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510(k) Data Aggregation

    K Number
    K181077
    Manufacturer
    Date Cleared
    2018-05-24

    (30 days)

    Product Code
    Regulation Number
    882.5050
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    ActiGraph CentrePoint Insight Watch

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The ActiGraph CentrePoint Insight Watch is a small worn activity monitor designed for document associated with applications in physiological monitoring. The device is intended to monitor the activity associated with movement during sleep. The Insight watch can be used to analyze circadian rhythms and assess activity in any instance where quantifiable analysis of physical motion is desirable.

    Device Description

    The ActiGraph CentrePoint Insight Watch is a compact, battery-operated wearable activity recording device with physical characteristics similar to those of a small wristwatch. The watch is intended to acquire and store data from an onboard accelerometer while being worn during normal activities and/or during sleep. The data record is timestamped and stored in non-volatile memory for later retrieval. Downloaded data can be post-processed based on the timestamp and magnitude of acceleration along each axis.

    The housing is constructed of a combination of opaque and clear copolyesters formulated specifically for medical devices (i.e., tested and determined biocompatible), and the core data collection sensor is a 3-axis microelectromechanical system (MEMS) accelerometer. A charging dock connected to a USB power source is used to charge the device battery and communicate with a PC or peripheral.

    AI/ML Overview

    The ActiGraph CentrePoint Insight Watch is a wrist-worn activity monitor designed for physiological monitoring, particularly for tracking movement during sleep to analyze circadian rhythms and assess physical motion.

    Here's a breakdown of the acceptance criteria and supporting studies:

    1. Table of acceptance criteria and the reported device performance:
    CharacteristicAcceptance Criteria (Predicate Device K080545)Reported Device Performance (Subject Device K181077)
    Indications for UseRx Only; A small worn activity monitor designed for documenting physical movement associated with applications in physiological monitoring. The device is intended to monitor the activity associated with movement during sleep. Can be used to analyze circadian rhythms and assess activity in any instance where quantifiable analysis of physical motion is desirable.Same
    Materials of ConstructionPolycarbonate (housing); Nylon & Velcro® (wrist band)Different: Combination Copolymer (housing); Silicon (wrist band), conforms to 10993-1 Fourth edition 2009-10-15
    Power SourceLithium Ion Battery Rechargeable via USBSame
    Accelerometer TypeMicroelectromechanical system (MEMS)-based integrated circuitSame
    Accelerometer Sampling Rate30 Hz, Analog methodDifferent: Digital method, 32 Hz – 256 Hz
    Accelerometer Dynamic Range+/- 5 g+/- 8 g
    FirmwareEmbedded CEmbedded C (updated version)
    Wireless Communications InterfacePolar® moduleDifferent: Bluetooth® Low Energy; conforms to AAMI / ANSI / IEC 60601-1-2, Medical Electrical Equipment - Part 1-2: General Requirements for Safety - Collateral Standard: Electromagnetic Compatibility - Requirements and Tests and IEC 60601-1-2, Medical Electrical Equipment - Part 1-2: General Requirements For Basic Safety And Essential Performance - Collateral Standard: Electromagnetic Disturbances – Requirements And Tests.
    Memory1024kB512 MB
    Heart RateBPMSame
    Accelerometer Sensitivity4 milli-g per Least Significant BitDifferent: 2.4 milli-g per Least Significant Bit
    Storage Temperature-10 °C to 50 °CSame
    Operating Temperature0 °C to 40 °CDifferent: -10°C to 55°C (discharging); 0°C to 45°C while charging
    Water ResistanceIP21 (condensation)Minimum IP57 (1m for 30 minutes)
    Weight51 grams33 grams
    SizeWidth: 3.37 in (85.6 mm); Height: 1.5 in (38.1 mm); Thickness: 0.6 in (15.2 mm)Width: 1.41 in (35.8 mm); Height: 1.97 in (50.1 mm); Thickness: 0.41 in (10.5 mm)
    Recording Time @ 1 min. Epoch14 days30 days
    1. Sample size used for the test set and the data provenance (e.g., country of origin of the data, retrospective or prospective):
      The document states that "This premarket submission did not rely on the assessment of clinical performance data to demonstrate substantial equivalence." Therefore, there is no clinical test set described in this submission. The "test set" in this context refers to devices used for non-clinical bench testing. The sample size for these non-clinical tests is not explicitly mentioned, nor is the provenance of data for these tests beyond being "bench testing."

    2. Number of experts used to establish the ground truth for the test set and the qualifications of those experts: Not applicable, as no clinical test set for ground truth establishment is described. The acceptance is based on substantial equivalence to a predicate device through non-clinical bench testing.

    3. Adjudication method (e.g., 2+1, 3+1, none) for the test set: Not applicable, as no clinical test set requiring adjudication is described.

    4. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance: Not applicable. This device is an activity monitor, not an AI-assisted diagnostic tool that would involve human readers or MRMC studies.

    5. If a standalone (i.e., algorithm only without human-in-the loop performance) was done: The document describes the device as a standalone activity monitor that records and stores data from an accelerometer. Non-clinical bench testing was performed to demonstrate its performance and reliability in this standalone function. The "study" mentioned is the series of non-clinical bench tests performed to support substantial equivalence.

    6. The type of ground truth used (expert consensus, pathology, outcomes data, etc.): For the non-clinical tests, the "ground truth" would be established engineering specifications and recognized voluntary consensus standards. For example, accelerometer dynamic range, sampling rate, memory capacity, water resistance, weight, size, and recording time were compared against the predicate device's capabilities and against the device's own internal specifications validated through bench testing. The non-clinical bench tests included:

      • Performance and reliability testing
      • Comparative data analysis
      • Basic safety and essential performance in accordance with AAMI ES60601
      • Electromagnetic compatibility (EMC) in accordance with IEC 60601
      • Biocompatibility and material standards confirms there is no harm to the patient wearing the device.
      • System compatibility with ActiGraph software for data download and collection
    7. The sample size for the training set: Not applicable. This is not an AI/ML device that requires a training set for model development.

    8. How the ground truth for the training set was established: Not applicable, as there is no training set for an AI/ML model for this device.

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