MEDTRONIC AP40 Affinity CP Centrifugal Blood Pump

Condition: New
Part #: AP40

$1,600.00

MEDTRONIC AP40 Affinity CP Centrifugal Blood Pump

SKU: AP40 Categories: ,
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Description

The Medtronic Affinity CP Centrifugal Blood Pump (AP40) is a premier solution for extracorporeal circulation, engineered to meet the rigorous demands of modern cardiac surgery. This single-use centrifugal pump is designed to provide stable, reliable blood flow during cardiopulmonary bypass (CPB) procedures, prioritizing both patient safety and clinical efficiency.

By combining a low 40 mL priming volume with a sophisticated low-profile impeller, the AP40 minimizes hemodilution and reduces the risk of blood component damage. Its seamless integration with industry-standard control systems makes it a trusted choice for surgical teams worldwide who require precision and biocompatibility in high-stakes environments.


Core Technology: Advanced Fluid Dynamics

The Affinity CP AP40 utilizes a smooth cone and low-profile impeller design to optimize fluid dynamics. Unlike traditional displacement pumps, this centrifugal technology uses constrained vortex principles to move blood. This design significantly reduces mechanical “grinding” of blood cells, effectively lowering the risk of shear stress and hemolysis.

Furthermore, the pump is available with advanced surface modifications—Cortiva™ BioActive or Balance™—which are designed to improve the blood-contacting interface. These biocompatible coatings help reduce systemic inflammatory responses and thromboembolic risks during bypass.


Mechanism of Action

The AP40 operates through centrifugal force generated by a rapidly rotating impeller. As the impeller spins (up to 4,000 RPM), it creates a pressure gradient that draws blood through the central inlet and accelerates it toward the 3/8″ outlet connectors.

Because the flow is dependent on both the rotational speed and the afterload (pressure) of the systemic circuit, the pump offers a degree of “pressure sensitivity.” This provides an inherent safety margin compared to positive-displacement pumps, as it is less likely to generate excessive line pressures in the event of an occlusion.


Clinical Applications and Uses

The Medtronic AP40 is specifically indicated for use in the sterile blood circuit for procedures lasting up to 6 hours. Its primary applications include:

  • Cardiopulmonary Bypass (CPB): Full circulatory support during CABG, valve replacements, and aortic repairs.

  • Extracorporeal Circulation: Providing temporary support for surgical patients requiring diverted blood flow.

  • Emergency Support: Compatible with emergency handcrank systems for maintained perfusion during power or system failures.


Key Advantages for Surgical Teams

  • Superior Priming Efficiency: A minimal 40 mL priming volume helps maintain higher hematocrit levels and reduces the need for homologous blood transfusions.

  • Enhanced Patient Safety: Low hemolysis risk and precise flow control up to 10 L/min ensure stable systemic perfusion.

  • System Versatility: Seamlessly integrates with the Bio-Console 560 controller, allowing for intuitive monitoring and speed adjustments.

  • Optimized Biocompatibility: Optional Cortiva™ or Balance™ surfaces allow clinicians to tailor the circuit to specific patient inflammatory profiles.


Perfusion Comparison: AP40 vs. Traditional Roller Pumps

Feature AP40 Affinity CP Standard Roller Pumps
Priming Volume 40 mL 100–200 mL
Max Flow Rate 10 L/min 6–8 L/min
Hemolysis Risk Low (Gentle Impeller) Higher (Occlusive Tubing)
Safety Profile Pressure Sensitive Constant Displacement

Technical Specifications

  • Model Number: AP40

  • Priming Volume: 40 mL

  • Maximum Flow Rate: 10 L/min

  • Maximum Speed: 4,000 RPM

  • Connector Size: 3/8″ (Inlet and Outlet)

  • Duration of Use: Up to 6 Hours

  • Controller Compatibility: Bio-Console 560

  • Surface Options: Cortiva™ BioActive, Balance™, or Uncoated


Frequently Asked Questions

What are the primary benefits of the 40 mL priming volume in the AP40?

The low 40 mL priming volume is critical for reducing the amount of prime solution required to fill the circuit. This minimizes hemodilution, helps maintain higher perioperative hemoglobin levels, and potentially reduces the need for blood transfusions, which is a significant factor in improving patient outcomes and recovery times.

How does the AP40 design reduce the risk of hemolysis?

The AP40 features a smooth cone and low-profile impeller design that optimizes fluid paths. By avoiding the mechanical crushing action seen in roller pumps and reducing shear stress through refined fluid dynamics, the pump protects delicate red blood cells and platelets from damage during high-flow extracorporeal circulation.

Can the Medtronic AP40 be used for long-term respiratory support?

No, the Medtronic Affinity CP AP40 is specifically validated and indicated for procedures lasting up to 6 hours. It is designed for short-term cardiopulmonary bypass during cardiac surgery. For longer-term support, such as ECMO, clinicians should consult Medtronic’s portfolio of products specifically rated for long-term use.

Is the Affinity CP pump compatible with any heart-lung machine?

The Affinity CP AP40 is designed for optimized integration with the Medtronic Bio-Console 560. While centrifugal pumps require specific drive motors and controllers, the Bio-Console series provides the precise speed control and safety monitoring necessary to operate the AP40 effectively within a standard perfusion circuit.

What is the difference between Cortiva and Balance surface coatings?

Both are biocompatible surface treatments available for the AP40. Cortiva BioActive surface utilizes heparin to improve the blood-material interface, whereas Balance is a hydrophilic, heparin-free polymer coating. These options allow surgical teams to select the most appropriate surface based on the patient’s coagulation profile and clinical needs.

What safety measures are available if the Bio-Console 560 loses power?

The Affinity CP system is designed with a manual backup protocol. In the event of a power failure or electronic malfunction, the pump can be operated using an emergency handcrank. This ensures that the perfusionist can maintain vital blood flow to the patient without interruption while troubleshooting the primary system.

Listing Terms & Conditions

We ship worldwide, please inquire the shipping rate to your country before placing an order.

We carry all products of this brand in the listing, please let me know if you have any other inquires which is not listed in our store.

All purchases over $1,000 must be paid by wire transfer. We cannot accept international credit card payments for orders over $1,000.

Due to worldwide shipping delays, it is possible that items listed could be on backorder. If the item is unavailable for an extended period, we sincerely apologize for the delay. In this case, we will refund you as soon as we are notified of the backorder and contact you with the confirmation of refund.