Bioflux Software II is intended to be used to view and annotate data acquired from diagnostic ECG sources of 1 to 3-leads. Bioflux Software II is operated in a web browser and data is accessed via the users' credentials on the hardware platform running the web browser. It will be used by cardiologists, general practitioners, cardiac, ECG technicians, nurses, monitoring service technicians, and other cardiac related institutions. Bioflux Software II will be used in independent clinical testing facilities. clinics, hospitals, physician's offices, or anywhere a physician or qualified practitioners deem appropriate. Bioflux Software II does not offer diagnosis, or medical alarms. It is intended that competent human intervention be involved before any impact on health occurs. Clinical judgement and experience are used to check and interpret the data.
Device Story
Browser-based ECG viewer; displays 1-3 lead ECG records; enables manual annotation, storage, and reporting. Inputs: ECG files via manual upload or API integration from third-party devices. Operation: runs in Chrome/Firefox; user accesses data via credentials. Output: visual ECG waveforms on monitor or printed reports. Usage: clinical settings (hospitals, clinics, physician offices) by trained clinicians (cardiologists, technicians, nurses). Clinical utility: provides tools for manual interval measurement and beat analysis; supports clinical decision-making by facilitating review of diagnostic data. Benefits: enables efficient remote or local review of ECG recordings; ensures human oversight in interpretation.
Clinical Evidence
Bench testing only. No clinical data presented. Verification activities included scenario validations, beat marker confirmation testing, and functional testing across supported web browsers (Chrome and Firefox). Device complies with AAMI EC11, AAMI EC38, IEC60601-2-25, and IEC60601-2-47 standards.
Technological Characteristics
Browser-based software; compatible with Google Chrome and Firefox (2018+). Supports JSON ECG data formats. Features manual beat calipers and horizontal calipers for heart rate averaging. Complies with IEC60601-2-47 and IEC60601-2-25. Operates on standard hardware platforms via web browser.
Indications for Use
Indicated for viewing and annotating 1 to 3-lead diagnostic ECG data. Used by cardiologists, GPs, cardiac/ECG technicians, nurses, and monitoring technicians in clinical facilities, hospitals, or physician offices. No diagnosis or medical alarms provided; requires human interpretation.
Regulatory Classification
Identification
A medical magnetic tape recorder is a device used to record and play back signals from, for example, physiological amplifiers, signal conditioners, or computers.
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA logo on the right. The FDA logo features the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.
July 29, 2020
Biotricity Spencer Ladow VP of Engineering 275 Shoreline Drive, Suite 150 Redwood City, California 94065
Re: K201040
Trade/Device Name: Bioflux Software II Regulation Number: 21 CFR 870.2800 Regulation Name: Medical Magnetic Tape Recorder Regulatory Class: Class II Product Code: MWJ Dated: June 29, 2020 Received: July 2, 2020
Dear Spencer Ladow:
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
{1}------------------------------------------------
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) 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 (OS) 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,
Jennifer Shih Assistant Director Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
### Indications for Use
510(k) Number (if known) K201040
Device Name Bioflux Software II
#### Indications for Use (Describe)
Bioflux Software II is intended to be used to view and annotate data acquired from diagnostic ECG sources of 1 to 3leads. Bioflux Software II is operated in a web browser and data is accessed via the users' credentials on the hardware platform running the web browser. It will be used by cardiologists, general practitioners, cardiac, ECG technicians, nurses, monitoring service technicians, and other cardiac related institutions.
Bioflux Software II will be used in independent clinical testing facilities. clinics, hospitals, physician's offices, or anywhere a physician or qualified practitioners deem appropriate.
Bioflux Software II does not offer diagnosis, or medical alarms. It is intended that competent human intervention be involved before any impact on health occurs. Clinical judgement and experience are used to check and interpret the data.
| Type of Use (Select one or both, as applicable) | |
|------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------|
| <div style="display:flex; align-items:center;"><span style="font-size:20px;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D)</div> | <div style="display:flex; align-items:center;"><span style="font-size:20px;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C)</div> |
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995.
#### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW *
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
# 510(k) SUMMARY (as required by 807.92)
# 1. SUBMITTER
Biotricity
275 Shoreline Drive, Suite 150
Redwood City CA 94065
1-650-832-1626
Contact: Spencer LaDow
Date Prepared: June 28, 2020
## 2. DEVICE
Name of Device: Bioflux Software II Classification Name: Medical Magnetic Tape Recorder Classification Number: 21 CFR 870.2800 Device Panel: Cardiovascular Regulatory Class: Class II Product Code: MWJ
# 3. PREDICATE DEVICE
Name of Device: Bioflux Software Classification Name: Medical Magnetic Tape Recorder Classification Number: 21 CFR 870.2800 Device Panel: Cardiovascular Regulatory Class: Class II Product Code: DSH 510(k): K162571
## 4. DEVICE DESCRIPTION
Bioflux Software II is a browser based ECG viewer software that displays ECG records and provides tools for trained clinicians to annotate (store, retrieve and report) those ECG
{4}------------------------------------------------
recordings. It is utilized by manually opening ECG files of supported formats or through an API that allows for third parties to integrate their devices and directly push ECG files into the viewer.
Bioflux Software II fulfills all of the following:
- 1. It is a cardiology software product, running locally in a browser.
- 2. Bioflux Software II operates on 2018 or later versions of Chrome and Firefox browsers.
- 3. The data can be opened manually or entered via keyboard, mouse or touchscreen where upon it gets opened in the browser for viewing and storage.
- 4. Information can be displayed on the computer monitor or printed on paper using the web browser.
## 5. Indications for USE
Bioflux Software II is intended to be used to view and annotate data acquired from diagnostic ECG sources of 1 to 3-leads. Bioflux Software II is operated in a web browser and data is accessed via the users' credentials on the hardware platform running the web browser. It will be used by cardiologists, general practitioners, cardiac, ECG technicians, nurses, monitoring service technicians, and other cardiac related institutions.
Bioflux Software II will be used in independent clinical testing facilities, clinics, hospitals, physician's offices, or anywhere a physician or qualified practitioners deems appropriate.
Bioflux Software II does not offer diagnosis, or medical alarms. It is intended that competent human intervention be involved before any impact on health occurs. Clinical judgement and experience are used to check and interpret the data.
| Product/<br>510(k) # | BioFlux Software II/<br>K201040 (under review) | BioFlux Software/<br>K162571 |
|----------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | Bioflux Software II is intended to be used<br>to view and annotate data acquired from<br>diagnostic ECG sources of 1 to 3-leads.<br>Bioflux Software II is operated in a web<br>browser and data is accessed via the users'<br>credentials on the hardware platform<br>running the web browser. It will be used<br>by cardiologists, general practitioners,<br>cardiac, ECG technicians, nurses,<br>monitoring service technicians, and other<br>cardiac related institutions. | Bioflux software is intended to be used to<br>analyze, view, and report ECG data acquired<br>from a variety of ECG sources including<br>single and 3-lead ECG devices. Bioflux<br>software is operated locally in a browser and<br>data is accessed via the users' credentials on<br>the hardware platform running the browser.<br>It will be used by cardiologists, general<br>practitioners, cardiac, or ECG technicians,<br>nurses, monitoring service technicians, and<br>other cardiac related institutions, or care<br>givers, in independent clinical testing<br>facilities, clinics, hospitals, physician's<br>offices, or anywhere a physician or qualified<br>non-physician practitioners deems<br>appropriate. |
| | Bioflux Software II will be used in<br>independent clinical testing facilities,<br>clinics, hospitals, physician's offices, or<br>anywhere a physician or qualified<br>practitioners deem appropriate. | |
| | Bioflux Software II does not offer<br>diagnosis, or medical alarms. It is intended | Bioflux software does not offer diagnosis, or<br>medical alarms. It is intended that<br>competent human intervention be involved |
#### Indications for Use Comparison Table:
{5}------------------------------------------------
| that competent human intervention be<br>involved before any impact on health<br>occurs. Clinical judgement and experience<br>are used to check and interpret the data. | before any impact on health occurs. Clinical<br>judgement and experience are used to check<br>and interpret the data. |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|
# 6. SUMMARY OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATED DEVICE
The Bioflux Software II is substantially equivalent in intended use and similar technological characteristics of Bioflux Software cleared under K162571.
| Category | Bioflux Software II | Bioflux Software |
|----------------------------------------------------------------------------------------------|--------------------------------------------------------------|-----------------------------------------------------------------------|
| 510(k) Number | K201040 | K162571 |
| Classification Name | Medical Magnetic Tape Recorder | Medical Magnetic Tape Recorder |
| Classification Number | 21 CFR 870.2800 | 21 CFR 870.2800 |
| Product Code | MWJ | DSH |
| Intended Use | View and annotate data acquired from diagnostic ECG sources. | Analyze, view and report data acquired from a variety of ECG sources. |
| The ECG Viewer will meet the IEC60601-2-47. | Yes | Yes |
| The ECG Viewer will meet the IEC60601-2-25 Standard. | Yes | Yes |
| ECG viewer will view and annotate data acquired from diagnostic ECG sources of 1 to 3-leads. | Yes | Yes |
| ECG viewer will be compatible with web browsers | Yes– Google Chrome and FireFox 2018 | Yes- Google Chrome and FireFox 2015 |
| Software will support import of ECG data formats. | Yes- JSON | Yes- GVX, MIT, RES, SCP |
| Interval Measurement | Yes - manual | Yes - automated |
| Beat Caliper, Manual tool to place six vertical | Yes | Yes |
{6}------------------------------------------------
| lines and adjust<br>beat calipers. | | |
|----------------------------------------------------------------|-----|------------------------------------------------------------------------|
| Horizontal<br>Caliper Heart<br>Rate Averaging,<br>Manual tool. | Yes | No - Bioflux software does not have<br>this manual horizontal caliper. |
# 7. PERFORMANCE TESTING
The Bioflux Software II device was tested and complies with AAMI EC11, AAMI EC38, IEC60601-2-25 and IEC60601-2-47 standards. The Bioflux Software II was verified in both of its operating environments of Firefox and Google Chrome. Verification activities related to the device modification were performed on the applicant device, and the predetermined acceptance criteria were met in all cases. The activities included scenario validations, beat marker confirmation testing, and device functional testing.
## 8. CONCLUSIONS
The conclusions drawn from the indications for use and testing demonstrates that Bioflux Software II exhibits comparable indications for use, technological, and design characteristics to the predicate (Bioflux Software). Based on this, the Bioflux Software II is as safe, and effective, and performs as well as the legally marketed device predicate. The Bioflux Software II is substantially equivalent to the predicate device.
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.