Influence of circumferential annular grooving design of impeller on suspended fluid force of axial flow blood pump

2022 ◽  
pp. 039139882110649
Author(s):  
Liang Wang ◽  
Zhong Yun ◽  
Xiaoyan Tang ◽  
Chuang Xiang
Keyword(s):  
Axial Flow ◽  
Groove Depth ◽  
Blood Pump ◽  
Suspension Stability ◽  
Impeller Blade ◽  
Stable Suspension ◽  
Axial Flow Blood Pump ◽  
The Stability ◽  
The Mathematical Model ◽  
The Relationship

Aiming at insufficient suspension force on the impeller when the hydraulic suspension axial flow blood pump is start at low speed, the impeller suspension stability is poor, and can’t quickly enter the suspended working state. By establishing the mathematical model of the suspension force on the impeller, then the influence of the circumferential groove depth of the impeller on the suspension force is analyzed, and the annular groove depth on the impeller blade in the direction of fluid inlet and outlet was determined as (0.26, 0.02 mm). When the blood pump starts, there is an eccentricity between the impeller and the pump tube, the relationship between the suspension force and the speed of the impeller under different eccentricities is analyzed. Combined with the prototype experiment, the circumferential annular grooving design of the impeller can make the blood pump rotate at about 3500 rpm into the suspension state, when the impeller is at 8000 rpm, the impeller can basically achieve stable suspension at the eccentricity of 0.1 mm in the gravity direction, indicating that the reasonable circumferential annular grooving design of the impeller can effectively improve the suspension hydraulic force of the impeller and improve the stability of the hydraulic suspension axial flow blood pump.

Five Month Survival in a Calf Supported With an Intraventricular Axial Flow Blood Pump

ASAIO Journal ◽  
1995 ◽  
Vol 41 (3) ◽  
pp. M333-M336 ◽  
Author(s):  
Steven M. Parnis ◽  
Michael P. Macris ◽  
Robert Jarvik ◽  
John L. Robinson ◽  
Jeffrey W. Kolff ◽  
...  
Keyword(s):  
Axial Flow ◽  
Blood Pump ◽  
Axial Flow Blood Pump

Induction of Ventricular Collapse by an Axial Flow Blood Pump

ASAIO Journal ◽  
1998 ◽  
Vol 44 (5) ◽  
pp. M685-M690 ◽  
Author(s):  
Devin V. Amin ◽  
James F. Antaki ◽  
Philip Litwak ◽  
Douglas Thomas ◽  
Zhongjun J. Wu ◽  
...  
Keyword(s):  
Axial Flow ◽  
Blood Pump ◽  
Axial Flow Blood Pump

Walking Stability Analysis of Multi-Legged Crablike Robot over Slope

2013 ◽  
Vol 572 ◽  
pp. 636-639
Author(s):  
Xi Chen ◽  
Gang Wang
Keyword(s):  
Mathematical Model ◽  
Stability Analysis ◽  
Stability Criterion ◽  
Stability Margin ◽  
Static Stability ◽  
Matlab Simulation ◽  
And Performance ◽  
The Stability ◽  
The Mathematical Model ◽  
The Relationship

This paper deals with the walking stability analysis of a multi-legged crablike robot over slope using normalized energy stability margin (NESM) method in order to develop a common stabilization description method and achieve robust locomotion for the robot over rough terrains. The robot is simplified with its static stability being described by NESM. The mathematical model of static stability margin is built so as to carry out the simulation of walking stability over slope for the crablike robot that walks in double tetrapod gait. As a consequence, the relationship between stability margin and the height of the robots centroid, as well as its inclination relative to the ground is calculated by the stability criterion. The success and performance of the stability criterion proposed is verified through MATLAB simulation and real-world experiments using multi-legged crablike robot.

A Miniature Intraventricular Axial Flow Blood Pump That is Introduced Through the Left Ventricular Apex

ASAIO Journal ◽  
1992 ◽  
Vol 38 (3) ◽  
pp. M679-M683 ◽  
Author(s):  
KENJI YAMAZAKI ◽  
MITUO UMEZU ◽  
HITOSHI KOYANAGI ◽  
MASAYA KITAMURA ◽  
KIYOYUKI EISHI ◽  
...  
Keyword(s):  
Axial Flow ◽  
Left Ventricular ◽  
Blood Pump ◽  
Left Ventricular Apex ◽  
Axial Flow Blood Pump

Proposal of hemodynamically improved design of an axial flow blood pump for LVAD

2019 ◽  
Vol 58 (2) ◽  
pp. 401-418
Author(s):  
Vikas Kannojiya ◽  
Arup Kumar Das ◽  
Prasanta Kumar Das
Keyword(s):  
Axial Flow ◽  
Blood Pump ◽  
Axial Flow Blood Pump ◽  
Improved Design

In Vivo Evaluation of an Intraventricular Axial Flow Blood Pump

1998 ◽  
pp. 396-400 ◽  
Author(s):  
Kenji Yamazaki ◽  
Robert L. Kormos ◽  
Osamu Tagusari ◽  
Philip Litwak ◽  
Toshio Mori ◽  
...  
Keyword(s):  
Axial Flow ◽  
Blood Pump ◽  
In Vivo Evaluation ◽  
Axial Flow Blood Pump

In Vitro Performance of a Centrifugal, a Mixed Flow, and an Axial Flow Blood Pump

1998 ◽  
Vol 22 (5) ◽  
pp. 366-370 ◽  
Author(s):  
Kenji Araki ◽  
Hirofumi Anai ◽  
Mitsuo Oshikawa ◽  
Kunihide Nakamura ◽  
Toshio Onitsuka
Keyword(s):  
Axial Flow ◽  
Blood Pump ◽  
Mixed Flow ◽  
Axial Flow Blood Pump ◽  
In Vitro Performance
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