Endure ETCO2/O2 Nasal Cannula has two functions 1) It is intended to deliver supplemental Oxygen to patients and 2) to obtain CO2 sampling of exhaled air
Device Story
Device is a split-lumen nasal cannula for simultaneous supplemental oxygen delivery and exhaled gas sampling. Used in hospitals, surgery centers, and acute care settings; operated by clinicians. Oxygen delivered through one nasal prong; CO2 sampled from the other for capnography monitoring. Device connects to external gas analyzer/capnograph via Luer fitting. Provides real-time respiratory monitoring and oxygenation support. Benefits include non-invasive patient monitoring and respiratory support in acute care environments.
Clinical Evidence
Bench testing only. Comparative testing performed against predicate device including CO2 sampling accuracy, ETCO2 levels, O2 flow rates (2, 4, 6 LPM), physical measurements, and Luer fitting leak testing. Biocompatibility testing (cytotoxicity, sensitization, intracutaneous irritation) conducted per ISO 10993-1. Gas pathway testing conducted per ISO 18562.
Technological Characteristics
Flexible medical grade PVC tubing; split/channeled nasal cannula design; 7-foot length; 22mm x 6mm adaptor; Luer connectors. Single-use, non-sterile. Biocompatibility per ISO 10993-1; gas pathway testing per ISO 18562.
Indications for Use
Indicated for patients >12 years of age requiring supplemental oxygen and/or CO2 monitoring.
Regulatory Classification
Identification
A carbon dioxide gas analyzer is a device intended to measure the concentration of carbon dioxide in a gas mixture to aid in determining the patient's ventilatory, circulatory, and metabolic status. The device may use techniques such as chemical titration, absorption of infrared radiation, gas chromatography, or mass spectrometry.
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September 12, 2023
Manoj Kumar Consultant/Part Time Executive 45 N Fulton St Homer, New York 13077
Re: K213767
Trade/Device Name: Endure ETCO2/02 Nasal Cannula Regulation Number: 21 CFR 868.1400 Regulation Name: Carbon Dioxide Gas Analyzer Regulatory Class: Class II Product Code: CCK, CAT Dated: January 8, 2023 Received: January 17, 2023
Dear Manoj Kumar:
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.
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
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801); medical device reporting of medical device-related 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/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 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-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,
# Bradley Q. Quinn -S
Bradley Quinn Assistant Director DHT1C: Division of Sleep Disordered Breathing, Respiratory and Anesthesia 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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# Indications for Use
510(k) Number (if known) K213767
Device Name Endure ETCO2/02 Nasal Cannula
Indications for Use (Describe)
Endure ETCO2/O2 Nasal Cannula has two functions
- 1) It is intended to deliver supplemental Oxygen to patients and
2) to obtain CO2 sampling of exhaled air
Environment of use: The device is intended to be used in hospitals, surgery centers and other acute care centers.
Patient population: Patients requiring supplemental Oxygen and/or requiring CO2 monitoring. Intended for patients above 12 years of age.
| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------|
|-------------------------------------------------|
X Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
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# K213767
## SUMMARY ("510(k) Summary" as required by section 807.92(c).)
### 1. Submitters Information:
Company Name: Endure Industries Inc
Company Address: 45 N Fulton St
Homer, NY 13077
Contact Person: Manoj Kumar, Physician Consultant.
- 2. Proprietary or Trade Name: Endure ETCO2/02 Nasal Cannula
Common/Usual Name: Analyzer, gas, carbon-dioxide, gaseous phase (accessories)
Classification Name: Analyzer, gas, carbon-dioxide, gaseous phase (accessories)
Product Code: CCK - CFR 868.1400
Device Class: Class II
Additional Product Code: CAT Cannula, Oxygen Nasal
- 3. Predicate Device Identification: This pre-market notification will demonstrate that Endure Industries CO2/Oxygen sampling cannula is substantially equivalent to the predicate device listed below
K010024 Oridion Nasal CO2/O2 Cannula
#### 4. Device description:
Endure Industries has designed an ETCO2/O2 nasal cannula and an exhaled gas sampling device. The features include sampling of CO2 from exhaled air to a capnograph. It can provide supplemental O2 and sample exhaled air at the same time. The device is configured in such a way that it has a nasal cannula with a division to deliver oxygen through one nares and sample exhaled gases through the other.
#### 5. Indications for Use:
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Endure ETCO2/O2 Nasal Cannula has two functions 1) It is intended to deliver supplemental Oxygen to patients and 2) To obtain CO2 sampling of exhaled air
#### Environment of use:
The device is intended to be used in hospitals, surgery centers and other acute care centers..
#### Patient population:
Patients requiring supplemental Oxygen and/or requiring CO2 monitoring. Intended for patients above 12 years of age.
#### 6. Technological characteristics of the device compared to the predicate device:
The technological features of the predicate and proposed devices are found to be the similar as shown in the table below. The following features are discussed here:
Design: The cannula is divided to separate the CO2 sampling part from the O2 delivery area. The length of the tubing is 7 feet for both predicate and proposed devices. Both adult and pediatric types have the same length. Male or Female Luer connectors are present on both types. The length of the adaptor is 22mm x 6 mm for both devices.
Material: Both adult and pediatric tubing are made of flexible medical grade PVC as in the predicate device.
Sterilization: The device is marketed as single-use and non-sterile. This is the same for the predicate device.
Packaging configuration: The product is individually packaged in heat sealed poly bag with instructions of use and other information inserted inside as a label. 10 units are in a shipping carton.
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| Table of comparison<br>Features | Predicate Device ORIDION<br>K010024 | Endure ETCO2/O2 Nasal Cannula<br>K213767 | Equivalence |
|--------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Indication for use | To sample exhaled gas via nasal<br>cannula and simultaneously provide<br>supplemental Oxygen near the nose<br>and mouth for inhalation | Endure ETCO2/O2 Nasal Cannula has two<br>functions<br>1) It is intended to deliver supplemental<br>Oxygen to patients and<br>2) to obtain CO2 sampling of exhaled air | Indication use is exactly the same<br>forboth pridcate device and Endure<br>cannula. Both devices sample CO2 from<br>exahled air and deliver Oxygen at the<br>same time. |
| Environment of use | Hospitals, sub-acute, pre-hospital<br>settings | Hospitals, sub-acute, pre-hospital settings | Substantially equivalent: Both devices<br>are used in hospital, prehospital and<br>subacute settings. |
| Intended Population | Adults and Pediatrics - Patient<br>requiring supplemental oxygen and /<br>or sampling of expired gases | Adults and Pediatrics - Patient requiring<br>supplemental oxygen and / or sampling of<br>expired gases | Substantially equivalent: Both devices<br>are in adults and pediatrics. |
| Duration of use | Single patient use - Disposable<br>Less than 24 hours | Single patient use - Disposable<br>Less than 24 hours | Substantially equivalent: Both predicate<br>and proposed devices are for single use<br>lasting less than 24 hours. |
| Single Patient Use | Yes | Yes | Identical: Both predicate and proposed<br>devices are for single use. |
| Dispensing | Only on prescription or as ordered by<br>a medical provider. | Only as per the order of a physician or<br>medical provider. | Substantially equivalent: Dispensing is<br>allowed only as per the order of a<br>physician or medical provider. |
| Basic Component | Nasal cannula, Oxygen tubing<br>Gas sampling line | Nasal Cannula, Oxygen tubing<br>Gas sampling line | Identical: Basic components are the<br>same for both predicate device and<br>proposed device |
| Patient Interface | Nasal cannula | Nasal Cannula | Patient interface is the same for both<br>predicate device and proposed device |
| Design | Split / channeled nasal cannula,<br>sampling in one and Oxygen delivery in<br>the other | Split / channeled nasal cannula with<br>sampling in one and Oxygen delivery in the<br>other | Substabtially Equivalent: Split /<br>channeled nasal cannula with sampling<br>in one and Oxygen deliver in the other |
| Material | Flexible PVC | Flexible PVC | Identical: Material is the same for both<br>proposed device and predicate device |
| Sampling tube specifications | Not provided<br>ID-0.06" / OD-0.1"<br>Length -2" | ID-0.08" / OD-0.1"<br>Length -2" | Identical: We have made measurements<br>of the predicate device and compared it<br>to the proposed one. |
| Biocomaptibility<br>Cytotoxicity<br>Skin Sensitivity<br>Skin Irritation | ISO 10993-1 | ISO 10993-1 | Identical test results for cytotoxicity,<br>skin senitivity and skin irritation |
| Performance Testing<br>Luer Fitting<br>Tensile strength<br>End tidal CO2 measurement | | Performance Testing<br>Luer Fitting<br>Tensile strength<br>End tidal CO2 measurement | Equivalent. |
| Age Testing | Not provided | Yes | Age testing done with cannulas<br>manufactured in 2019 and found to be<br>equivalent to cannulas manufactured in<br>2022. Such information is not available<br>for the predicate device. |
| Shelf Life | 5 years | 3 years ( Aging studied are only available to<br>verify 3 years of shelf life) | Different. Although they have a<br>difference in shelf life, both of them<br>have the same intended use, principle of<br>operation, performance<br>characteristics and scientific<br>technology. So the difference is unlikely<br>to raise any new safety or<br>effectiveness |
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## 7. Biocompatibility
We have done ISO 10993 testing on the component materials of the proposed devices. The nasal cannula part of the device is considered as in contact with the patient. Therefore the following tests are necessary. This was done by an accredited laboratory.
- Cytotoxicity
- . Sensitization
- Intracutaneous Irritation
The test results confirm that the material used are safe to use and does not pose any risks.
Gas pathway test conducted in accordance with ISO 18562
- 8. Summary for performance testing
Comparative CO2 sampling and ETCO2 level testing were done and was found to be similar between the predicate device and the proposed device. O2 flow rates were also compared at 2,4 and 6 LPM flow and were found to be similar. Physical measurements were also done and were found to be similar between the predicate device and the proposed one. Luer fitting was also compared and found to be similar and leak-free.
- 9. Conclusions: Endure Industries Inc. has demonstrated through various testing that the proposed device and predicate device can be found to be substantially equivalent. In addition, biocompatibility testing confirms the safety of the devices with regard to patient contact.
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.