Development of a direct systolic cardiac augmentation device

Area of Science:

• Biomedical Engineering
• Cardiovascular Devices
• Medical Technology

Background:

• Heart failure significantly impacts cardiac function.
• Existing treatments for severe heart conditions have limitations.
• Direct mechanical support for weakened hearts is an area of active research.

Purpose of the Study:

• To develop and evaluate a direct systolic cardiac augmentation device, the heart cuff.
• To assess the feasibility of the heart cuff in improving cardiac function.
• To determine the device's ability to remain in position and supplement heart function.

Main Methods:

• Development of a heart cuff with inflatable balloons and an adjustable shell.
• Utilizing an intra-aortic balloon pump system for balloon pressure regulation.
• Employing ECG-timed circuitry for synchronized inflation/deflation with cardiac cycles.
• Testing the device on normal beating canine hearts.

Main Results:

• The heart cuff was successfully developed and designed for placement around weakened hearts.
• The device demonstrated the ability to be quickly and easily positioned.
• The heart cuff remained in place and supplemented heart function during assistance in canine models.

Conclusions:

• The heart cuff represents a novel approach to direct systolic cardiac augmentation.
• The device shows potential for improving cardiac function in hearts requiring mechanical support.
• Further research is warranted to explore its efficacy in various cardiac conditions.