Control system architecture for mechanical cardiac assist devices

Paden, B.; Ghosh, Jayati; Antaki, James

doi:10.1109/acc.2000.879215

Cited by 7 publications

(2 citation statements)

References 1 publication

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…RBPs have been developed since the 1980s and have become more and more popular because of its small size, low cost, and potentially long working life. Those pumps have been used successfully for short term (less than 2 years typically) as a bridge to heart transplant (Paden et al 2000) at a constant pump speed. The long-term use of rotary blood pumps is expected to benefit end-stage CHF patients to a greater level, as a destination therapy or bridge-to-recovery device.…”

Section: Introductionmentioning

confidence: 99%

Effects of Muscle Pump on Rotary Blood Pumps in Dynamic Exercise: A Computer Simulation Study

Lim

2008

Cardiovasc Eng

View full text Add to dashboard Cite

Computer simulation is an important tool to study the interaction between rotary blood pumps (RBPs) and human circulatory system. This interaction is critical for the development of reliable physiological control systems of long-term RBPs. This paper presents a numerical model of the human circulatory system, which innovatively takes the muscle pump into account in dynamic exercise. Simulation results demonstrate that the inclusion of muscle pump will change the response of hemodynamic variables and RBP parameters. These findings also show the necessity to verify the performance of RBPs and their physiological control systems in dynamic exercise with the muscle pump taken into account. By using Matlab Simulink software to simulate real-time circulatory properties, this study provides the bench-top test environment for long-term RBPs and their physiological controller.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Muscle Pump on Rotary Blood Pumps in Dynamic Exercise: A Computer Simulation Study

Lim

2008

Cardiovasc Eng

View full text Add to dashboard Cite

show abstract

“…Currently, AHPs have been used successfully for short term (less than 2 years) as a bridge to heart transplant [3] with a constant pump speed. The long-term use of AHPs is expected to benefit end-stage CHF patients much more, especially those who are not eligible for a transplant.…”

Section: Introductionmentioning

confidence: 99%

Modeling, estimation and control of cardiovascular systems with a left ventricular assist device

Allaire

Tao

et al.

Proceedings of the 2005, American Control Conference, 2005.

View full text Add to dashboard Cite

In this paper, a dynamic model is developed through theoretical analysis and numerical solutions to approximate the response of human cardiovascular circulatory system. This system model has one critical time-varying parameter, the resistance of blood vessels. An parameter estimation scheme is derived to estimate this parameter, and the parameter estimate is used to implement an adaptive observer to estimate the aortic pressure for physiologic control. An optimal adaptive controller is proposed to control the estimated aortic pressure to track a reference signal updated by a nonlinear function of the pump head to meet the physiologic need. A Matlab simulation model and an experimental mock human circulatory loop are employed as test environments for human cardiovascular circulatory systems with a left ventricular assist device and their physiologic controllers. Different physiologic conditions, such as the variation of left ventricular failures, variation of activities, and left ventricular suction, are evaluated to test the designed physiologic control system. Simulation and experimental results consistently show that the aortic pressure estimation error is small, and that the abnormal hemodynamic variables of a congestive heart failure patient are restored back to the normal physiologic range.

show abstract