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510(k) Data Aggregation

    K Number
    K083879
    Manufacturer
    Date Cleared
    2009-02-23

    (56 days)

    Product Code
    Regulation Number
    868.1840
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The Spirometry Option for Innocor is intended to be used as a diagnostic spirometer, used in pulmonary function testing, to measure the flow of gas moving into and out of a patient's lungs.

    In order to produce data regarding the maximum performance with respect to tidal volume and ventilation, the specific parameters measured by the Innocor Spirometry Option are:
    FEV1: Forced expiratory volume in one second
    FVC: Forced vital capacity
    FEV1%: FEV1/FVC
    PEF: Peak expiratory flow
    MEF 75*: Maximum instantaneous forced expiratory flow where 75% of the FVC remains to be expired
    MEF 50*: Maximum instantaneous forced expiratory flow where 50% of the FVC remains to be expired
    MEF 25*: Maximum instantaneous forced expiratory flow where 25% of the FVC remains to be expired
    FET: Forced expiratory time
    MVV: Maximum voluntary ventilation

    • MEF 75 is equal to FEF 25 (maximal instantaneous forced expiratory flow where 25% of the FVC has been expired); MEF 50 is equal to FEF 50; MEF 25 is equal to FEF 75.
    Device Description

    Innocor is a compact point-of-care device intended to be used for non-invasive measurement of a) cardiac output (CO) and other hemodynamic parameters utilizing inert gas rebreathing (IGR) technology, and b) metabolic parameters including oxygen uptake by means of a breath-by-breath gas exchange method. The Cardiopulmonary Exercise Testing Option to Innocor provides measurements of gas exchange parameters including oxygen uptake (VO2), carbon dioxide excretion (VCO2), ventilation (Vr) and end-tidal gas concentrations plus a number of derived parameters. These parameters are determined by simultaneous measurements of the respiratory flow and gas concentrations when breathing ambient air. The respiratory flow is measured by means of a differential pressure type flowmeter (pneumotachometer) placed between the respiratory valve unit and the patient. The gas exchange calculations are carried out online for each breath between the rebreathing tests, providing the opportunity to perform an incremental exercise test on a bicycle ergometer or treadmill and measure the progress of cardiac function, pulmonary function and gas exchange at the same time.

    Spirometry is a physiological test that measures how an individual inhales or exhales volumes of air as a function of time. Spirometry is recognized as a valuable screening test of general respiratory health.

    The Spirometry Option for Innocor measures the subset of spirometric variables of a patient during a forced expiration testing procedure. These measured variables include FEV1 (forced expiratory volume in 1 second), FVC (forced vital capacity), FEV . PEF (peak expiratory flow), MEF 75 (Maximal instantaneous forced expiratory flow where 75% of the FVC remains to be expired), MEF 50, MEF 25, FET (Forced expiratory time) and MVV (Maximum voluntary ventilation). These parameters are determined by measurements of the respiratory flow when breathing ambient air during a spirometry test of a patient (tidal breathing followed by a full inspiration and then finally a maximal forced expiration). The respiratory flow is measured by means of a pneumotachometer.

    AI/ML Overview

    The Spirometry Option for Innocor device was evaluated against the "Standardisation of Spirometry" document in the series "ATS/ERS Task Force: Standardisation of Lung Function Testing," issued by The American Thoracic Society (ATS) and the European Respiratory Society (ERS). The performance data demonstrates that its hardware and software meet the ATS/ERS standards.

    1. Table of Acceptance Criteria and Reported Device Performance:

    AbbreviationNameUnitAcceptance Criteria (ATS/ERS Standards)Reported Device Performance
    FEV1Forced expiratory volume in one secondL [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards
    FVCForced vital capacityL [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards
    FEV1%FEV1/FVC%Meets ATS/ERS standardsMeets ATS/ERS standards
    PEFPeak expiratory flowL/sec [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards
    MEF 75*Maximum instantaneous forced expiratory flow where 75% of the FVC remains to be expiredL/sec [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards
    MEF 50*Maximum instantaneous forced expiratory flow where 50% of the FVC remains to be expiredL/sec [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards
    MEF 25*Maximum instantaneous forced expiratory flow where 25% of the FVC remains to be expiredL/sec [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards
    FETForced expiratory timeSecMeets ATS/ERS standardsMeets ATS/ERS standards
    MVVMaximum voluntary ventilationL/min [BTPS]Meets ATS/ERS standardsMeets ATS/ERS standards

    *Note: MEF 75 is equal to FEF 25; MEF 50 is equal to FEF 50; MEF 25 is equal to FEF 75.

    2. Sample size used for the test set and the data provenance:

    • The document does not specify the sample size for the test set or the data provenance (country of origin, retrospective or prospective nature). It generally states that "Performance data demonstrates that the hardware and software meet the ATS/ERS standards."

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:

    • This information is not provided in the document.

    4. Adjudication method for the test set:

    • This information is not provided in the document.

    5. 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:

    • The document does not mention an MRMC comparative effectiveness study. This device is a diagnostic spirometer for measuring pulmonary function, not an AI-assisted diagnostic tool for human readers.

    6. If a standalone (i.e., algorithm only without human-in-the-loop performance) was done:

    • The study described is a standalone performance evaluation of the Spirometry Option for Innocor against established spirometry standards (ATS/ERS), without involving human-in-the-loop performance testing.

    7. The type of ground truth used:

    • The ground truth used is the ATS/ERS Standards for spirometry. These standards define the accepted physiological measurements for various spirometric parameters.

    8. The sample size for the training set:

    • The document does not specify a training set sample size, as the evaluation focuses on comparing the device's measurements to established standards rather than a machine learning model's training.

    9. How the ground truth for the training set was established:

    • The concept of a "training set" and associated ground truth establishment is not applicable in the context described. The device's performance is validated against pre-existing, widely accepted ATS/ERS Standards, which serve as the reference for accuracy and reliability in spirometry. These standards are established by expert medical societies (American Thoracic Society and European Respiratory Society) based on scientific consensus and extensive research in pulmonary function testing.
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    K Number
    K051907
    Device Name
    INNOCOR
    Manufacturer
    Date Cleared
    2006-03-02

    (231 days)

    Product Code
    Regulation Number
    870.1425
    Reference & Predicate Devices
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    Innocor is indicated for the determination of a number of hemodynamic parameters. Cardiac Output (CO) is the principal measured parameter. Utilizing inert gas rebreathing, Innocor measures the relative levels of two inhaled gases of differing blood solubility over approximately 3-4 respirations and calculates pulmonary blood flow (PBF). In the absence of a significant intrapulmonary shunt (arterial oxygen saturation ≤ 95% as measured by a pulse oximeter incorporated in the Innocor), PBF is equal to CC. As an optional accessory, Innocor includes a noninvasive Blood Pressure (NIBP) monitoring system. This option provides systolic, diastolic and mean arterial pressures. With the NIBP option, Innocor provides values for the following measured and calculated hemodynamic parameters: Cardiac Output, Arterial Oxygen Saturation, Heart Rate, Stroke Volume, Lung Volume, Cardiac Index, troke Index, Blood Pressures (Systolic, Diastolic, Mean Arterial), ystemic Vascular Resistance, Systemic Vascular Resistance Index.

    Device Description

    Innocor is a compact point-of-care device intended to be used for measurement of a) cardiac output (CO) utilizing inert gas rebreathing (IGR) technology and b) other hemodynamic parameters. Two Models will be made available initially in the U.S: Innocor, Innocor with NIBP option. With the NIBP module option, the device will provide values for the hemodynamic parameters included in the Indications for Use below.

    AI/ML Overview

    The provided text for K051907 describes the Innocor device and its substantial equivalence to predicate devices, focusing on its ability to measure cardiac output and other hemodynamic parameters. However, it does not contain the detailed information required to fill out the table and answer the study-related questions about acceptance criteria, device performance, sample sizes, ground truth establishment, or expert involvement in a clinical study for the Innocor device itself.

    The document primarily focuses on establishing substantial equivalence for regulatory purposes by comparing the Innocor's intended use and components (inert gas rebreathing for cardiac output, pulse oximeter, NIBP) to already cleared predicate devices. It lists the predicate devices and the parameters Innocor measures but does not include a specific study design with acceptance criteria and performance metrics for the Innocor.

    Therefore, I cannot provide the requested table and detailed study information based solely on the provided text. The output below reflects the information that is not present in the provided document.


    1. Table of Acceptance Criteria and Reported Device Performance

    Parameter / MetricAcceptance CriteriaReported Device Performance
    Not specified in the provided textNot specified in the provided textNot specified in the provided text

    2. Sample Size for Test Set and Data Provenance

    • Sample Size: Not specified in the provided text.
    • Data Provenance: Not specified in the provided text (e.g., country of origin, retrospective or prospective).

    3. Number of Experts and Qualifications for Ground Truth Establishment

    • Number of Experts: Not specified in the provided text.
    • Qualifications of Experts: Not specified in the provided text.

    4. Adjudication Method for Test Set

    • Adjudication Method: Not specified in the provided text.

    5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

    • Was an MRMC study done? Not specified in the provided text. The document focuses on device equivalence, not human reader performance with or without AI assistance.
    • Effect Size of Human Reader Improvement: Not applicable, as an MRMC study is not mentioned.

    6. Standalone (Algorithm Only) Performance Study

    • Was a standalone study done? The document describes the device's functionality for measuring various parameters. While it performs these measurements, a formal "standalone study" with specific performance metrics against an established ground truth (as typically reported for AI/algorithm performance) is not detailed. The text implies a comparison to methods like Thermodilution and Direct Fick for cardiac output, but not in the format of a standalone performance study with defined criteria and results.

    7. Type of Ground Truth Used

    • Type of Ground Truth: For the cardiac output measurement, the document mentions substantial equivalence to "Thermodilution Cardiac Output Computers" and the "Direct Fick Method preamendment calculation method." These predicate methods serve as a comparative basis for the Innocor's measurements, implying they represent the "truth" against which the new device is compared. However, a specific ground truth dataset and its source (e.g., pathology, outcomes data, expert consensus on a test set) for Innocor's own validation is not described.

    8. Sample Size for Training Set

    • Sample Size: Not applicable. The Innocor is described as a device utilizing inert gas rebreathing technology and other measurement components, not an AI/machine learning algorithm that requires a training set in the conventional sense.

    9. How Ground Truth for Training Set Was Established

    • How Established: Not applicable, as there is no mention of a training set for an AI/machine learning component.
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