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The Mask is intended to provide an interface for Continuous Positive Airway Pressure (CPAP) or bi-level therapy. The Mask is intended for single-patient reuse in the home and multi-patient multi-use in the hospital environment.

The Mask is to be used by adults weighing ≥ 30 kg whom positive airway pressure (CPAP or bi-level system) has been prescribed.

WiZARD 520 Full Face Mask's cushion and frame provide a secure interface between the mask and the patient's face and the flexible cushion improves seal. A series of vents on the elbow, serve as an exhalation vent to purge the exhaled carbon dioxide from the mask. The mask is designed to maintain a continuous airflow to minimize the amount of CO2 rebreathed by the patient. The mask features a wider visibility design that ensures a clear line of sight. It also includes a fabric frame equipped with 3D-shaped headgear for enhanced comfort and stability.

WiZARD 520 Full Face Mask is intended for connection to a positive air pressure source such as CPAP or bi-level for the treatment of Obstructive Sleep Apnea. WiZARD 520 Full Face Mask can be linked to the CPAP or bi-level system's standard 22 mm breathing tube using a swivel hose, flexible tube, and tubing connector. Various sizes (small, medium, and large) are offered to ensure adequate fit over the extended patient population.

The provided text is an FDA 510(k) clearance letter for the WiZARD 520 Full Face Mask. This document describes the substantial equivalence of the new device to a predicate device, focusing on its physical and functional characteristics. It does not describe a study proving the device meets acceptance criteria related to an AI/Machine Learning model, nor does it provide information relevant to a Multi-Reader Multi-Case (MRMC) comparative effectiveness study or the establishment of ground truth by expert consensus.

The clearance is for a physical medical device (a CPAP mask), not a software or AI-driven diagnostic tool. Therefore, the concepts of "acceptance criteria for an AI model," "sample size for test/training sets," "number of experts for ground truth," "adjudication method," "MRMC study," or "standalone algorithm performance" are not applicable to this document.

The document discusses performance tests that are standard for a physical medical device, such as CO2 rebreathing, pressure-flow characteristics, resistance to flow, anti-asphyxia valve operating pressures, and sound levels. These are engineering and physiological performance metrics, not metrics for an AI's diagnostic accuracy or expert agreement.

Therefore, I cannot fulfill your request using the provided input, as the input material does not contain the type of information you've asked for. It's crucial to understand that a 510(k) for a physical medical device like a CPAP mask does not involve AI development or validation processes.

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