Master Caution Device (MCD) is intended to condition an electrocardiographic signal, so that it can be transmitted digitally via Bluetooth technology and cell-phone or communication device to a remote location. The Master Caution Device (MCD) is designed to be used by a patient to transmit a 12 lead ECG, posture and motion , respiration and skin temperature (IR) signals, in near real-time to enable review at a physician's office, hospital or other remote medical receiving center. Master Caution Device (MCD) target population is adults above the age of 21.
Device Story
Personal, hand-held, battery-powered ECG device; connects to 10 standard electrodes for 12-lead ECG acquisition. Device includes embedded processor, accelerometers, respiration sensor, and IR skin temperature sensor. Inputs: physiological signals (ECG, motion, respiration, temperature). Transformation: signal conditioning and digitization; transmission via Bluetooth to external communication device (cellphone, computer, modem). Output: near real-time data forwarded via Wi-Fi/cellular to remote medical receiving center. Used by patients; reviewed by physicians/medical staff. Output enables remote monitoring and clinical decision-making regarding cardiac status and patient activity. Benefits: facilitates remote patient management and timely professional review.
Clinical Evidence
No clinical data. Substantial equivalence established via bench testing and reliance on existing clinical literature for predicate technologies.
Technological Characteristics
Hand-held, battery-powered; 12-lead ECG configuration via 10 electrodes. Sensors: ECG, accelerometer (posture/motion), respiration, IR (skin temperature). Connectivity: Bluetooth Class II. Standards: IEC 60601-1, IEC 60601-1-2, IEC 60601-2-25, ISO 62304, ISO 14971, ISO 15223-1, ASTM D4169.
Indications for Use
Indicated for adults >21 years old for transmission of 12-lead ECG, posture, motion, respiration, and skin temperature signals to remote medical centers for professional review.
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.
Hospira vital Signs wireless monitoring system (K090610)
Submission Summary (Full Text)
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
February 17, 2015
Healthwatch Ltd. % Yoram Levy Osite General Manager 31 Haavoda Street Binyamina, 30500 IL
Re: K142476 Trade/Device Name: Master Caution Device (MCD) Regulation Number: 21 CFR 870.2920 Regulation Name: Telephone Electrocardiograph Transmitter and Receiver Regulatory Class: Class II Product Code: DXH Dated: December 31, 2014 Received: January 7, 2015
Dear Yoram Levy,
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.
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 devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in
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the quality systems (OS) 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/ResourcesforYou/Industry/default.htm. 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
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 yours,
# Melissa A. Torres -S
For Bram 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) K142476
Device Name Master Caution Device (MCD™)
#### Indications for Use (Describe)
Master Caution Device (MCD) is intended to condition an electrocardiographic signal, so that it can be transmitted digitally via Bluetooth technology and cell-phone or communication device to a remote location. The Master Caution Device (MCD) is designed to be used by a patient to transmit a 12 lead ECG, posture and motion , respiration and skin temperature (IR) signals, in near real-time to enable review at a physician's office, hospital or other remote medical receiving center. Master Caution Device (MCD) target population is adults above the age of 21.
Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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Image /page/3/Picture/0 description: The image shows the logo for Healthwatch Technologies LTD. The word "HEALTHWATCH" is written in a combination of green and red letters, with the "HEALTH" portion in green and the "WATCH" portion in red. To the right of the word "HEALTHWATCH" is a green circle. Below the word "HEALTHWATCH" is the phrase "TECHNOLOGIES LTD" in a smaller, gray font.
# 510(K) SUMMARY
# HealthWatch Master Caution Device (MCDTM)
# 510(k) Number K142476
| Applicant's Name: | HealthWatch Ltd.<br>6 Hasadna Street<br>Kfar Saba, Israel 4442405<br>Tel: (972) 77 543 4541<br>Fax: (972) 9 955 0615 |
|------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Yoram Levy, Qsite<br>31 Haavoda Street<br>Binyamina, Israel 30500<br>Tel (972)4-638-8837; Fax (972)4-638-0510<br>Yoram@qsitemed.com |
| Trade Name: | Master Caution Device MCDTM |
| Summary<br>Preparation Date: | February 09, 2015 |
| Classification: | Name: Telephone electrocardiograph transmitter and receiver<br>Product Code: DXH<br>Regulation No: 21 CFR 870.2920<br>Class: II<br>Classification Panel: Cardiovascular |
#### Device Description:
The HealthWatch Master Caution Device (MCD) is a personal, hand-held battery powered, ECG device that can be connected to any approved and market cleared, ten standard ECG electrodes, configuring a 12-lead ECG device.
The MCD is a miniature ECG device with an embedded processor containing data acquisition, data storage, data processing accelerometers, respiration, skin temperature (IR) and BT (Bluetooth) capabilities. The HealthWatch Master Caution Device (MCD) acquires ECG data via the connected electrodes. The HealthWatch Master Caution Device (MCD) transmits the data in
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Image /page/4/Picture/0 description: The image shows the logo for Healthwatch Technologies LTD. The word "HEALTHWATCH" is written in a combination of green and red letters. The word "HEALTH" is in green, and the word "WATCH" is in red. There is a green circle and a red circle overlapping each other to the right of the word "WATCH". Below the word "HEALTHWATCH" is the phrase "TECHNOLOGIES LTD" in a smaller font.
near real time to a suitable Bluetooth communication device for forwarding to a remote location for professional review.
A communication device is defined as any device that is capable of receiving the ECG data via Bluetooth and forwarding it via WIFI or cellular network (3G/4G). Communication devices can be cellphones, computers or other dedicated communication modems.
#### Intended Use Statement:
Master Caution Device (MCD) is intended to condition an electrocardiographic signal, so that it can be transmitted digitally via Bluetooth technology and cell-phone or communication device to a remote location. The Master Caution Device (MCD) is designed to be used by a patient to transmit a 12 lead ECG, posture and motion , respiration and skin temperature (IR) signals, in near real-time to enable review at a physician's office, hospital or other remote medical receiving center. Master Caution Device (MCD) target population is adults above the age of 21.
### Predicate Device:
| Device Name | 510k No | Date of Clearance |
|---------------------------------------------------|---------|-------------------|
| SHL Smartheart | K113514 | February 22, 2012 |
| MotionWatch and Pro-Diary | K132764 | January 21, 2014 |
| Avivo Mobile Patient<br>Management System | K083287 | February 3, 2009 |
| Hospira vital Signs wireless<br>monitoring system | K090610 | December 22, 2009 |
Substantial equivalence to the following predicate devices is claimed:
# Substantial Equivalence to Predicate Device
The Health Watch Master Caution Device (MCD) utilizes the same transmission method using Bluetooth module and communication device, as its predicate devices.
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Image /page/5/Picture/0 description: The image is a logo for Healthwatch Technologies LTD. The word "HEALTHWATCH" is written in a combination of green and red letters. The word "HEALTH" is in green, and the word "WATCH" is in red, with a green circle to the right of the word. Below the word "HEALTHWATCH" is the phrase "TECHNOLOGIES LTD" in a smaller, gray font.
Any minor differences in the human interface and features do not raise any new questions of safety and effectiveness issues, as verified by performance testing.
Results of tests and validations, performed with the proposed Health Watch Master Caution Device (MCD) demonstrates that substantial equivalence has been determined, without raising any new safety and/or effectiveness concerns.
Therefore, the HealthWatch Master Caution Device (MCD) is substantially equivalent to its predicate device.
Follows is a comparison of the technology features:
| Feature | HealthWatch<br>Master Caution<br>Device | SHL<br>Smartheart<br>(K113514) | AVIVO Mobile<br>patient<br>management<br>system<br>(K083287) | Hospira vital<br>Signs wireless<br>monitoring<br>system<br>(K090610) | MotionWatch<br>(K132764) |
|-----------------------------------------|-----------------------------------------|--------------------------------|--------------------------------------------------------------|----------------------------------------------------------------------|--------------------------|
| Physiological<br>parameters<br>transfer | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Bluetooth<br>class | Class II | Class II | Class II | Class II | Class II |
| ECG<br>measures | Yes | Yes | Yes | Yes | N/A |
| Acceleration<br>sensor | Yes | N/A | Yes | N/A | Yes |
| Respiration<br>sensor | Yes | N/A | Yes | N/A | N/A |
| Skin<br>temperature<br>sensor | Yes | N/A | Yes | N/A | N/A |
### Performance Standards:
The Healthwatch Master Caution Device (MCD™) device complies with the following standards:
IEC 60601-1 Medical Electrical Equipment-Part 1: General . Requirements for Safety. Collateral Standard: Safety Requirements for Medical Electrical Systems.
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Image /page/6/Picture/0 description: The image is a logo for Healthwatch Technologies LTD. The word "HEALTHWATCH" is written in green and red, with the "HEALTH" portion in green and the "WATCH" portion in red. There is a green and red circle to the right of the word. Underneath the word is the phrase "TECHNOLOGIES LTD" in a smaller, gray font.
IEC 60601-1-2 Medical Electrical Equipment Part 1-2: Collateral Standard: Electromagnetic Compatibility – Requirements and Tests.
IEC 60601-2-25 Medical electrical equipment - Part 2-22: . Particular requirements for basic safety and essential performance of surgical, cosmetic, therapeutic and diagnostic laser equipment
- · ISO 62304 Medical device software- Software life cycle processes
- · ISO 14971 Medical Devices- Application of risk management to medical devices
- · ISO 15223-1 Medical Devices- Symbols to be used with medical device labels, labeling and information to be supplied- Part 1.
- · ASTM D4169 Standard Practice for Performance Testing of Shipping Containers and Systems
### Performance Bench Tests
Bench testing demonstrated that the HealthWatch Master Caution Device (MCD™) is as safe and effective as the cleared predicate device.
# Summary of Pre-Clinical and clinical study
The HealthWatch Master Caution Device (MCD™) implies the exact same intended use, clinical indication and technology as its predicate device. The substantial equivalence o fthe HealthWatch Master Caution Device (MCD™) is shown by the predicate devices using the same parameters. Due to the comprehensive clinical studies already performed by the predicate and other devices, published in scientific literature, and since the performance testing shows its substantial equivalence, HealthWatch believes that animal and clinical studies are not necessary to determine the substantial equivalence of the
HealthWatch Master Caution Device (MCDTM)
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HealthWatch Master Caution Device (MCD™) 510k Submission
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.