 22, 2015
Acclarent, Inc. Pavan Sethi, Ph.D. Manager, Regulatory Affairs 1525-B O'Brien Drive Menlo Park, CA 94025
Re: K143541
> Trade/Device Name: Relieva SpinPlus Balloon Sinuplasty System Regulation Number: 21 CFR 874.4420 Regulation Name: Ear, Nose, And Throat Manual Surgical Instrument Regulatory Class: Class I Product Code: LRC Dated: March 20, 2015 Received: March 23, 2015
Dear Dr. Sethi:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food. Drug. and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA), You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. 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 device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours.
# Eric A. Mann -S
for Malvina B. Eydelman, M.D. Director Division of Ophthalmic and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### Indications for Use
510(k) Number (if known) K143541
Device Name Relieva SpinPlus Balloon Sinuplasty System
#### Indications for Use (Describe)
The Relieva SpinPlus Balloon Sinuplasty System is intended to: provide a means to access the sinus space and illuminate within and transilluminate across nasal and sinus structures; dilate the sinus ostia and spaces associated with the paranasal sinus cavities for diagnostic and therapeutic procedures; and irrigate from within a target simus for therapeutic procedures and to facilitate diagnostic procedures.
For children aged 17 and under, the Relieva SpinPlus Balloon Sinuplasty System is intended to: provide a means to access the sinus space and illuminate within and transilluminate across nasal and sinus structures; dilate sinus ostia and spaces associated with the maxillary sinus for diagnostic procedures; and irrigate from within the maxillary sinus for therapeutic procedures and to facilitate diagnostic procedures.
#### Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
#### PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON A SEPARATE PAGE IF NEEDED.
#### FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
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Image /page/3/Picture/0 description: The image shows the logo for Acclarent. The word "Acclarent" is written in a sans-serif font, with the "A" in black and the rest of the letters in a dark purple color. There is a curved line above the "ent" in purple.
## 510(K) SUMMARY
| Sponsor/Submitter: | Acclarent, Inc.<br>1525-B O'Brien Drive<br>Menlo Park, California 94025 |
|-----------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Pavan Sethi, Ph.D.<br>Manager, Regulatory Affairs<br>Phone: (650) 687-5413<br>Fax: (650) 687-4847 |
| Date of Submission: | December 12, 2014 |
| Device Trade Name: | Relieva SpinPlus Balloon Sinuplasty System |
| Common Name: | Sinus Dilation System |
| Device Classification: | Class I |
| Regulation Number: | 21 CFR 874.4420 |
| Classification Name: | Ear, Nose, and Throat Manual Surgical Instrument |
| Product Code: | LRC |
| Predicate Devices: | Relieva Spin Sinus Dilation System (Primary Predicate, K111875)<br>Relieva Solo Elite Sinus Balloon Catheter (K111254)<br>Relieva Luma Sinus Illumination System (K071845) |
| Device Description: | The Relieva SpinPlus Balloon Sinuplasty System is an integrated<br>device that incorporates an ergonomically designed Handle, an<br>illuminated Guidewire, a Sinus Balloon Catheter, and a Guide Catheter.<br>The Sinus Balloon Catheter enables sinus irrigation without instrument<br>exchanges. The principles of operation of SpinPlus are similar to the<br>predicate devices in allowing for access and enlargement of sinus ostia,<br>and irrigation from within the target sinus. |
| Indications for Use: | The Relieva SpinPlus Balloon Sinuplasty System is intended to: provide<br>a means to access the sinus space and illuminate within and<br>transilluminate across nasal and sinus structures; dilate the sinus ostia<br>and spaces associated with the paranasal sinus cavities for diagnostic<br>and therapeutic procedures; and irrigate from within a target sinus for<br>therapeutic procedures and to facilitate diagnostic procedures. |
| | For children aged 17 and under, the Relieva SpinPlus Balloon<br>Sinuplasty System is intended to: provide a means to access the sinus |
| | space and illuminate within and transilluminate across nasal and sinus<br>structures; dilate sinus ostia and spaces associated with the maxillary<br>sinus for diagnostic and therapeutic procedures; and irrigate from within<br>the maxillary sinus for therapeutic procedures and to facilitate<br>diagnostic procedures. |
| Technological<br>Characteristics: | The Relieva SpinPlus Balloon Sinuplasty System combines a Sinus<br>Guide Catheter and Handle Assembly (integrated with Sinus Balloon<br>Catheter, Sinus Irrigation and Illuminated Sinus Guidewire) into a<br>single device. |
| Performance Data: | Bench testing met all acceptance criteria for attributes such as simulated<br>use testing, dimensional attributes, cycle fatigue, balloon burst, bond<br>separation, irrigation flow rate and wire light output. Testing also<br>showed that the SpinPlus Balloon Sinuplasty System is biocompatible. |
| | The sterilization process has been validated per AAMI/ANSI/ISO<br>11135-1: 2007 and demonstrated a sterility assurance level of 10-6. The<br>method used for sterilization validation is the overkill (half-cycle<br>approach) in a fixed chamber. Ethylene oxide residuals have been<br>tested and meet ISO 10993-7:2008 requirements. The subject device is<br>not tested nor labeled as “non-pyrogenic”. |
| | Packaging shelf life has been established to be 3 months per ASTM<br>F1980-07. |
| | Clinical data were not necessary for the SpinPlus Balloon Sinuplasty<br>System. The performance data demonstrate that the device performs as<br>intended. |
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Image /page/4/Picture/0 description: The image shows the logo for Acclarent. The word "Acclarent" is written in a sans-serif font, with the "A" and "ccla" in black and the "rent" in purple. There is a purple curved line above the "rent" portion of the logo.
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.