The zensor monitoring device is a small, lightweight, wearable, non-invasive, re-chargeable battery operated system connected to an electrode accessory (single-use disposable Intelesens zensor Electrode Array) which in turn is in contact with the patient's body. The device is to be used in the home environment to provide clinicians with patient physiological data. The zensor monitoring system provides full disclosure ECG and cardiac event monitoring for adult patients. The zensor monitoring system displays ECG and respiration waveforms from the zensor monitoring device. The system monitors the following configurable physiological parameters: Heart Rate and Respiration Rate, as well as key cardiac arrhythmias, and a patient activated recording. The zensor monitoring system has the option to store full disclosure ECG, Respiration and accelerometer data and/or wirelessly transmit pre-defined event alerts to the Intelesens zensoronline system for review by healthcare practitioners. All physiological data stored on the device can be imported for viewing on Intelesens zensor+ (Ambulatory Full Disclosure ECC and Event Viewer) for later analysis by a clinician.
Device Story
Zensor is a wearable, battery-operated ECG and respiratory monitor for home use. It utilizes a 3-lead disposable electrode array with conductive gel to acquire ECG and respiration signals. A 3-axis MEMS accelerometer tracks patient activity. The device performs on-board arrhythmia detection (asystole, VF, bradycardia, AF, tachycardia) and stores full-disclosure data. Data is transmitted via Wi-Fi to the Zensoronline system or downloaded to Zensor+ PC software for clinician review. Clinicians use the output to monitor cardiac status and identify arrhythmias, facilitating clinical decision-making for adult patients. The system includes a dedicated charging dock; charging is disabled while the device is connected to a patient.
Clinical Evidence
Bench testing only. Verification and validation testing included hardware verification, system validation, and compliance with AAMI/ANSI ES 60601-1, IEC 60601-1-2, AAMI EC57 (cardiac rhythm/ST-segment algorithm performance), AAMI EC12 (electrodes), AAMI/ANSI IEC 60601-2-47 (ambulatory ECG systems), and IEC 60601-1-11 (home healthcare environment). Risk analysis and mitigation were performed per ISO 13485 quality system standards.
Technological Characteristics
Wearable monitor with 3-lead ECG (360 Hz, 12-bit), respiration (120 Hz, 12-bit), and 3-axis MEMS accelerometer (100 Hz). Powered by 3.7V Li-Polymer battery. Connectivity via Wi-Fi 802.11 b/g (50m range). Dimensions: 96x71x19mm; Weight: 85g; IP22 rating. Electrodes conform to AAMI/ANSI EC12. Software includes on-board arrhythmia detection algorithms.
Indications for Use
Indicated for adult patients requiring full disclosure ECG and cardiac event monitoring in a home environment. No contraindications.
Regulatory Classification
Identification
The arrhythmia detector and alarm device monitors an electrocardiogram and is designed to produce a visible or audible signal or alarm when atrial or ventricular arrhythmia, such as premature contraction or ventricular fibrillation, occurs.
Special Controls
*Classification.* Class II (special controls). The guidance document entitled “Class II Special Controls Guidance Document: Arrhythmia Detector and Alarm” will serve as the special control. See § 870.1 for the availability of this guidance document.
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Image /page/0/Picture/1 description: The image shows the seal of the U.S. Department of Health & Human Services. The seal features the department's name in a circular arrangement around a stylized emblem. The emblem consists of a caduceus-like symbol with three figures representing people, symbolizing health and human services.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 2, 2015
Intelesens Limited % Mr. Paul Dryden, President Promedic, Inc. 24301 Woodsage Drive Bonita Springs, Florida 34134-2958
Re: K151027
Trade/Device Name: Zensor System Regulation Number: 21 CFR 870.1025 Regulation Name: Arrhythmia Detector and Alarm (Including ST-Segment Measurement and Alarm) Regulatory Class: Class II (Two) Product Code: MHX Dated: August 21, 2015 Received: August 24, 2015
Dear Mr. Dryden:
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
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Part 807); labeling (21 CFR Part 801); medical device reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/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 vours
Mitchell Stein
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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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
# Indications for Use
510(k) Number (if known)
K151027
Device Name
zensor System Indications for Use (Describe)
The zensor monitoring device is a small, lightweight, wearable battery operated system connected to an electrode accessory (single-use disposable Intelesens zensor Electrode Array) which in turn is in contact with the patient's body.
The device is to be used in the home environment to provide clinicians with patient physiological data.
The zensor monitoring system provides full disclosure ECG and cardiac event monitoring for adult patients.
The zensor monitoring system displays ECG and respiration waveforms from the reserver. The system monitors the following configurable physiological parameters: Heart Rate, as well as key cardiac arrhythmias, and a patient activated recording.
The zensor monitoring system has the option to store full disclosure ECG. Respiration and accelerometer data and/or wirelessly transmit pre-defined event alerts to the Intelesens zensoronine system for review by healthcare practitioners. All physiological data stored on the device can be imported for viewing on Intelesens zensor+ (Ambulatory Full Disclosure ECG and Event Viewer) for later analysis by a clinician.
Type of Use (Select one or both, as applicable)
X | Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
# PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON A SEPARATE PAGE IF NEEDED.
#### FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
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| Premarket Notification 510(k)<br>Section 5 - 510(k) Summary | Intelesens zensor System |
|-------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | 510(k) Summary<br>April 13, 2015<br>Page 1 of 5 |
| Date Prepared | April 13, 2015 |
| Official Contact: | Patricia Pepper<br>Regulatory Affairs Officer<br>Intelesens Ltd.<br>17 Heron Road<br>Belfast BT3 9LE UK<br>Tel – 44 (0) 28 9073 6801<br>Fax - 44 (0) 28 9099 2433 |
| Proprietary or Trade Name: | zensor System |
| Common/Usual Name: | Physiological Patient Monitor |
| Classification Name: | Arrhythmia detector and alarm (including ST-segment<br>measurement and alarm)<br>MHX, Class II, CFR 870.1025 |
| Predicate Device: | Intelesens Aingeal VS-200 K110015 |
# Device Description:
## zensor System
#### Device
The zensor system includes the following components:
- zensor device a wireless (Wi-Fi) monitoring device .
- . Adherent electrode array
#### Software
- . zensor App for configuration of device settings
- . zensoronline web based monitoring application identical to Canberra cleared in K110015 and K131000 except for name change and support of zensor functionality.
- zensor+, full disclosure and event data viewing PC software .
The zensor also includes a standalone battery charger. Charging does not / cannot occur when the zensor device is connected to a patient.
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# 510(k) Summarv April 13, 2015 Page 2 of 5
## zensor Device
The zensor device monitors physiological parameters and is a wireless, wearable ECG and respiratory monitor. It is a small, battery-operated system comprised of the zensor monitoring unit (a body worn transmitter device), the zensor electrode array, and zensor battery pack. The zensor device is connected to the electrode array via magnetic studs, and the array is positioned as appropriate on the patient's body. The electrode array consists of three patch electrodes containing conductive gel and is self-adhesive and will adhere to the patient's skin. The zensor device communicates to a remote data base using Wi-Fi or mobile hotspot. The rechargeable battery pack contains a rechargeable 3.7V lithium ion battery to power the zensor device. The battery pack is charged using the zensor single bay charging dock. When fully charged the life of the battery pack can be up to three days (dependent on device configuration).
The physiological parameters monitored include ECG and respiration waveforms, heart rate and respiration rate, activity, detection of cardiac arrhythmias (Asystole, Tachycardia, Ventricular Fibrillation, Bradycardia and Atrial Fibrillation) and recording of patient-activated events.
The zensor monitoring device has the option to store full disclosure ECG and respiration data and/or wirelessly transmit pre-defined event alerts or patient-activated recordings to the Intelesens zensor online system for review by healthcare practitioners. All physiological data stored on the device can be downloaded for viewing on Intelesens zensor+ (Ambulatory Full Disclosure ECG and Event Viewer) for later analysis by a clinician.
The device also contains on-board ECG arrhythmia detection algorithms to automatically record and send ECG data on detection of one or more of the following arrhythmias:
- asystole, ●
- . ventricular fibrillation, (VF)
- bradycardia
- atrial fibrillation (AF) ●
- tachycardia ●
Accelerometer: The zensor device incorporates a digital accelerometer MEMS (Micro Electro Mechanical System). This is used to monitor 3-axis acceleration, providing information on patient activity.
#### Electrode Array
- The zensor electrode array is a patient worn adhesive sensor that facilitates the ● acquisition of ECG (3 lead) and respiration signals.
- The array is placed onto the patient following the instructions detailed in the user manual.
- . The array consists of three electrodes and 5 magnetic studs for connecting to the device.
zensor electrode array has the same patient contact materials as the V-Patch electrode (K131000)
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## Premarket Notification 510(k) Section 5 - 510(k) Summary
# 510(k) Summary April 13, 2015 Page 3 of 5 Zensor Specifications:
| Function/Characteristic | Zensor |
|-------------------------|--------------------------------------------------------------------------------------------|
| ECG/Heart Rate | |
| Number of leads | 3 |
| Sample rate | 360 Hz |
| Bandwidth | 0.67 – 40 Hz |
| Resolution | 12-bit |
| Respiration | |
| Sample rate | 120 Hz |
| Resolution | 12-bit |
| Accelerometer | |
| Number of axes | 3 |
| Sensitivity | +/-2G |
| Sample rate | 100 Hz |
| Power | |
| Battery | Rechargeable Varta 3.7V Li Polymer Battery |
| Operational life | 3 days ECG only full disclosure (less for<br>respiration recording and event transmission) |
| Physical Properties | |
| Dimensions | 96mm (H) x 71mm (W) x 19mm (D) |
| Weight | 85g |
| Environmental rating | IP22 |
| Data Transmission | |
| Type | Wi-Fi 802.11 b/g |
| Range | 50 m |
#### zensor App
The zensor App is used to setup and configure the zensor device. It can be navigated using the tabs to view and configure different elements of zensor, including changing monitoring parameters, backing up and copying recorded data, transferring data to zensor online and accessing both zensor online and zensor+ software analysis tools. It communicates to the host computer via USB. Connection can only be made to the device when it is not connected to the patient.
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# 510(k) Summary April 13, 2015 Page 4 of 5
## Indications for Use:
The zensor monitoring device is a small, lightweight, wearable, non-invasive, re-chargeable battery operated system connected to an electrode accessory (single-use disposable Intelesens zensor Electrode Array) which in turn is in contact with the patient's body.
The device is to be used in the home environment to provide clinicians with patient physiological data.
The zensor monitoring system provides full disclosure ECG and cardiac event monitoring for adult patients.
The zensor monitoring system displays ECG and respiration waveforms from the zensor monitoring device. The system monitors the following configurable physiological parameters: Heart Rate and Respiration Rate, as well as key cardiac arrhythmias, and a patient activated recording.
The zensor monitoring system has the option to store full disclosure ECG, Respiration and accelerometer data and/or wirelessly transmit pre-defined event alerts to the Intelesens zensoronline system for review by healthcare practitioners. All physiological data stored on the device can be imported for viewing on Intelesens zensor+ (Ambulatory Full Disclosure ECC and Event Viewer) for later analysis by a clinician.
#### Patient Population:
Adult
#### Environment of Use:
Home environment
## Contraindications:
- No contraindications exist ●
#### Technology:
The zensor System is an electronic device that contains software. It conforms to the applicable performance requirements contained in and referenced in this 510(k). The zensor System conforms to the following standards:
- AAMI ANSI ES 60601-1 Medical electrical equipment - Part 1: General requirements for basic safety and essential performance
- IEC 60601-1-11 Standard: Requirements for medical electrical equipment and medical electrical systems used in the home healthcare environment (Edition 2:2001 with Amendment 1:2004; Edition 2.1 (Edition 2:2001 consolidated with Amendment 1:2004)).
- AAMI / ANSI EC12:2000/(R) 2005, Disposable ECG electrodes. ●
- AAMI / ANSI EC57:1998/(R) 2008, Testing and reporting performance results of cardiac rhythm and ST-segment measurement algorithms
- AAMI ANSI IEC 60601-2-47: 2012 particular requirements for the basic safety and essential performance of ambulatory electrocardiographic systems
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# 510(k) Summary April 13, 2015 Page 5 of 5
## Summary of Performance Data
The zensor System has been tested in accordance with the relevant test plans/reports included with this 510(k) submission using the production equivalent units prior to release to market.
Testing includes:
- Hardware Verification ●
- Compliance with AAMI ANS ES 60601-1
- Compliance with IEC 60601-1-2
- System Validation
- Compliance with AAMI EC 57
- Compliance with AAMI EC12 ●
- Compliance with AAMI ANSI IEC 60601-2-47
- . Compliance with IEC 60601-1-11
Risk analyses identifying potential hazards and documenting mitigation of the hazards has been developed and applied as part of Intelesens' product development procedure. Intelesens' Quality System conforms to 21CFR820 and is certified by SGS UK Ltd. to ISO13485:2003 and ISO13485:2012.
#### Substantial Equivalence
#### Indications -
The indications for use are equivalent.
Prescriptive - The zensor and predicate are both prescription devices.
Design and Technology - The zensor and predicate have equivalent design features and technology
Performance and Specifications - The zensor has equivalent specifications of performance as the predicate.
#### Patient Population -
The zensor and predicate are indicated for adults
Environment of Use - zensor and predicate includes home
Differences -There are no differences between the proposed device and the predicate device that raise any new safety and efficacy concerns.
#### Substantial Equivalence Conclusion-
It is Intelesens' opinion that the zensor Monitoring System is substantially equivalent to the predicate device, and is safe and effective.
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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.
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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).
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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.
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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.
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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.
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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.
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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.
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Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
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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.
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A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
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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.