The external pulse oximeter (MD50i and MD50p) is designed for spot checking of the pulse oxygen saturation and pulse rate for adult at hospital. This medical device can be reused. Not for continuous monitoring.
Device Story
External Pulse Oximeter (MD50I/MD50P) performs non-invasive spot-check measurements of SpO2 and pulse rate. System comprises a SpO2 probe, signal processing module, and interface cable (30-pin for MD50I/iPhone; USB for MD50P/PC). Probe collects optical signals; module transforms electrical signals to digital data. Software (mobile app for MD50I; PC app for MD50P) receives, displays, and stores data. Used by clinicians in hospitals. Output includes real-time SpO2/PR values, waveforms, and trend graphs. Data facilitates clinical assessment of patient oxygenation status. Benefits include portable, reusable spot-checking capability.
Clinical Evidence
Clinical accuracy study conducted on 12 healthy adult volunteers (ages 21-33) under steady-state/non-motion conditions with induced hypoxia (70-100% SaO2). 11 subjects completed testing. Reference: arterial blood CO-Oximetry. MD50I (iPod Touch 4) Arms = 1.48; MD50P (DELL Vostro 1400) Arms = 2.08. Bench testing confirmed compliance with ISO 80601-2-61, IEC 60601-1, and biocompatibility (ISO 10993-5/10).
Technological Characteristics
Finger-clip pulse oximeter using Beer-Lambert law (Red 660nm, Infrared 940nm). Patient-contact material: silicone (ISO 10993 compliant). Power: 3.3V (iOS) or 5V (PC). Connectivity: 30-pin or USB. Software: Moderate level of concern. Standards: IEC 60601-1, IEC 60601-1-2, ISO 80601-2-61.
Indications for Use
Indicated for spot checking pulse oxygen saturation (SpO2) and pulse rate (PR) in adult patients in a hospital setting. Not for continuous monitoring.
Regulatory Classification
Identification
An oximeter is a device used to transmit radiation at a known wavelength(s) through blood and to measure the blood oxygen saturation based on the amount of reflected or scattered radiation. It may be used alone or in conjunction with a fiberoptic oximeter catheter.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
January 13, 2015
Beijing Choice Electronic Technology Co., Ltd. c/o Ms. Diana Hong General Manager Mid-Link Consulting Co., Ltd. P.O. Box 237-023 Shanghai, 200237 CHINA
Re: K141024
Trade/Device Name: External Pulse Oximeter, Models MD50I and MD50P Regulation Number: 21 CFR 870.2700 Regulation Name: Oximeter Regulatory Class: II Product Code: DQA Dated: December 5, 2014 Received: December 8, 2014
Dear Ms. Hong:
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 (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/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR 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 vours.
Tejashri Purohit-Sheth, M.D.
Tejashri Purohit-Sheth, M.D. Clinical Deputy Director DAGRID/ODE/CDRH FOR
Erin I. Keith, M.S. Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Exhibit #5 Indications for Use
510(k) Number: K141024 Device Name: External Pulse Oximeter (MD50I, MD50P)
Indications for Use:
The external pulse oximeter (MD50i and MD50p) is designed for spot checking of the pulse oxygen saturation and pulse rate for adult at hospital. This medical device can be reused. Not for continuous monitoring.
ZPRESCRIPTION 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 ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Page 1 of 1
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# Exhibit #6 510(k) Summary
This 510(k) Summary of 510(k) substantial equivalence information is being submitted in accordance with requirements of SMDA 1990 and 21 CFR 807.92.
The assigned 510(k) Number: K141024
- 1. Date of Submission: Apr. 18, 2014
- 2. Sponsor
Beijing Choice Electronic Technology Co., Ltd Rm 1127-1128, Fuxing Road, A36, 100039 Beijing,China
Establishment Registration Number: 3005569927
Contact Person: Lei Chen Position: Quality Director Tel: 86 10 88798300 ext. 6020 Fax: 215-4052545 Email: cc@choicemmed.com
#### Submission Correspondent 3.
Ms. Diana Hong& Mr. Tarzan Wang Mid-Link Consulting Co., Ltd P.O. Box 237-023, Shanghai, 200237, China Tel: +86-21-22815850 Fax: 240-238-7587 Email: info@mid-link.net
- 4. Proposed Device Identification
Proposed Device Name: External Pulse Oximeter Proposed Device Model: MD50I / MD50P Device Common Name: Pulse Oximeter
Classification: 2 Product Code: DQA Regulation Number: 21 CFR 870.2700 Review Panel: Anesthesiology
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Intended Use Statement:
The external pulse oximeter (MD50i and MD50p) is designed for spot checking of the pulse oxygen saturation and pulse rate for adult at hospital. This medical device can be reused. Not for continuous monitoring.
- Predicate Device Identification న్న
510(k) Number:k093757 Product Name: MD300C1 Fingertip pulse oximeter Manufacturer: Beijing Choice Electronic Technology Co., Ltd
- Device Description 6.
The MD501 includes three main parts as SpO2 probe, SpO2 module and 30 pin port. The SpO2 probe is used to collect the SpO2 and PR signal from the patient, the SpO2 module is used to process the signal from the probe and transform it to digital signal, the 30 pin port is used to connect with iPhone device for digital signal transmission.
The MD501 includes two parts of software, Upper Computer software (Mobile App) and Low Computer Software.
The Upper Computer software is installed in the iPhone device, which is used to receive the measured data (SpO2 and PR) from the MD50I, which has the following functions:
- Measured data (SpO2 and PR) receiving;
- Display the measured data (SpO2 and PR) in real time;
● Graph of the measured data (SpO2 and PR) based on the day/week/month or all of observed data trend.
● Measured data (SpO2 and PR) reviewed, the day/week/month history data could be reviewed;
- Note function, the user can make comments after specified history record;
- History data delete, the user can delete the history records;
- Personal information edit, the user can input their own information and save it;
- Share function, the user can select the specified history record to share with others by email;
The Low computer software is embedded in the MD501, which includes the SpO2 sensor and has the following functions:
- Collect the SpO2 and PR data from patient;
- Transform the electrical signal to digit signal;
- Send the digit signal to the Upper Computer software for display and following process.
The MD50P includes three main parts as SpO2 probe, SpO2 module and USB plug. The SpO2 probe is used to collect the SpO2 and PR signal from the patient, the SpO2 module is used to process the signal from the probe and transform it to digital signal, the USB is used to connect with PC device for digital signal transmission.
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The MD50P includes two parts of software. Upper Computer software (PC App) and Low Computer Software.
The Upper Computer software is install in the PC device, which is used to receive the measured data (SpO2 and PR) from the MD50P, which has the following functions:
- Insert device identified automatically;
- Measured data (SpO2 and PR) receiving;
- Display the measured data (SpO2 and PR) in real time;
- Oxygen saturation, Pulse rate, Pulse bar and waveform are clearly displayed on PC when doing real-time measuring;
- Save the current data into your PC with the format of "txt", "pdf", "xls";
- Data print;
- Personal information edit, the user can input their own information and save it, such as title, patient ID, name, gender, age, height, weight, physician comments;
- Alarm set, set the high/low SpO2 limit and high/low PR limit;
- Saved data reviewed.
- Login interface, the user needs input password and user name to access the account.
The Low computer software is embedded in the MD50P, which includes the SpO2 sensor and has the following functions:
- Collect the SpO2 and PR data from patient;
- Transform the electrical signal to digit signal;
- Send the digit signal to the Upper Computer software for display and following process.
- 7. Non-Clinical Test Conclusion
The proposed devices are handheld, internal power, BF device, the test results demonstrated that the proposed device complies with the following standards:
IEC 60601-1:2005 + CORR.1 (2006) + CORR.2 (2007), Medical electrical equipment- Part 1: General requirements for basic safety, and essential performance.
IEC 60601-1-2:2007, Medical electrical equipment - Part 1-2: General requirements for basic safety and essential performance - Collateral standard: Electromagnetic compatibility - Requirements andtests.
ISO 80601-2-61:2011,Medical electrical equipment - Part 2-61: Particular requirements for basic safety and essential performance of pulse oximeter equipment.
The SpO2 probe used with proposed device, which includes patient contacting material (silicone), is manufactured by Beijing Choice Electronic Technology CO. Ltd., and has been cleared by FDA in Mar. 04, 2009 as K082487, and compliance the following biocompatibility standard.
ISO 10993-5: 2009, Biological evaluation of medical devices - Part 5: Tests for In Vitro cytotoxicity.
ISO 10993-10: 2010, Biological evaluation of medical devices - Part 10: Tests for irritation and skin sensitization.
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In addition to the above tests, the following tests were performed to evaluate the performance of the device:
| Test Type | Test Method | Acceptance Criteria | Conclusion |
|--------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|------------|
| Main Function | Operate the device as the instruction, and check whether or not the main function meet the design specification | The main function of device shall be meet the design specification | PASS |
| SpO2Accuracy | Connect the device with SpO2 simulator, use the simulator output the SpO2 value, and check the SpO2 measurement range, display range and resolution. | Measurement Range:<br>70%-90%<br>Display Range: 0%-99%<br>Resolution: ±1% | PASS |
| Pulse Rate (PR) Accuracy | Connect the device with SpO2 simulator, use the simulator output the PR value, and check the PR measurement range, display range and resolution. | Measurement Range:<br>30-235 bpm<br>Display Range: 0-255 bpm<br>Resolution: ±1bpm | PASS |
| SpO2/PR response time | Connect the device with SpO2 simulator, use the simulator output the SpO2 and PR value, and measure the max. and average response time of SpO2/PR | The max. response time shall be less than 45 s;<br>The average response time shall be less than 30 s; | PASS |
| Environmental Test | SpO2Accuracyand Pulse Rate (PR) Accuracy tests were performed in the following conditions respectively:<br>a. Normal Condition;<br>b. High temperature storage condition;<br>c. Hot and humid storage condition | MD50I<br>SpO2: 70%~99%, ±2%<br>PR: ±2 bpm (30-99bpm) or ±2% (100-235bpm)<br>MD50P<br>SpO2: 70%~99%, ±3%<br>PR: ±2 bpm (30-99bpm) or ±2% (100-235bpm) | PASS |
| SpO2/PR accuracy under low perfusion condition | SpO2Accuracyand Pulse Rate (PR) Accuracy tests was performed under low perfusion condition. | MD50I<br>SpO2: 70%~99%, ±2%<br>PR: ±2 bpm (30-99bpm) or ±2% (100-235bpm)<br>MD50P<br>SpO2: 70%~99%, ±3%<br>PR: ±2 bpm (30-99bpm) or ±2% (100-235bpm) | PASS |
| Shelf Life Test | Bench Test was performed on accelerated aged samples. | The test samples after test should meet the following condition: | |
| | | sample;<br>No abnormal or structure<br>loosen on the sample;<br>The performance meet<br>the design specification; | |
| Performance Test<br>after Cleaning and<br>Disinfection | SpO2Accuracyand Pulse Rate (PR) Accuracy tests was<br>performed on samples subject to 5000 cycles cleaning<br>and disinfection. | MD50I<br>SpO2: 70%~99%, ±2%<br>PR: ±2 bpm (30-99bpm)<br>or ±2% (100-235bpm)<br>MD50P<br>SpO2: 70%~99%, ±3%<br>PR: ±2 bpm (30-99bpm)<br>or ±2% (100-235bpm) | PASS |
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#### Clinical Trial Conclusion 8.
### MD50I External Pulse Oximeter
As part of final product validation for Beijing Choice Electronic Tech Co. Ltd MD501 External Pulse Oximeter on iPod Touch4, and SpO2 accuracy investigation was completed. The study was conducted in accordance to EN ISO 14155-1:2009, EN ISO 14155-2:2009, ISO 9919:2005, EN ISO 9919:2009, BS EN ISO 80601-2-61:2011, and the FDA guidance Document for pulse oximeters.
The purpose of this study was to evaluate the SpO2 accuracy performance of the MD50I External pulse oximeter on iPod Touch4, during stationary (non-motion) conditions over a wide range of arterial blood oxygen saturation levels as compared to arterial blood CO-Oximetry.
After Institutional review board approval, 12 healthy adult volunteer subjects (ages 21-33yr, 46-75kg, 158-183cm, with light to dark pigmentation) were included in the study conducted July. 5-6, 2013 to evaluate the SpO2 accuracy performance of the MD501 External Pulse Oximeter on iPod Touch 4, and11 subjects completed the test as effective data collection for final data analysis, the 1 subject was excluded during testing process, because the unstable pulse rate.
Each system was evaluated during steady state/non-motion conditions with various levels of induced hypoxia resulting in stable oxygen saturation levels between 100% and 70% SaO2. Arterial blood samples were drawn during simultaneous data collection from the test devices. The blood was immediately analyzed on reference CO-Oximetry providing functional SaO2 for the basis of the SpO2 accuracy comparison.
The SpO2 accuracy performance results showed the MD501 External Pulse Oximeter on iPod Touch4 to have and Arms of 1.48 during steady state conditions over the range of 70-100%
### MD50P External Pulse Oximeter
As part of final product validation for Beijing Choice Electronic Tech Co. Ltd MD50P External Pulse Oximeter on DELL vostro 1400 PC, an SpO2 accuracy investigation was completed. The study was conducted in accordance to EN ISO 14155-1:2009, EN ISO 14155-2:2009. ISO 9919:2005, EN ISO
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9919:2009, BS EN ISO 80601-2-61:2011, and the FDA guidance Document for pulse oximeters. The purpose of this study was to evaluate the SpO2 accuracy performance of the MD50P External pulse oximeter on DELL vostro 1400 PC, during stationary (non-motion) conditions over a wide range of arterial blood oxygen saturation levels as compared to arterial blood CO-Oximetry. After Institutional review board approval, 12 healthy adult volunteer subjects (ages 21-33yr, 46-75kg, 158-183cm, with light to dark pigmentation) were included in the study conducted July. 5-6, 2013 to evaluate the SpO2 accuracy performance of the MD50P External Pulse Oximeter on DELL vostro 1400 PC, and 11 subjects completed the test as effective data collection for final data analysis, the 1 subject was excluded during testing process, because the unstable pulse rate. Each system was evaluated during steady state/non-motion conditions with various levels of induced hypoxia resulting in stable oxygen saturation levels between 100% and 70% SaO2. Arterial blood samples were drawn during simultaneous data collection from the test devices. The blood was immediately analyzed on reference CO-Oximetry providing functional SaO2 for the basis of the SpO2 accuracy comparison.
The SpO2 accuracy performance results showed the MD50P External Pulse Oximeter on iPod Touch4 to have and Arms of 2.08 during steady state conditions over the range of 70-100%
#### Substantially Equivalent 9.
| Table III-1 General Comparison | | | |
|--------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------|
| ITEM | Proposed Device<br>External Pulse Oximeter (MD50I &<br>MD50P) | Predicate Device MD300C1 Fingertip pulse<br>oximeter (k093757) | Remark |
| Product Code | DQA | DQA | SE |
| Regulation No. | 21 CFR 870.2700 | 21 CFR 870.2700 | SE |
| Class | 2 | 2 | SE |
| Intended Use | The external pulse oximeter (MD50i and<br>MD50p) is designed for spot checking of<br>the pulse oxygen saturation and pulse rate<br>for adult at hospital. This medical device<br>can be reused. Not for continuously<br>monitoring. | MD300C1 Finger pulse oximeter is a<br>portable non-invasive, spot-check, oxygen<br>saturation of arterial hemoglobin (SpO2)<br>and pulse rate of adult and pediatric patient<br>at home, and hospital (including clinical use<br>in internist/ surgery, anesthesia, intensive<br>care and etc). Not for continuously<br>monitoring. | SE |
| Measurement<br>Principle | Beer-Lambert law according to Spectrum<br>Absorption characteristics of Hb and HbO2<br>in irradiation zones of red and near-infrared<br>light. | Beer-Lambert law according to Spectrum<br>Absorption characteristics of Hb and HbO2<br>in glow and near-infrared zones. | SE |
| Technical<br>Features | Finger clip type oximeter, the sensor is<br>separated from other function, the<br>independent cable is used to connect the<br>sensor with other parts for data collection | Finger clip type oximeter, integrate the<br>sensor, measured data display and<br>measurement control operation in one<br>device. | Analysis 1 |
### Table III-1 General Comparison
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| | and control. | | | |
|--|--------------|--|--|--|
|--|--------------|--|--|--|
The proposed device has the different technical features, such as above, with predicate device for operation, but this difference only could affect data's accuracy of transfer and display, we have conducted the perform tests for data accuracy, include clinical trial, all test result of data displayed meet the requirements.
Therefore, the difference does not adversely impact substantial equivalence.
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| ITEM | Proposed Device<br>External Pulse Oximeter (MD50I &<br>MD50P) | Predicate Device MD300C1 Fingertip<br>pulse oximeter (k093757) | Remark |
|--------------------------|---------------------------------------------------------------|----------------------------------------------------------------|------------|
| Measurement | Red: 660nm | Red: 660nm | SE |
| wavelength | Infrared: 940nm | Infrared: 940nm | SE |
| SpO2measurement<br>range | 70%-99% | 70%-99% | SE |
| SpO2accuracy | 70%~99%,<br>±2% (MD50I);<br>±3%(MD50P) | 70%~99%, ±3% | SE |
| SpO2resolution | ±1% | 1% | SE |
| PR measurement<br>range | 30-235 bpm | 30~254bpm | Analysis 2 |
| PR accuracy | ±2 bpm (30-99 bpm) or<br>±2% (100-235 bpm) | ±2 bpm or ±2% | SE |
| PR resolution | ±1 bpm | 1bpm | SE |
| Data update time | <15s | <15s | SE |
Table III-2Performance Comparison
## Analysis 2:
The PR measurement range of the proposed device is different than that of the predicate device. But the measurement range is considered to be able to cover the general pulse rate of healthy people and patients. In addition, the PR measurement range is clearly on the proposed labeling to remind the user. Therefore, the difference does not adversely impact substantial equivalence.
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| ITEM | Proposed Device<br>External Pulse Oximeter (MD50I &<br>MD50P) | Predicate Device MD300C1 Fingertip<br>pulse oximeter (k093757) | Remark |
|-------------------------------------|---------------------------------------------------------------|----------------------------------------------------------------|------------|
| Power Supplier | 5V form PC or 3.3 V form iOS mobile<br>device | 2 A AA alkaline batteries | Analysis 3 |
| Electrical Safety | Comply with IEC 60601-1 | Comply with IEC 60601-1 | SE |
| EMC | Comply with IEC 60601-1-2 | Comply with IEC 60601-1-2 | SE |
| Patient Contact<br>Material | Silicone | Silicone | SE |
| Label and<br>Labeling | Conforms to FDA Regulatory<br>Requirements | Conforms to FDA Regulatory<br>Requirements | SE |
| Level of Concern<br>of the Software | Moderate | Moderate | SE |
Table III-3Safety Comparison
## Analysis 3:
.
The power supplier of the proposed device is different than that of the predicate device. But all power supplier are in compliance with the requirements of IEC60601-1. Therefore, the difference does not adversely impact substantial equivalence.
The proposed device, External Pulse Oximeter (MD50I, MD50P), is determined to be Substantially Equivalent (SE) to the predicate device, MD300C1 Fingertip pulse oximeter (k093757).
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.