[The design of bionic left ventricular auxiliary pump].

Area of Science:

• Biomedical Engineering
• Cardiovascular Devices
• Medical Device Design

Background:

• Heart failure necessitates advanced circulatory support.
• Existing left ventricular assist devices (LVADs) present challenges.
• Bionic designs offer potential for improved patient outcomes.

Purpose of the Study:

• To report a novel bionic left ventricular auxiliary pump design.
• To evaluate its performance in mimicking natural cardiac function.
• To assess its suitability for patients with heart disease.

Main Methods:

• A novel pump design utilizing a hydraulic-driven elastic diaphragm.
• Integration of flow and pressure sensors for real-time monitoring.
• ECG R-wave synchronization for pulsatile or asynchronous operation.
• In vivo animal experimentation to validate performance.

Main Results:

• The bionic pump demonstrated smooth and reliable blood supply.
• The design incorporates features to prevent blood clot formation.
• Blood pressure waveforms closely matched expected physiological patterns.
• Stable, set-value-based flow rates were achieved during experiments.

Conclusions:

• The novel bionic left ventricular auxiliary pump shows promise for clinical application.
• The device's design facilitates bionic pulsatile assistance.
• Successful animal trials indicate the pump's potential to meet patient requirements for advanced cardiac support.