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The CardioGard Emboli Protection Cannula combines the function of a standard arterial cannula with an added suction mechanism to capture debris that may result from cardiac surgery.

The CardioGard Emboli Protection Cannula is intended for perfusion of the ascending aorta during short term (

The CardioGard Emboli Protection Cannula (CardioGard Cannula) is a sterile, single-use, disposable double lumen arterial cannula. The CardioGard Cannula features a tip configuration that diffuses oxygenated blood from the heart-lung machine into the ascending aorta through the Cannula Outlet, while also aspirating blood and embolic matter through the Suction Lumen Inlet. The flow rates through the two cannula lumens are carefully controlled so that emboli are suctioned back to the heart-lung machine for filtration while still enabling sufficient blood flow to the patient.

This document describes a 510(k) premarket notification for the CardioGard Emboli Protection Cannula, assessing its substantial equivalence to a previously cleared device (K141465). The focus of the changes in the modified device is to reduce device bulk and improve ease of use, while maintaining safety and effectiveness.

Here's an analysis of the acceptance criteria and supporting studies:

1. Table of Acceptance Criteria and Reported Device Performance:

   The document provides a comparative table (starting on page 5) outlining various design and performance characteristics between the "Cleared Device" (predicate) and the "Modified Device" (current submission). It doesn't explicitly state "acceptance criteria" for each row, but rather describes how the modified device compares to the predicate and notes whether they are "Same" or "Substantially equivalent" with a discussion of differences.

   Parameter	Acceptance Criteria (Implied)	Reported Device Performance (Modified Device)
   Intended Use	Same as predicate.	Same as predicate.
   Use Duration	Same as predicate (≤ 6 hours).	Same as predicate (≤ 6 hours).
   Cannula Design	Substantially equivalent to predicate, aiming for reduced bulk and improved ease of use.	Two lumen, curved tip with two ports (aortic perfusion, embolic particle suction). Suction tube angles 90° to reduce cannula profile.
   Tip Angle	30° to 60° (same as predicate).	30° to 60° (substantially equivalent).
   Tip Shape	Substantially equivalent to predicate, with features for ease of insertion and reduced back pressure.	Angled and tapered with dispersion side holes. Tip tapered for ease of insertion, dispersion side holes added to reduce back pressure.
   Flange	Redesigned for ease of suturing.	Redesigned flange to facilitate suturing in place.
   Dimensions	Substantially equivalent to predicate, with slight modifications to reduce bulk and improve ease of use.	Tip Size: Starts at 24Fr, ends at 22Fr. Main tube: diameter: 5/16" tapered to 3/8", length: 19–21 cm. Suction tube: diameter: 3/16" tapered to 1/4", length: 18–19 cm. (Slight modifications from predicate for bulk reduction/ease of use).
   Connectors	Addition of connector to suction tube for user convenience.	Connectors on both main and suction tubes (added connector to suction tube for user convenience).
   Caps	Color-coded caps on both tubes for user convenience.	Caps on both tubes: red for main tube and yellow for suction tube (color-coded for user convenience).
   Main (perfusion) Flow Rate	1 - 6 L/min (same as predicate).	1 - 6 L/min (same).
   Suction Flow Rate	0 - 1.0 L/min (reduced maximum from predicate to ensure 5 L net forward flow).	0 - 1.0 L/min (substantially equivalent, max suction flow rate reduced to provide for 5 L net forward flow).
   Pressure Drop	Within accepted range for aortic cannulas (substantially equivalent to predicate).	Pressure drop for both devices within accepted range for aortic cannulas (graphical comparison indicates substantial equivalence).
   Biological Safety - Materials	Biocompatibility confirmed in accordance with ISO 10993.	Tip: Polycarbonate (changed from PVC). Tubes: PVC (Plastisol) with stainless steel inner spring (same). Connectors: Polycarbonate (changed from ABS plastic). Caps: Polyethylene with PVC (Plastisol) outer cover (changed from Polyethylene). Biocompatibility confirmed.
   Sterilization	EtO sterilized, single-use, disposable, non-pyrogenic (same method and characteristics).	EtO sterilized, single-use, disposable, non-pyrogenic (same).
   EtO Sterilization Validation	SAL 10^-6^ using overkill method, half-cycle technique (EN ISO 11135-1:2008), EO/ECH residuals for endotoxins, USP for pyrogenicity, ISO 10993-1:2009 for biocompatibility).

   • Direct comparison to a legally marketed predicate device: For dynamic hemolysis and functional performance (embolic particle capture), the performance of the modified device was compared against the predicate device (K141465) or another commercially available arterial cannula (Medtronic Select 3D II).
   • Pre-defined acceptance criteria: For packaging and device integrity, explicit acceptance criteria were used.

2. The sample size for the training set:

   Not applicable. This is a physical medical device, not an AI/machine learning system that requires a "training set."

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

   Not applicable, as no training set was used.

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