+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Performance study on newly developed impellers for a left ventricular assist device

Performance study on newly developed impellers for a left ventricular assist device

International Journal of Artificial Organs 30(7): 594-603

Our research develops a performance study on newly developed impellers for a left ventricular assist device. In order to analyze the hemodynamic characteristics of blood flow through the ventricular assist device, the CFX-TASCflow software is adopted to investigate the flow-field characteristics. The numerical results provide not only the flow characteristics for the overall field, but also the data of relationship for flow rate and pressure head. In the conceptual design process, hemodynamic study for an initial impeller design is presented first and a geometry change is recommended. Two design models are developed and the associated flow rate and pressure head performances are evaluated as well. According to design criteria, the most efficient design is the one with a smooth flow passage and with a low possibility for vortex generation. We suggest the superior design be chosen for further in vitro testing and be prepared for the new design generation. It has been shown that the design can provide a flow rate of 3.0 l/min with a pressure head of 127.09 mmHg. Both the flow rate and pressure head can meet requirements for the left ventricular assist device to work normally.

(PDF emailed within 0-6 h: $19.90)

Accession: 016630179

Download citation: RISBibTeXText

PMID: 17674336

DOI: 10.1177/039139880703000707

Related references

Flow study on a newly developed impeller for a left ventricular assist device. Journal of Artificial Organs 6(2): 92-100, 2003

Left Ventricular Assist Device Design Reduces von Willebrand Factor Degradation: A Comparative Study Between the HeartMate II and the EVAHEART Left Ventricular Assist System. Annals of Thoracic Surgery (): -, 2016

Newly developed ventricular assist device with linear oscillatory actuator. Asaio Journal 49(3): 333-339, 2003

The combination of pulmonary hypertension and right ventricular failure limits left ventricular assist device performance An experimental study. Journal of the American College of Cardiology 27(2 SUPPL A): 185A, 1996

Management of three cardiogenic pulmonary edemas occurring in a patient scheduled for left ventricular assist device implantation: indicators for determining left ventricular assist device pump speed. Journal of Anesthesia 30(4): 711-715, 2016

Use of the percutaneous left ventricular assist device in patients with severe refractory cardiogenic shock as a bridge to long-term left ventricular assist device implantation. Journal of Heart and Lung Transplantation 27(1): 106-111, 2008

Left Ventricular Assist Device Inflow Angle and Pump Positional Change Over Time Adverse Impact on Left Ventricular Assist Device Function. Annals of Thoracic Surgery 102(6): 1933-1940, 2016

Feasibility of cell transplantation with a left ventricular assist device to improve the success rate of left ventricular assist device removal: the first experiment. Interactive Cardiovascular and Thoracic Surgery 12(1): 10-14, 2011

Suitable stiffness of housing with soft diaphragm in newly developed ventricular assist device. International Journal of Artificial Organs 14(9): 575, 1991

Temporary extracorporeal left ventricular assist device support for implantable left ventricular assist device replacement cases. Journal of Thoracic and Cardiovascular Surgery 147(4): E46-E48, 2014

Initial experience of conversion of Toyobo paracorporeal left ventricular assist device to DuraHeart left ventricular assist device. Circulation Journal 76(2): 372-376, 2012

External left ventricular performance in the calf during acute ischemia and with abdominal left ventricular assist device support. Circulation Supplement 50(4-3): III167, 1974

Novacor left ventricular assist system versus HeartMate vented electric left ventricular assist system as a long-term mechanical circulatory support device in bridging patients: A prospective study. Journal of Thoracic & Cardiovascular Surgery 119(3): 581-587, March, 2000

A multicenter prospective paired comparison of exercise capacity in patients on the left ventricular assist device versus heart transplantation Results of the experience with left ventricular assist device with exercise trial. Journal of Heart & Lung Transplantation 17(1): 72, 1998