Energy Analysis of a Cardiac Assist Device based on Dielectric Elastomer Actuator through an Equivalent Electrical Circuit

2021 ◽  
Author(s):  
J. Chavanne ◽  
F. Clavica ◽  
T. Martinez ◽  
Y. Civet ◽  
D. Obrist ◽  
...  
Keyword(s):  
Energy Analysis ◽  
Dielectric Elastomer ◽  
Electrical Circuit ◽  
Equivalent Electrical Circuit ◽  
Assist Device ◽  
Dielectric Elastomer Actuator ◽  
Cardiac Assist ◽  
Cardiac Assist Device

Cognitive Dysfunction in Advanced Heart Failure and Prospective Cardiac Assist Device Patients

2006 ◽  
Vol 81 (5) ◽  
pp. 1738-1744 ◽  
Author(s):  
Ralph J. Petrucci ◽  
Karen C. Truesdell ◽  
Anne Carter ◽  
Naomi E. Goldstein ◽  
Megan M. Russell ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cognitive Dysfunction ◽  
Advanced Heart Failure ◽  
Assist Device ◽  
Cardiac Assist ◽  
Cardiac Assist Device

Experimental Analysis of Pulsatile Flow Through Elastic Collapsible Tubes: Application to Cardiac Assist Device

1990 ◽  
Vol 112 (1) ◽  
pp. 75-79 ◽  
Author(s):  
O. Lichtenstein ◽  
U. Dinnar
Keyword(s):  
Systemic Circulation ◽  
Aortic Pressure ◽  
Assist Device ◽  
Cardiac Assist ◽  
Cardiac Assist Device ◽  
Non Invasive ◽  
Failing Heart ◽  
In Series ◽  
Vitro Analysis

This study presents a simulated analysis of Phased Compression Cardiac Assist Device (PCCAD) and evaluation of its applicability as a non-invasive temporary assist for a failing heart. The new technique is based on the chest pump mechanism for blood flow augmentation during external massage by phased compression of the abdominal and thoracic cavities. A semi-closed hydraulic system to simulate the systemic circulation was constructed; the system includes a left ventricle which functions according to the Starling principle and a pneumatic system which controls the pressures applied to the thoracic and abdominal cavities, in complete synchronization with the beating normal or failing heart. The possibility of manipulating the three pumps in series (venous, heart, and arterial) has been checked, and the principal parameters which effect the efficiency of the PCCAD were evaluated. This in-vitro analysis shows the high potential of a non-invasive temporary cardiac assist device. It points to the necessary measures one has to take in order to achieve good synchronization and to interfere externally with the augmentation of cardiac output or with the augmentation of root aortic pressure.

scholarly journals Cardiac Assist Devices: Early Concepts, Current Technologies, and Future Innovations

2019 ◽  
Vol 6 (1) ◽  
pp. 18 ◽  
Author(s):  
Jooli Han ◽  
Dennis Trumble
Keyword(s):  
Mechanical Circulatory Support ◽  
Circulatory Support ◽  
Assist Device ◽  
Short Supply ◽  
Power Sources ◽  
Cardiac Assist ◽  
Cardiac Assist Device ◽  
Cardiac Assist Devices ◽  
Blood Pumps

Congestive heart failure (CHF) is a debilitating condition that afflicts tens of millions of people worldwide and is responsible for more deaths each year than all cancers combined. Because donor hearts for transplantation are in short supply, a safe and durable means of mechanical circulatory support could extend the lives and reduce the suffering of millions. But while the profusion of blood pumps available to clinicians in 2019 tend to work extremely well in the short term (hours to weeks/months), every long-term cardiac assist device on the market today is limited by the same two problems: infections caused by percutaneous drivelines and thrombotic events associated with the use of blood-contacting surfaces. A fundamental change in device design is needed to address both these problems and ultimately make a device that can support the heart indefinitely. Toward that end, several groups are currently developing devices without blood-contacting surfaces and/or extracorporeal power sources with the aim of providing a safe, tether-free means to support the failing heart over extended periods of time.

THE FIRST LEFT VENTRICULAR CARDIAC ASSIST DEVICE WITHOUT ANY WEAR AND TEAR IN A CLINICAL MULTICENTER TRIAL

ASAIO Journal ◽  
2003 ◽  
Vol 49 (2) ◽  
pp. 162 ◽  
Author(s):  
J Mueller ◽  
P Nuesser ◽  
Y Weng ◽  
E Potapov ◽  
T Drews ◽  
...  
Keyword(s):  
Multicenter Trial ◽  
Left Ventricular ◽  
Assist Device ◽  
Cardiac Assist ◽  
Cardiac Assist Device ◽  
Wear And Tear
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