The device is intended for home use by users who might have transient symptoms that may suggest cardiac conduction abnormity or by users who want to monitor the cardiac function for HOME HEALTH CARE from Lead I ECG signal. ECG acquisition and transmission is voluntary and mutually activated by the user. The intended users are adults above 20 years old. This device is not intended for use as precisely diagnostic tool. This device is also not intended for recording and transmission of user's ECG signal simultaneously. This device provides a parameter of heart rate variability (HRV) in RR interval which is only mathematical analysis and is not intended to produce any interpretation of those measurements or any kind of diagnosis. The device detects the appearance of irregular heart beat (IHB) during measurement, and gives a warning signal with the reading once the irregular heartbeat is detected. Users with implanted pacemaker are not recommended to use this device.
Device Story
Handheld, dry-electrode ECG monitor for home use; records Lead I ECG signals via thumb-press electrodes or optional auxiliary external electrode. Device records 30-second segments; stores last 15 seconds in internal memory. Measures Heart Rate (HR), ST segment, and QRS interval; displays on LCD. Detects irregular heartbeats (IHB) and provides warning signal. Calculates Heart Rate Variability (HRV) via RR interval analysis. Data transferable to PC via USB for printing and long-term tracking. Operated by patient; intended for routine health checks or transient symptom monitoring. Not a diagnostic tool; not for simultaneous transmission. Benefits include convenient, affordable, personalized cardiac function tracking.
Clinical Evidence
Bench testing only. No clinical validation performed. Performance verified using MIT-IBH database and simulators. Conforms to IEC 60601-1, IEC 60601-1-2, IEC 60601-2-25, IEC 60601-2-47, and IEC 60601-2-51.
Technological Characteristics
Handheld ECG monitor; dry electrode sensing; internal battery powered. Dimensions/form factor: handheld. Connectivity: USB for PC data transfer. Standards: IEC 60601-1 (safety), IEC 60601-1-2 (EMC), IEC 60601-2-25, IEC 60601-2-47, IEC 60601-2-51 (performance). Software: embedded firmware for signal processing and parameter calculation.
Indications for Use
Indicated for adults >20 years old for home health care monitoring of Lead I ECG signals. Intended for users with transient symptoms suggesting cardiac conduction abnormality or for routine cardiac function monitoring. Contraindicated for users with implanted pacemakers.
Regulatory Classification
Identification
An electrocardiograph is a device used to process the electrical signal transmitted through two or more electrocardiograph electrodes and to produce a visual display of the electrical signal produced by the heart.
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Image /page/0/Picture/1 description: The image shows the text "K050620 p.1/3" in a handwritten style. The text appears to be a code or identifier, possibly related to document management or archiving. The "p.1/3" likely indicates that this is page 1 of a 3-page document. The handwriting is clear and legible, making the text easily readable.
Image /page/0/Picture/2 description: The image shows the logo for DailyCare BioMedical. The logo features a stylized figure of a person with outstretched arms above the letter "D". To the right of the figure is the text "DailyCare" in a bold, sans-serif font. Below "DailyCare" is the word "BioMedical" in a smaller font.
ReadMyHeart (Model RMH 3.0) Premarket Notification
# 510(K) SUMMARY
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA and 21 CFR §807.92
| 1.0 Submitter's Indentification: | |
|----------------------------------|--------------------------------------------|
| Submitter's Name: | DailyCare BioMedical Inc. |
| Address: | 8F, 25-3, Ji-Lin Road, Chungli 320, Taiwan |
| TEL: | +886-3-2621688 |
| FAX: | +886-3-2617688 |
| Contact: | Mr. Daniel J. H. Chang |
#### 2.0 Device Name:
| Trade Name: | ReadMyHeart - Model RMH3.0 |
|-----------------------|-------------------------------------------------------------------------------------------------|
| Common Name: | Handheld ECG monitor |
| Classification Name: | Electrocardiograph (per 21 CFR 870.2340) |
| 3.0 Classification: | Class II |
| 4.0 Predicate Device: | This predicate device is ReadMyHeart (RMH2.0, k042814)<br>marketed by DailyCare BioMedical Inc. |
#### 5.0 Intended Use:
The device is intended for home use by users who might have transient symptoms that may suggest cardiac conduction abnormity or by users who want to monitor the cardiac function for HOME HEALTH CARE from Lead I ECG signal.
ECG acquisition and transmission is voluntary and mutually activated by the user. The intended users are adults above 20 years old.
This device is not intended for use as precisely diagnostic tool. This device is also not intended for recording and transmission of user's ECG signal simultaneously.
This device provides a parameter of heart rate variability (HRV) in RR interval which is only mathematical analysis and is not intended to produce any
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Image /page/1/Picture/1 description: The image contains a logo for DailyCafe BioMedical. The logo features a stylized letter D with a person figure inside the curve of the D. To the right of the D is the text "DailyCafe" in a bold font, with "BioMedical" in a smaller font underneath. To the right of the logo is the word "ReadM".
ReadMyHeart (Model RMH 3.0) Premarket Notification
interpretation of those measurements or any kind of diagnosis.
The device detects the appearance of irregular heart beat (IHB) during measurement, and gives a warning signal with the reading once the irregular heartbeat is detected.
Users with implanted pacemaker are not recommended to use this device.
#### 6.0 Device Description:
ReadMyHeart is a handheld, personalized use, dry electrode and affordable ECG recording device that records user's cardiac functions for daily health check. It takes ECG signals of users with thumbs press on electrode at ReadMyHeart gently. The device will record user's ECG signal for 30 seconds, and automatically stores the last 15 seconds signals into the build-in memory, while three parameters measured, mainly, Heart Rate (HR), ST segment and QRS interval of cardiac ECG signal, displays on LCD of the device.
The device also detects the appearance of irregular heart beat (IHB) during measurement, and gives a warning signal with the reading once the irregular heartbeat is detected.
This device provides a parameter of heart rate variability (HRV) in RR interval which is only mathematical analysis when recording the signal for 180 seconds. The HRV is not intended to produce any interpretation of those measurements or any kind of diagnosis.
User may also record ECG signals optionally through auxiliary external electrode provided separately, if thumb pressings are inconvenient for any reason. The data stored in the memory can be transferred to Personal Computer via USB. With friendly GUI software provided separately, data stored in ReadMyHeart can be printed for analysis, and for long-term tracking. ReadMyHeart is powered by internal battery source. Users may activate the device to acquire ECG Lead I information voluntarily and mutually.
Furthermore, ReadMyHeart (Model RMH3.0) is modified and has generally the same design from DailyCare BioMedical Inc.'s prior device – ReadMyHeart (RMH2.0, K042814).
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Image /page/2/Picture/1 description: The image shows the logo for DailyCare BioMedical. The logo features a stylized letter "D" with a human figure integrated into the design. The text "DailyCare" is written in a stylized font, with "BioMedical" appearing in smaller letters below it.
ReadMyHeart (Model RMH 3.0) Premarket Notification
### 7.0 Performance Summary:
In terms of operating specification, Safety & EMC requirements, the device conforms to applicable standards include
* All Safety test according to IEC 60601-2-25 & IEC 60601-1,
- * EMC tests according to IEC 60601-1-2
- * Performance tests according to IEC 60601-2-47 and IEC 60601-2-51 voluntarily.
- * Environment tests are tested to comply with the safety requirements. Furthermore, the performance is tested with MIT-IBH database and simulators and meets the requirements.
## Discussion of Clinical Test performed: 8.0
Since the ECG parameters algorithm and hardware design in this device is exactly the same as in the predicate device, ReadMyHeart (RMH2.0, K042814), no clinical validation for ECG parameters is required. Instead, we conducted a simulator and MIT database comparison study for the function of irregular heartbeat detection. Furthermore, HRV is only the mathematical analysis of heart beat and is not shown safe and effectiveness and has not been approved by FDA for a specific clinical diagnosis in any devices, so that is for reference only, therefore, no clinical validation is required for HRV.
#### 9.0 Conclusions:
ReadMyHeart (Model RMH3.0) is a modification from predicate device ReadMyHeart (RMH2.0, K042814). It has generally the same technological characteristics and intended use. Moreover, bench testing contained in this submission supplied demonstrates that any differences in their technological characteristics do not raise and new questions of safety or effectiveness. Thus, the ReadMyHeart (Model RMH 3.0) is substantially equivalent to the predicate devices.
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Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JUL 1 4 2005
0 5 10 15
Dailycare Biomedical, Inc. c/o Mr. Daniel J. H. Chang Senior Engineer 8F, 25-3, Ji-Lin Road Chungli 320 TAIWAN
Re: K050620
ReadMyHeart model RMH 3.0 Regulation Number: 21 CFR 870.2340 Regulation Name: Electrocardiograph Regulatory Class: Class II (two) Product Code: DPS Dated: June 29, 2005 Received: June 29, 2005
Dear Mr. Chang:
We have reviewed your Section 510(k) premarket notification of intent to market the device We have reviewed your Section 5 IQC) premanted is substantially equivalent (for the indications
referenced above and have determined the consected in interstate referenced above and have determined the devices marketed in interstate for use stated in the enclosure) to legally manced producal Device Amendments, or to
commerce prior to May 28, 1976, the enactment date of the Federal Food Drug. commerce prior to May 28, 1970, the chacinent and othe provisions of the Federal Food, Drug, devices that have been reclassified in accordance while approval application (PMA).
and Cosmetic Act (Act) that do not require approval of a provisions of the Act. The and Cosmetic Act (Act) that do not require approval controls provisions of the Act. The Act. The Act. The You may, therefore, market the device, subject of the genirst for annual registration, listing of
general controls provisions of the Act include requirements misbranding and general controls provisions of the Act mendo requirements
devices, good manufacturing practice, labeling, and prohibitions against mishranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it If your device is classified (see above) mo existing major regulations affecting your device can
may be subject to such additional controls. Existing major regulations allec may be subject to such additional colubis. Existing migor regal to 898. In addition, FDA may
be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In be found in the Code of I cacial regarations).
publish further announcements concerning your device in the Federal Register.
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Page 2 – Mr. Daniel J. H. Chang
Please be advised that FDA's issuance of a substantial equivalence determination does not mean I loast be advisou that I Dr intribution that your device complies with other requirements of the Act that i DA has made a coulations administered by other Federal agencies. You must of any I cateral statures and registements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set CFR Part 6077, and if a regulation (21 CFR Part 820); and if applicable, the electronic form in the quany by by count (Sections 531-542 of the Act); 21 CFR 1000-1050. product radiation of to begin marketing your device as described in your Section 510(k) This letter wifi anon yourse of substantial equivalence of your device of your device to a legally prematics notification. "The sclassification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please If you desire specific aarroliance at (240) 276-0295 Also, please note the regulation entitled, eoniation of Office or Course to premarket notification" (21CFR Part 807.97) you may obtain. Whisoralianing of responsibilities under the Act may be obtained from the Other general mironmation and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely yours,
Bhimmofor
Brand D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known): ____________________________________________________________________________________________________________________________________________________
Device Name: _________________________________________________________________________________________________________________________________________________________________
(DailyCare BioMedical Inc.)
Indications for Use:
atten is a personal single lead Electrocardiograph monitor for home health care use. The device is intended for self-testing by users who might experience transient symptoms that may suggest cardiac conduction abnormity or by users whenever desired as routine recordings may begg and mutually activated by the user and the intended users are adults above 20 years oid.
The user is normally not required to apply electrode on body. Two electrodes integrated within the device are provided. The user has to press his/her thumbs on the electrodes in order to record the ECG signal. The users may also record the signals optionally through auxiliary rosera the =================================================================================================================================================================== recommended to use auxiliary external electrode for HRV analysis. I
The recorded data can be downloaded to Personal Computer via USB interface port. This device is not intended for use as precisely diagnostic tool. This device is also not intended for recording and transmission of user's ECG signal simultaneously. Users with implanted pacemaker are not recommended to use this device.
shirts device provides a parameter of heart rate variability (HRV) in RR interval which is only mathematical analysis and is not intended to produce any interpretation of those measurements or any kind of diagnosis. The device detects the appearance of irregular heart beat (IHB) during measurement, and gives a warning signal with the reading once the irregular heartbeat is detected.
Over-The-Counter Use _ Prescription Use _____________________________________________________________________________________________________________________________________________________________ AND/OR (21 CFR 801 Subpart C) (Part 21 CFR 801 Subpart D) (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Alummer
scular Devices 510(k) Number_
Page _ 1_ of _1
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.