Feedback control of rotary blood pump for preventing left ventricular suction

Jeongeun Son, Dongping Du, Yuncheng Du

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Left ventricular assist devices (LVAD) have been used as a treatment option for end-stage heart failure patients, which can assist an ailing heart to pump blood into human body to meet body's circulatory demand. For long-term use an LVAD as a destination therapy, the device must be able to automatically adjust its pump speed to meet the cardiac demands at different levels of activity without inducing suction. Suction happens when an LVAD seeks to pump out more blood from the left ventricle than the available blood, which can collapse the heart and result in death. In this work, a new control system was developed, which involves two consecutive steps, i.e., the calculation of a pulsatility control index and the adjustment of pump speed to meet the blood flow requirement at different physiological conditions. The control strategy can prevent suction, while maintaining a desired cardiac output. The performance of the feedback controller has been tested with computer simulations, which demonstrates the feasibility and the efficiency of the proposed control algorithm.

Original languageEnglish
Title of host publication2019 American Control Conference, ACC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5426-5431
Number of pages6
ISBN (Electronic)9781538679265
DOIs
StatePublished - Jul 2019
Event2019 American Control Conference, ACC 2019 - Philadelphia, United States
Duration: Jul 10 2019Jul 12 2019

Publication series

NameProceedings of the American Control Conference
Volume2019-July
ISSN (Print)0743-1619

Conference

Conference2019 American Control Conference, ACC 2019
CountryUnited States
CityPhiladelphia
Period07/10/1907/12/19

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