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The Rotaflow Centrifygal Pump is a device that uses a method other to pump the blood through an extracorporeal circuit for periods lasting less than 6 hours for the purpose of providing either:

· Full or partial cardiopulmonary bypass (i.e., circuit includes an oxygenator) during open surgical procedures on the heart or great vessels; or

· Temporary circulatory bypass for diversion of flow around a planned disruption of the circulatory pathway necessary for open surgical procedures on the aorta or vena cava.

The Jostra RotaFlow Centrifugal Pump with Safeline Coating is a sterile, nonpyrogenic device for single use only and is not to be re-sterilized by the user.

The RotaFlow Centrifugal Pump with Safeline Coating is indicated as a component of the extracorporeal circuit and is intended to be used exclusively in conjunction with the RotaFlow-Console, the RotaFlow Drive Unit and the RotaFlow Emergency Drive. The device is not designed or intended for use except as indicated. The centrifugal pump is indicated for single use as a pump for up to 6 hrs.

The RotaFlow is a blood pump that functions on the basis of the centrifugal principle, whereas the drive is based on a magnetic system. A sapphire ball and a PE calotte guarantee low friction bearing.

The centrifugal pump has a spinning rotor with flow channels which impart rotary motion to the incoming blood, directing it through a spiral housing to the outflow port. The Rotor is shrouded. It forms the flow channels with 4 fan-shaped members. The flow is guided from the center of the pump to the periphery of the pump, where it is then forced into the flow channel by means of a spiral flow channel the cross-section of which increases in the direction of flow. The RotaFlow Centrifugal Pump allows for pulsatile and non-pulsatile flow.

The RotaFlow Centrifugal Pump comes with an integrated flow probe connector.

The design principle minimizes blood traumatization and stress with optimum flow guidance. Additionally, the pump design results in no stagnant blood zones and a small priming volume of 32 ml which allows for minimal mean transit time (MTT).

This document is a 510(k) premarket notification for the RotaFlow Centrifugal Pump System with Safeline Coating, seeking substantial equivalence to existing predicate devices. It describes the device, its indications for use, and the studies conducted to support its safety and effectiveness.

Here's an analysis of the requested information:

1. Table of Acceptance Criteria and Reported Device Performance

The document does not explicitly state "acceptance criteria" in a quantitative, pass/fail manner. Instead, it describes areas of evaluation and general findings to demonstrate substantial equivalence to predicate devices. The "reported device performance" is descriptive rather than numerical against predefined criteria.

2. Sample Size Used for the Test Set and Data Provenance

The document does not provide specific sample sizes for any of the tests conducted (e.g., integrity, performance, stability, biocompatibility, sterility). It simply states that these areas "have been tested and / or evaluated."

The "data provenance" is not explicitly mentioned regarding country of origin or whether the studies were retrospective or prospective. Given it's a premarket notification for a medical device manufactured by Maquet Cardiopulmonary AG in Germany, it's highly probable the testing was conducted in Germany or by its designated contract research organizations. The nature of the tests (integrity, performance, biocompatibility, sterility) suggests prospective laboratory testing.

3. Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications of Those Experts

This document does not describe studies that require expert-established ground truth in the way clinical diagnostic AI studies do. The tests performed are engineering and biological validations (e.g., device integrity, coating stability, biocompatibility, sterility). These typically rely on standardized test methods and laboratory measurements rather than expert consensus on diagnostic interpretations. Therefore, this information is not applicable to this document.

4. Adjudication Method for the Test Set

As the tests described are primarily objective engineering and biological assessments rather than diagnostic interpretations, an "adjudication method" in the context of expert review (e.g., 2+1, 3+1) is not applicable. The methods would involve analytical techniques and comparisons to engineering specifications or biological standards.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study was Done

No. This document describes a traditional medical device (a centrifugal blood pump), not an AI/CADe/CADx system that would typically involve human readers or MRMC studies. Therefore, this information is not applicable.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) was Done

No. This device is a physical medical device (a blood pump), not an algorithm. Therefore, this information is not applicable.

7. The Type of Ground Truth Used

For the various tests conducted:

• Integrity and Performance: Ground truth would likely be established based on engineering specifications, physical measurements, and functional testing against design requirements.
• Stability of the Coating: Ground truth would be defined by pre-defined chemical and physical stability profiles of the Safeline coating.
• Biocompatibility: Ground truth is established by recognized international standards for biocompatibility (e.g., ISO 10993 series) and comparison to the biocompatibility data of the predicate Quadrox Safeline Oxygenator.
• Sterility: Ground truth is established by validation to comply with established sterility assurance levels (e.g., ISO 11135, ISO 11137).

8. The Sample Size for the Training Set

This document describes a physical medical device, not a machine learning algorithm. Therefore, the concept of a "training set" is not applicable.

9. How the Ground Truth for the Training Set was Established

As the concept of a "training set" does not apply to this physical device, this information is not applicable.

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