Cardiac Assist Devices: Early Concepts, Current Technologies, and Future Innovations

Area of Science:

• Biomedical Engineering
• Cardiology
• Medical Devices

Background:

• Congestive heart failure (CHF) is a leading cause of death globally, with limited donor hearts for transplantation.
• Existing mechanical circulatory support (MCS) devices provide short-term benefits but are plagued by driveline infections and thrombotic events.
• A need exists for durable, long-term MCS solutions to improve patient survival and quality of life.

Purpose of the Study:

• To review the limitations of current long-term cardiac assist devices.
• To explore novel device designs addressing infection and thrombosis.
• To highlight advancements in developing indefinite mechanical circulatory support.

Main Methods:

• Review of current literature on mechanical circulatory support devices.
• Analysis of limitations in existing blood pump technology.
• Examination of emerging device designs focusing on blood-contact-free surfaces and wireless power.

Main Results:

• Current long-term MCS devices are limited by percutaneous driveline infections and blood-contact surface thrombosis.
• Novel approaches are being developed to eliminate blood-contacting surfaces and extracorporeal power sources.
• These innovations aim to create safer, tether-free devices for indefinite cardiac support.

Conclusions:

• Fundamental changes in MCS device design are necessary to overcome current limitations.
• Development of blood-contact-free and wirelessly powered devices holds promise for long-term, safe cardiac support.
• Future MCS technologies could offer indefinite support for patients with advanced heart failure.