A Novel Concept of Ventricular Assist Devices (VADs)

Among the remarkable applications of smart materials in healthcare, artificial muscles epitomize innovation inspired by nature. These materials, also known as electroactive polymers, mimic the functioning of human muscles by contracting, expanding, and generating force when stimulated by an electrical charge, replicating the intricate movements of natural musculature.

The development of artificial muscles and their successful integration into medical contexts has paved the way for groundbreaking medical devices, particularly in cardiomyoplasty. Leveraging this technology, we aim to design a revolutionary VAD to improve health outcomes for individuals with end-stage heart failure. Our vision is to create a next-generation VAD comprising a soft robotic sleeve powered by artificial muscles. Key objectives include miniaturizing the sleeve for implantation, optimizing its long-term effectiveness and durability, and refining its operating parameters to ensure seamless integration with natural cardiac function.

At Hannover Medical School, we have developed artificial heart muscles capable of powering soft robotic devices that emulate complex biological systems, such as the heart's compression and twisting actions. These artificial muscles are engineered to undergo intricate deformations, enhancing cardiac function while maintaining minimal weight and spatial footprint. Electrothermally actuated artificial heart muscles have demonstrated exceptional force generation capabilities, marking a significant advancement toward fully soft robotic VADs. This innovation holds immense potential to redefine treatment strategies for heart failure, offering a less invasive and more efficient alternative to traditional mechanical devices.