[Axial micro-pump system of assisted circulation]

Area of Science:

• Biomedical Engineering
• Cardiovascular Devices
• Medical Device Development

Context:

• Minimally invasive cardiac support is crucial for treating heart failure.
• Existing devices face challenges with size and implantation complexity.
• The ascending aorta is a potential site for circulatory support device implantation.

Purpose:

• To develop a compact axial-flow micropump for assisted circulation.
• To evaluate the feasibility of peripheral artery introduction into the ascending aorta.
• To assess the biocompatibility, hemolysis, and performance of the micropump system.

Summary:

• A HART-02 axial-flow micropump, measuring 7mm in diameter and 20mm in length, has been engineered.
• The micropump is designed for insertion into the ascending aorta via a peripheral artery.
• The system demonstrates excellent biocompatibility, minimal hemolysis, and a significant flow rate of 3.5 L/min.

Impact:

• This development offers a promising new option for minimally invasive cardiac assistance.
• The device's small size and implantation method could reduce surgical risks.
• High flow productivity suggests potential for effective hemodynamic support in patients with heart failure.