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Project Design Constraints - Research Paper Example

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In the paper “Project Design Constraints” the author analyzes two main varieties of prosthetic heart valves, they are the bio prosthetic, and the mechanical heart valves. Mechanical valves are excellent when it comes to durability, however, they tend to coagulate blood flowing in them.  …
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Project Design Constraints
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Project Design Constraints

Download file to see previous pages... Given the design requirements of flow chambers of the heart, the material chosen for the design of the heart flow chambers has to meet a load of requirements. For instance, alumina as a biomaterial, has to sustain high fluid resistance. Additionally, it has to be economical, and avoid stiffening. The material also has to have good thermal conductivity. The fact that the human body happens to be one of the greatest corrosive surroundings for foreign materials means that the material used to make the flow chambers have to be able to sustain the corrosion from the active enzymes, at the human body temperature. Additionally, caution has to be reserved to guarantee that the material used is not poisonous to the human body. A composite design is proposed; in which the porous synthetic grafts are improved in terms of biocompatibility. Polyester textile can be coated using cross-linked protein. Studies of different kinds of proteins such as collagen, gelatin, elastin, and albumin have been conducted. There is no ideal material yet, to use in making of prosthetic heart valves. This is because the different available materials like titanium, or stainless steel, polyester, alumina, or pyrolitic carbon have faults in one way or another. When each one of them is used by itself, the patient has to go through long anticoagulant therapy. An example of a design that can be used is the asymmetric design of the natural human heart coined by Gianni Pedrizetti and Vukicevic of Trieste University. ...Download file to see next pagesRead More
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