First human implantation of a new rotary blood pump: design of the clinical feasibility study.

Advances in Mechanical Circulatory Support Mechanical Circulatory Support for Advanced Heart Failure Patients and Technology in Evolution

After nearly 50 years of clinical development, durable mechanical circulatory support (MCS) devices are widely available for patients with advanced heart failure. The field of circulatory support has matured dramatically in recent years, thanks to the advent of smaller, rotary pumps. The resulting transition away from older pulsatile devices has been swift. Accelerated use of continuous-flow le...

Assessment of energy efficiency in pump stations of pressurized irrigation systems (case study: Qazvin and Kermanshah provinces)

About 20% of the electricity produced in the world is consumed in rotary equipment for conveying fluids such as water, gas, air, and other liquids, while the loss of energy consumption in this sector is more than 60%. The aim of this study is to evaluate different efficiencies in the pumping stations in the pressurized irrigation systems to address low energy efficiency issues in the pump stati...

Feasibility Study and Hardware Design of A Pivoting-Tip Rotary-Vane Compressor and Expander Applied to a Solar-Driven Heat Pump

First clinical experience with the DeBakey VAD continuous-axial-flow pump for bridge to transplantation.

BACKGROUND A shortage of donor organs and increased numbers of deaths of patients on the waiting list for cardiac transplantation make mechanical circulatory support for a bridge to transplantation a standard clinical procedure. Continuous-flow rotary blood pumps offer exciting new perspectives. METHODS AND RESULTS Two male patients (ages 44 and 65 years) suffering from end-stage left heart f...

The parametric study of an electrical submersible pump rotary gas separator under two-phase flow condition

The performance of the electric submersible pump (ESP) significantly affected by Gas Void Fraction (GVF). Thus, using of a Rotary Gas Separator (RGS) is a suitable solution for this issue. The performance of the RGS is function of different parameters such as geometry of impeller, rotating speed, boundary conditions, media viscosity and GVF. In this study, the influences of GVF, viscosity, ...