[A pump to assist the cardiac insufficiency]

Area of Science:

• Biomedical Engineering
• Cardiovascular Devices
• Biomaterials

Context:

• Current biopump designs for long-term blood circulation support face significant challenges.
• Existing methods like dynamic cardiomyoplasty, while using autogenous skeletal muscle, result in passive circulatory assistance.
• Previous skeletal muscle-driven pump models have seen limited clinical adoption due to design and surgical complexities.

Purpose:

• To introduce a novel biopump model that leverages skeletal muscle torsion force induced by electrical impulses.
• To characterize the pump's performance, including its linear ejection volume relative to tension rod elongation.
• To assess the feasibility of skeletal muscle as a viable actuator for biopump applications.

Summary:

• A new biopump model utilizes the torsion force of skeletal muscle, activated by electrical impulses, to aid blood circulation.
• The pump exhibits a linear relationship between ejected volume and tension rod elongation, with a maximum elongation of 4 cm and an operating force of 5 kg.
• Experimental results confirm that skeletal muscle meets the requirements for operating this biopump model, achieving a frequency of 60 BPM under standard conditions.

Impact:

• This research offers a promising alternative to existing circulatory support systems, potentially improving patient outcomes.
• The developed biopump model could overcome the limitations of current passive or surgically complex devices.
• Successful implementation could lead to more effective and less invasive long-term cardiac assistance solutions.