Concept, realization, and first in vitro testing of an intraarterial microaxial blood pump.
Intravascular operating microaxial pumps have been clinically introduced (Hemopump 21; Hemopump 14) and have proven to be useful tools for cardiac assist. Due to device-related complications that are associated with the drive concept of an extracorporeal motor and a flexible drive shaft cable, a new pump concept is presented and has been refined in the development process. The cable is replace by a proximally attached drive unit and an extracorporeal power supply. In addition to ongoing hydrodynamic studies of the flow inside the pump and improvements of the overall hydraulic performance, a microelectric motor was realized and integrated. In vitro tests revealed the feasibility of such a concept.
Siess
T
T
Helmholtz-Institute for Biomedical Engineering, Aachen University of Technology RWTH, Germany.
Reul
H
H
Rau
G
G
D001011:Aorta; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D004867:Equipment Design; D005240:Feasibility Studies; D006353:Heart-Assist Devices / Q000592:standards* / Q000639:trends; D006801:Humans; D011673:Pulsatile Flow; D013696:Temperature