The V-Patch Cardiac Monitor is intended to record, transfer and store single-channel electrocardiogram (ECG) data via Bluetooth transmission to Bluetooth enabled devices. The monitor is intended for use by healthcare professionals, patients with known or suspected heart conditions and health-conscious individuals. The ECG data is intended to supplement other patient data and is not intended for automated analysis. The device has not been tested and it is not intended for pediatric use.
Device Story
V-Patch Cardiac Monitor is a continuous, single-channel ECG recording device for remote monitoring. Device consists of a battery-powered electronic unit used with off-the-shelf disposable medical-grade gel electrodes applied to the upper left chest. Device automatically activates upon skin contact; records ECG signals; transmits data via Class II Bluetooth to a Bluetooth-enabled computing or mobile device. Intended for use by healthcare professionals, patients, and health-conscious individuals. Output is raw ECG data for review by healthcare professionals to supplement other patient data; device provides no automated ECG analysis, alarms, or real-time viewing. Benefits include facilitating long-term ambulatory ECG monitoring for cardiac assessment.
Clinical Evidence
No clinical testing was performed. Substantial equivalence was demonstrated through non-clinical bench testing, including biocompatibility (ISO 10993-1), electromagnetic compatibility (IEC 60601-1-2), electrical safety (AAMI/ANSI ES60601-1), and ambulatory ECG performance testing (ANSI/AAMI/IEC 60601-2-47).
Technological Characteristics
Single-channel ECG monitor; 250 Hz sampling rate; Class II Bluetooth connectivity. Uses off-the-shelf disposable gel electrodes. Battery-powered, reusable electronic unit. Complies with ISO 10993-1, IEC 60601-1-2, AAMI/ANSI ES60601-1, and ANSI/AAMI/IEC 60601-2-47. Software level of concern: Moderate.
Indications for Use
Indicated for adult patients with known or suspected heart conditions and health-conscious individuals for recording, transferring, and storing single-channel ECG data. Not for pediatric use.
Regulatory Classification
Identification
A telephone electrocardiograph transmitter and receiver is a device used to condition an electrocardiograph signal so that it can be transmitted via a telephone line to another location. This device also includes a receiver that reconditions the received signal into its original format so that it can be displayed. The device includes devices used to transmit and receive pacemaker signals.
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October 20, 2022
Shandong CoreCare Technology Limited % Prabhu Raghavan Principal Consultant Mdar, LLC. 1790 Montemar Way San Jose. California 95125
Re: K222842
Trade/Device Name: V-Patch™ Cardiac Monitor Regulation Number: 21 CFR 870.2920 Regulation Name: Telephone Electrocardiograph Transmitter And Receiver Regulatory Class: Class II Product Code: DXH Dated: September 20, 2022 Received: September 20, 2022
Dear Prabhu Raghavan:
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
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statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) 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 medical devices and radiation-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,
for
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
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### Indications for Use
510(k) Number (if known)
K22842
Device Name V-Patch™ Cardiac Monitor
#### Indications for Use (Describe)
The V-Patch Cardiac Monitor is intended to record, transfer and store single-channel electrocardiogram (ECG) data via Bluetooth transmission to Bluetooth enabled devices. The monitor is intended for use by healthcare professionals, patients with known or suspected heart conditions and health-conscious individuals. The ECG data is intended to supplement other patient data and is not intended for automated analysis. The device has not been tested and it is not intended for pediatric use.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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#### 510(k) Summary for K222842
Prepared in accordance with the requirements of 21 CFR 807.92
# Submitter Information [807,92(a)(1)]
| Submitter Information [807.92(a)(1)]<br>Sponsor/Applicant | Cao Cheng<br>Chief Executive Officer<br>Shandong CoreCare Technology Limited<br>Suite 801-2, Incubator Phase I, Innovation Valley<br>Jinan High-Tech Industrial Development Zone, Jinan, Shandong<br>China |
|----------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | Phone: +86-18610294350<br>Email: cao.cheng@ecordum.cn |
| Submission Correspondent | Prabhu Raghavan<br>Principal Consultant, MDQR, LLC<br>Phone: 408-316-5707<br>Email: prabhu@mdqr.solutions |
| Secondary Correspondent,<br>US Agent and Partner to<br>Sponsor | Darin Slack<br>Chief Executive Officer<br>Versa Cardio, Inc.<br>255 E. Rincon, Suite 210<br>Corona, CA 92879 |
| | Phone: 855-329-5794<br>Email: darin@versacardio.com |
| Date Prepared | September 19, 2022 |
| Device Information [807.92(a)(2)] | |
| Trade Name | V-Patch™ Cardiac Monitor |
| Common Name | Transmitters and receivers, electrocardiograph, telephone |
| Classification | 21 CFR§870.2920 |
| Device Class | II |
| Product Code<br>Classification Panel | DXH<br>Cardiovascular |
## Predicate Information [807.92(a)(3)]
K193296, eCordum™ Cardiac Monitor, eCordum Inc. Predicate(s)
#### Device Description [807.92(a)(4)]
The V-Patch Cardiac Monitor ("V-Patch CM") is a continuous electrocardiogram (ECG) recording device to record, store, and transfer single channel ECGs and is designed for remote ECG data collection and remote monitoring. The device is in the form of an ECG patch that records ECG signals and transmits directly to a Bluetooth™ enabled device. The V-Patch CM
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has Bluetooth module for transferring ECG data from V-Patch CM to a Bluetooth enabled computing or mobile devices to be accessible to healthcare professionals.
The V-Patch CM includes a battery powered electronic unit that is used with off-the-shelf (OTS) disposable medical grade gel electrodes for long term monitoring. The adhesive electrodes should be replaced by the user every 24 hours or when it no longer adheres to skin. The V-Patch CM is a prescription use device and the recorded ECG data is intended to be used with other patient data. The device does not provide any automated ECG analysis.
### Indications for use [807.92(a)(5)]
The V-Patch Cardiac Monitor is intended to record, transfer and store single-channel electrocardiogram (ECG) data via Bluetooth transmission to Bluetooth enabled devices. The monitor is intended for use by healthcare professionals, patients with known or suspected heart conditions and health-conscious individuals. The ECG data is intended to supplement other patient data and is not intended for automated analysis. The device has not been tested and it is not intended for pediatric use.
#### Substantial Equivalence
The V-Patch CM substantially equivalent to its legally marketed predicate device, eCordum Cardiac Monitor, K193296 (eCordum Inc). The subject V-Patch CM is identical in form and function to the predicate device, using the same components, materials, and software as the predicate and is manufactured by Shandong CoreCare Technology Limited using the same manufacturing process. The two devices have identical intended use, physical characteristics, and technological characteristics.
| Feature | V-Patch Cardiac Monitor<br>(K222842)<br>(Subject Device) | eCordum Cardiac Monitor<br>(K193296)<br>(Predicate Device) |
|----------------|------------------------------------------------------------------|------------------------------------------------------------|
| Intended Use | Ambulatory, long-term, continuous<br>ECG monitoring | Same |
| Product Code | DXH, Telephone<br>electrocardiograph transmitter and<br>receiver | Same |
| Regulation | 21 CFR§870.2920 | Same |
| Classification | II | Same |
| | Comparison of Technological Characteristics with the Predicate Device [807.92(a)(6)) | | | |
|--|--------------------------------------------------------------------------------------|--|--|--|
| | | | | |
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| Feature | V-Patch Cardiac Monitor<br>(K222842)<br>(Subject Device) | eCordum Cardiac Monitor<br>(K193296)<br>(Predicate Device) |
|---------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Indications for Use | The V-Patch Cardiac Monitor is<br>intended to record, transfer and<br>store single-channel<br>electrocardiogram (ECG) data via<br>Bluetooth transmission to<br>Bluetooth enabled devices. The<br>monitor is intended for use by<br>healthcare professionals, patients<br>with known or suspected heart<br>conditions and health-conscious<br>individuals. The ECG data is<br>intended to supplement other<br>patient data and is not intended for<br>automated analysis. The device has<br>not been tested and it is not<br>intended for pediatric use. | The eCordum Cardiac Monitor is<br>intended to record, transfer and<br>store single-channel<br>electrocardiogram (ECG) data via<br>Bluetooth transmission to<br>Bluetooth enabled devices. The<br>monitor is intended for use by<br>healthcare professionals, patients<br>with known or suspected heart<br>conditions and health-conscious<br>individuals. The ECG data is<br>intended to supplement other<br>patient data and is not intended for<br>automated analysis. The device has<br>not been tested and it is not<br>intended for pediatric use. |
| Indicated Use Method | Apply patch on upper left chest | Same |
| Type of use | Rx only | Same |
| Alarms, arrhythmia<br>detection | No | Same |
| Population | Adult | Same |
| Anatomical Sites | Chest | Same |
| Electrodes | Attachable standard ambulatory<br>OTS electrodes with conductive<br>gel. | Same |
| Single Use/Reusable | Electronic unit is reusable.<br>OTS electrodes are single use | Same |
| ECG and Events Storage | Transmit ECG data to a Bluetooth<br>enabled device. | Same |
| Real time ECG View | No | Same |
| Sampling Rate | 250 Hz | Same |
| Activation | Automatic turn on upon skin<br>contact<br>Mobile app | Same |
| Feature | V-Patch Cardiac Monitor<br>(K222842)<br>(Subject Device) | eCordum Cardiac Monitor<br>(K193296)<br>(Predicate Device) |
| Transmission method | Class II Bluetooth | Same |
| Power Supply | Replaceable battery | Same |
| Software Level of<br>Concern | Moderate | Same |
# Comparison of Technological Characteristics with the Predicate Device [807.92(a)(6)]
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## Comparison of Technological Characteristics with the Predicate Device [807.92(a)(6)]
## Performance Data [807.92(b)]
All necessary testing was conducted on V-Patch Cardiac Monitor to support a determination of substantial equivalence to the predicate device.
# Nonclinical Testing Summary [807.92(b)(1)]
The V-Patch CM was successfully passed its nonclinical testing activities included:
- Biocompatibility evaluation per ISO 10993-1 Fourth edition 2009 Biological evaluation . of medical devices - Part 1: Evaluation and testing within a risk management process.
- . Electromagnetic Compatibility per IEC 60601-1-2 Edition 4.0 2014-02, Medical electrical equipment - part 1-2: General requirements for basic safety and essential performance - Collateral standard: Electromagnetic disturbances - requirements and tests.
- . Electrical Safety per AAMI/ANSI ES60601-1:2005/(R) 2012 and A1:2012, c1:2009/(r) 2012 and a2:2010/(r) 2012 (consolidated text) Medical Electrical Equipment - Part 1: General requirements for basic safety and essential performance
- 0 Ambulatory ECG testing per ANSI/AAMI/IEC 60601-2-47:2012 (60601-2-47); Medical electrical equipment – Part 2-47: Requirements for the safety, including essential performance, of ambulatory electrocardiographic systems
- Software verification and validation testing .
# Clinical Testing Summary [807.92(b)(2)]
No clinical testing is required to demonstrate substantial equivalence to the predicate eCordum Cardiac Monitor (K193296).
# Conclusions [807.92(b)(3)]
The V-Patch CM has a same intended use, physical characteristics, and technological characteristics as the predicate. The minor difference between the devices do not raise different questions of safety or effectiveness. Therefore, the V-Patch CM is substantially equivalent to its predicate device, the eCordum Cardiac Monitor (K193296).
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.