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A single pulsatile pump for total biventricular cardiac support using patient lung ventilation
1Biomedical Engineering Program, University of Texas at Austin, TX 78712, USA.
ASAIO Journal (American Society for Artificial Internal Organs : 1992)
|September 1, 1996
Summary
A novel extracorporeal pulsatile heart pump provides automatic biventricular cardiac support. This innovative device ensures volume balance between heart ventricles, crucial for advanced circulatory support systems.
Area of Science:
- Biomedical Engineering
- Cardiovascular Physiology
Background:
- Biventricular heart failure necessitates advanced circulatory support.
- Current devices often struggle with automatic inter-ventricular volume regulation.
Purpose of the Study:
- To develop and assess a modified extracorporeal pulsatile heart pump for biventricular cardiac support.
- To achieve automatic volume balance between the left and right ventricles.
Main Methods:
- Modification of an extracorporeal pulsatile heart pump with two independent fluid circuits.
- Utilizing a common pusher plate for simultaneous compression of both circuits.
- In vivo studies in pigs and in vitro testing for performance evaluation.
Main Results:
- Demonstrated feasibility in porcine models with physiologic flow during induced ventricular fibrillation.
- Achieved automatic beat-to-beat volume balance without external sensors.
- In vitro testing yielded outputs up to 7.0 L/min per circuit for adult human requirements.
Conclusions:
- The modified pulsatile heart pump effectively provides biventricular cardiac support.
- The device's automatic volume balancing mechanism is a significant advancement.
- This technology holds promise for treating advanced biventricular heart failure.