Rotary mechanical circulatory support systems

TL;DR

This paper provides a comprehensive survey of rotary mechanical circulatory support systems, focusing on technological aspects like flow regimes, control mechanisms, and device specifications, aimed at engineers and biomedical researchers.

Contribution

It offers a detailed overview of current trends, classifications, and technical characteristics of rotary circulatory support devices, highlighting areas for future research and improvement.

Findings

Categorization of pumps into axial, centrifugal, and mixed flow.

Summary of system specifications and applications.

Discussion of current limitations and future directions.

Abstract

A detailed survey of the current trends and recent advances in rotary mechanical circulatory support systems is presented in this paper. Rather than clinical reports, the focus is on technological aspects of these rehabilitating devices as a reference for engineers and biomedical researchers. Existing trends in flow regimes, flow control, and bearing mechanisms are summarized. System specifications and applications of the most prominent continuous-flow ventricular assistive devices are provided. Based on the flow regime, pumps are categorized as axial flow, centrifugal flow, and mixed flow. Unique characteristics of each system are unveiled through an examination of the structure, bearing mechanism, impeller design, flow rate, and biocompatibility. A discussion on the current limitations is provided to invite more studies and further improvements.