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Design and Testing of a Complete Heart Soft Robotic Compression Device


Design and Testing of a Complete Heart Soft Robotic Compression Device

Abrishami Movahhed, Arezoo (2023) Design and Testing of a Complete Heart Soft Robotic Compression Device. Masters thesis, Concordia University.

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Current strategies for cardiac contraction compensation show the potential of soft robotic sleeves as an alternative for cardiac assist devices. Development, testing, and validation of new implantable medical devices always require experiments for approval. The need for clinical trials or in vivo tests can be minimized by proposing a new beating heart phantom. The rationale behind this study is the design and fabrication of a soft robotic cardiac compression device, simulation of the heartbeat in a silicone heart phantom, and flow measurement in an aorta model. Here, we create a silicone heart and an aorta phantom based on the MRI data by brushing silicone on their 3D-printed molds. Discovering the best commercially available actuator components is one of the objectives of this work, wherein the most effective combination of the tube and the expandable sleeve is provided in detail. The main parameter for evaluation of cardiac function is fractional shortening, which is higher than 25% in a healthy heart, therefore, we used that as the reference for choosing the best possible actuator elements. Three surgical valves and one lifelike valve are placed in the heart model to mimic realistic flow conditions. Both normal and cardiomyopathy conditions are modeled, and an aortic flow assessment is performed. After optimization of the setup, the direct flow assessment of the aorta represents the peak aortic flow of
20.42 l/min. A stroke volume of more than 65 ml, a cardiac output of 4.05 l/min, and an ejection fraction of 50% can be generated with this model. While, in cardiomyopathy simulation, the missing contraction at the specific regions results in a reduction in aortic flow, ejection fraction, and cardiac output.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering
Item Type:Thesis (Masters)
Authors:Abrishami Movahhed, Arezoo
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical Engineering
Date:8 May 2023
Thesis Supervisor(s):Kadem, Lyes and Rivaz, Hassan
Keywords:Cardiac device, soft robot, cardiac flow, fractional shortening, heart failure, 3D-printing, silicone phantom
ID Code:992364
Deposited By: Arezoo Abrishami Movahhed
Deposited On:17 Nov 2023 14:26
Last Modified:17 Nov 2023 14:26


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