DETECTION OF SUCTION FOR AN IMPLANTABLE CONTINUOUS FLOW PUMP AS WELL AS DIAGNOSIS OF NATIVE HEART RECOVERY PROCESS BASED ON THE MOTOR CURRENT WAVEFORM ANALYSIS

ASAIO Journal ◽  
1999 ◽  
Vol 45 (2) ◽  
pp. 168
Author(s):  
E Hatoh ◽  
A Yuhki ◽  
M Iseki ◽  
M Nogawa ◽  
M Miura ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Recovery Process ◽  
Waveform Analysis ◽  
Current Waveform ◽  
Motor Current ◽  
Flow Pump

A New Automatic Cardiac Output Control Algorithm for Moving Actuator Total Artificial Heart by Motor Current Waveform Analysis

1996 ◽  
Vol 19 (3) ◽  
pp. 189-196 ◽  
Author(s):  
W.W. Choi ◽  
H.C. Kim ◽  
B.G. Min
Keyword(s):  
Cardiac Output ◽  
Artificial Heart ◽  
Control Algorithm ◽  
Total Artificial Heart ◽  
Waveform Analysis ◽  
Right Atrial ◽  
Current Waveform ◽  
Output Control ◽  
Mock Circulatory System ◽  
Motor Current

A new automatic cardiac output control algorithm for an implantable electromechanical total artificial heart (TAH) was developed based on the analysis of motor current waveform without using any transducer. The basic control requirements of an artificial heart can be described in terms of three features: preload sensitivity, afterload insensivity, and balanced ventricular output. In previous studies, transducers were used to acquire information on the hemodynamic states for automatic cardiac output control. However, such a control system has reliability problems with the sensors. We proposed a novel sensorless automatic cardiac output control algorithm (ACOCA) providing adequate cardiac output to the time-varying physiological demand without causing right atrial collapse, which is one of the critical problems in an active filling device. In vitro tests were performed on a mock circulatory system to assess the performance of the developed algorithm and the results show that the new algorithm satisfied the basic control requirements of the cardiac output response.

scholarly journals PREDICTION OF LVAD FAILURE THROUGH MOTOR CURRENT WAVEFORM ANALYSIS

ASAIO Journal ◽  
1997 ◽  
Vol 43 (2) ◽  
pp. 57 ◽  
Author(s):  
A F Choudhri ◽  
P C Michelman ◽  
J E Tsillik ◽  
M C Oz ◽  
H R Levin
Keyword(s):  
Waveform Analysis ◽  
Current Waveform ◽  
Motor Current

Automatic Control of the Implantable Centrifugal Blood Pump Based on Analysis of the Motor Current Waveform

2001 ◽  
pp. 431-435
Author(s):  
K Ouchi ◽  
E Hatoh ◽  
A Yuhki ◽  
M Nakamura ◽  
T Sakamoto ◽  
...  
Keyword(s):  
Automatic Control ◽  
Blood Pump ◽  
Current Waveform ◽  
Centrifugal Blood Pump ◽  
Motor Current

Continuous-flow pump model study: the effect on pump performance of pump characteristics and cardiovascular conditions

2013 ◽  
Vol 16 (2) ◽  
pp. 149-156 ◽  
Author(s):  
Gianfranco Ferrari ◽  
Maciej Kozarski ◽  
Libera Fresiello ◽  
Arianna Di Molfetta ◽  
Krzysztof Zieliński ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Pump Performance ◽  
Model Study ◽  
Flow Pump
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