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Bioengineering
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Bioengineering Question 1 : A bioengineer is responsible for the development of useful devices to replace human tissue and bone. Such items include limbs and joints, replacement heart valves, the bionic ear, and artificial hearts. The bioengineer also designs surgical equipment for use during replacement surgery - not only developing the component, but also choosing a material that will not suffer greatly from fatigue, corrode or be rejected by body tissues. Question 2 : Bioengineering timeline beginning of Bioengineering Invention Artificial Artificial Bionic ear Development bioengineering Boomed of plastics hip joint Heart valve fitted of artificial heart \_____________\____________\_________\___________\_________\__________\_________/ / / / / / / 1500 WW1 WW2 1960 1961 1978 1980's 1924 1935 Question 3: How the artificial heart works. AbioCor is the latest totally artificial heart (AH). It is an electro-hydraulic heart with out the need for air hoses pasting from out side the body to the AH. The AH uses a centrifugal pump centrally mounted in hydraulic fluid with this acting on polymer diaphragms. The movement of these diaphragms provides the pumping for the two chambers. The AH is made of plastic and titanium, while power comes from a lithium battery mounted in the torso along with a control unit which regulates operation. This feature separates the AbioCor from previous AHs, and it means the user should be able to lead a normal life. The compressor is now fully contained in the chest, with battery power lasting an hour.
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